The magnetic energy stored in the conduction electrons is released as the spin-motive force. The non-conservative force acting on the spins of conduction electrons causes the work, which gives rise to the spin-motive force [2].
22 August Monday
Spintronics and Magnetotransport”
ANOMALOUS HALL EFFECT AND SPIN CURRENT GENERATION IN 2D SYSTEMS WITH RANDOM RASHBA COUPLING
SPIN-TORQUE VORTEX NANO OSCILLATORS: FROM FUNDAMENTALS TO APPLICATIONS
TEMPERATURE AND FIELD DEPENDENT ELECTRONIC STRUCTURE AND MAGNETIC PROPERTIES OF LaCoO 3
SPIN WAVES AND SPIN CURRENTS IN MAGNETIC NANOSYSTEMS
This mechanism causes angular momentum transfer from the lattice to the magnetic subsystem and increases the spin current. We show that the three-magnon splitting in a magnetic insulator, due to angular momentum transfer from the lattice, enhances spin current emission at the YIG/Pt interface.
STARK EFFECT IN SPIN SYSTEM OF COHERENTLY COUPLED QUANTUM DOTS
The effects of the electric field on the spin system are shown to be anisotropic and include both a linear and a non-linear part. It is clear that one can observe the Pauli spin blockade in spin-dependent transport when the system is switched from the singlet to the triplet state.
GIANT MAGNETORESISTANCE THROUGH A SINGLE MOLECULE
The results are supported by studies of the Heisenberg Hamiltonian with effective exchange couplings Jij between the spins, which are derived from the Hubbard model by a canonical transformation. Our ab initio electron transport calculations identify strong spin-dependent hybridization of the lowest unoccupied molecular orbital (LUMO) and electrode orbitals as the cause of the large magnetoresistance.
INTERACTION BETWEEN CONDUCTION π-ELECTRONS AND LOCALIZED d-SPINS IN MAGNETIC ORGANIC CONDUCTORS
In triclinic and monoclinic FeIII salts, charge fluctuations are strong even at room temperature and increase upon cooling. It is commonly assumed that in BEDT-TTF salts, charge ordering is induced by long-range Coulomb interactions between charge carriers within the organic layers.
Magnetism of Nanostructures”
PERPENDICULAR MAGNETIC RECORDING AND ITS FUTURE EXTENSION
TAILORING MAGNETIC RELAXATION CHANNELS AT THE NANOSCALE
ELECTRONIC CONFIGURATION AND MAGNETISM OF ATOMIC-SCALE STRUCTURES
MAGNETIC CLUSTERS AND NANOPARTICLES: TAKING AN INTEGRATING CROSS-DISCIPLINARY APPROACH ON MULTIPLE
FRONTS
TAILORING THE PROPERTIES OF MAGNETIC NANODOTS
MAGNETORESISTANCE BEHAVIOUR IN NANOCRYSTALLINE NiFe THIN-FILMS AND NANOWIRES
A detailed study of the magnetic field-dependent resistivity behavior was made for permalloy thin films (nominal composition Ni80Fe20) as a function of film thickness up to 3 nm. The resistivity of the films increases as the film thickness decreases, as expected due to surface scattering.
UNCOMPENSATED MOMENTS IN ANTIFERROMAGNETS AND INTRINSIC EXCHANGE BIAS
HARD MAGNETIC FeCuPt NANOPARTICLES FROM THE GAS PHASE
Non-collinear and Spiral Structures”
THE HEAT CAPACITY AND THE ENTROPY LOST IN THE HELICAL MAGNET MnSi
SPIRAL SPIN STRUCTURE IN MONOSILICIDES OF TRANSITION METALS
CHIRAL MAGNETIC NANOSTRUCTURES
FUNCTIONAL-INTEGRAL APPROACH TO THE INVESTIGATION OF THE SPIN-SPIRAL MAGNETIC ORDER AND PHASE SEPARATION
The figure shows the variation of the phase diagram with temperature near half-filling (T is the temperature in units of the jump integral, AF is for antiferromagnetic, SS is the incommensurate spin spiral wave). The behavior of PS (antiferromagnetic and incommensurate magnetic states) can be related to the explanation of some properties observed in the La2−pSrpCuO4 monolayer compound.
Magnetic Oxides”
STEPWISE MOTT TRANSITION IN COMPLEX OXIDES
SPIN-CHARGE-ORBITAL INSTABILITIES IN TRANSITION-METAL COMPOUNDS WITH SMALL CHARGE-TRANSFER ENERGY
In the present talk, I would like to discuss spin-charge-orbital instabilities in such small ∆ transition metal compounds, including BiCoO3, CaCu3Co4O12 (perovskite and its relatives), NiGa2S4, IrTe2 (triangular lattice), and Ta2NiSe5 using photoemission experiments and model calculations . In CaCu3Co4O12 and Ta2NiSe5, the small size of ∆ stabilizes the unusual valence states of both transition metal sites and gives rise to interesting ground states [5,6].
THE EFFECTS OF NON-MAGNETIC DOPING AND EXTERNAL PRESSURE UPON ORBITAL AND MAGNETIC STRUCTURES OF
A systematic study of the photoemission of transition metal compounds revealed that some high-valence transition metal oxides (such as CaFeO3, PrNiO3, and NaCuO2) are characterized by very small (or even negative) charge transfer energy ∆ and have electronic strange and interesting. the structures. In contrast to the description of the superexchange spin-charge-orbital instabilities, the electronic states of NiGa2S4 and IrTe2 can be analyzed on the basis of models of itinerant electrons taking into account the excitonic effect, the Jahn-Teller band effect and the Peierls transition [3,4] .
LANTHANUM MANGANITE
EFFECTS OF NON-MAGNETIC DOPING AND EXTERNAL PRESSURE ON ORBITAL AND MAGNETIC STRUCTURES. Doping of non-magnetic ions leads to a weakening of the magnetic interactions within the A-type antiferromagnetic structure.
ABOUT CORRESPONDENCE BETWEEN LATTICE DISTORTIONS AND ORBITAL STRUCTURE ON THE EXAMPLE OF CE PHASE OF
The investigation of this compound at a Ga-doping factor above 0.35 is inconsistent with our model. The magnetic structure can be described for pure manganite under external pressure less than 10 GPa and for Ga-doped manganite with a doping level less than 0.35.
MANGANITES
We found that at room temperature static to dynamic Jahn-Teller effect transition occurs at Ga doping factor near 0.35. WHETHER THE CORRESPONDENCE BETWEEN GASTRES CONVERSIONS AND ORBITAL STRUCTURE FOR THE EXAMPLE OF THE CE PHASE OF.
INFRARED SPECTRA OF CuO AND Cu 2 O NANOCERAMICS
At the same time, the available data on the orbital structure that determines the spatial distribution of the valence electrons appear to be quite controversial. Analyzing the relationship between the orbital structure and the corresponding lattice distortions in La0.5Sr1.5MnO4, we have shown that the orbital occupancy in this compound differs significantly from that suggested by JT distortions [1].
MAGNETOREFRACTIVE EFFECT IN MANGANITES AT VISIBLE WAVELENGTHS
Although the obtained MRE size at visible is less than that in the infrared region, but it exceeds a level of traditional linear magneto-optical effects in this region. By analyzing the obtained data for structural, magnetic, magnetotransport, optical and magneto-optical data, we came to the conclusion that MRE at visible is determined by the influence of magnetic field on electronic structure of manganites.
Theory”
SPIN-PLASMONS IN TOPOLOGICAL INSULATORS
PHASE SEPARATION INSTABILITIES, COHERENT PAIRING AND CONDENSATION IN HUBBARD NANOCLUSTERS
The similarities and differences between the pairing mechanism of electron spin and the degrees of freedom of charge in the attractive and repulsive electrons are also discussed. Yang, Spin and charge pairing instabilities in nanoclusters and nanomaterials, in Scanning probe microscopy in nanoscience and nanotechnology;.
ELECTRONIC AND MAGNETIC PROPERTIES OF SEMICONDUCTING NANOCLUSTERS AND LARGE ORGANIC MOLECULES: FEATURES
Separate condensation of electron charge and spin degrees provides a new route to superconductivity in inhomogeneous HTSC systems, different from the BCS pairing scenario. The calculated exact phase diagrams at half-fill and for one hole off half-fill resemble a number of inhomogeneous, coherent and incoherent nanoscale phases seen by the scanning tunneling measurements in parent and doped high Tc cuprates, manganites and CMR nanomaterials [2].
INTERESTING FOR SPINTRONICS
Again, DFT underestimates the value of exchange splitting by a factor of 5 to 10: such a method does not provide the adequate description of spin effects in nanoclusters and molecules. The exchange splitting introduces important spin effects into cluster properties, in particular spin-dependent transport through a cluster and the optical orientation of a cluster spin.
FERROMAGNETISM, SPIRAL MAGNETIC STRUCTURES AND PHASE SEPARATION IN THE HUBBURD MODEL
Our calculations also showed that spin effects caused by a single dopant or an added electron remain quite observable even in clusters and molecules with a diameter of 3-5 nm. It is shown that the ferromagnetic state at half filling (n = 1) is characterized by a spin-wave type instability, while at half filling the instability of one electron (spin polaron) occurs.
STRENGTH OF COULOMB CORRELATIONS IN PNICTIDE SUPERCONDUCTORS
SPIN-EXCITATION SPECTRUM IN CUPRATE SUPERCONDUCTORS
GENERALIZATION OF MERMIN - WAGNER THEOREM AND THE POSSIBILITY OF LONG-RANGE ORDER FOR THE ONE-DIMENSIONAL
HEISENBERG MODEL
GENERALIZATION OF THE MERMIN - WAGNER THEOREM AND THE POSSIBILITY OF LONG-COVERING ORDER FOR THE ONE-DIMENSIONAL. This model introduces an additional parameter and differs from Kac's second model in the important aspect: it allows to arrange magnetic sites not strongly periodically, but in increasing geometric progression distances, what relates our approach to the magnetic "networks" rather than for ordinary "grids".
Magnetic Soft Matter”
HEAT DISSIPATION AND MAGNETIC PROPERTIES OF MAGNETIC NANOPARTICLES FOR BIOMEDICAL APPLICATIONS
OPTIMAL NANOPARTICLES FOR MAGNETIC HYPERTHERMIA : THEORETICAL AND EXPERIMENTAL RESULTS
THERMAL EFFECTS IN MAGNETIC NANOPARTICLES UNDER OSCILLATING FIELDS
Magnetism in Biology and Medicine”
TMR DETECTION OF ENDOGENOUS MAGNETIC NANOPARTICLES
MAGNETIC NANOPARTICLES FOR IMMUNOCROMATOGRAPHIC SENSORS
CELL RESPONSES TO PULSE MAGNETIC STIMULATION
MAGNETIC PROPERTIES OF MAGNETOFERRITIN
CARBOXYLATED MAGNETIC NANOPARTICLES AS MRI CONTRAST AGENTS. RELAXATION MEASUREMENTS AT DIFFERENT FIELD
STRENGTHS
Magnetophotonics”
CYCLOTRON RESONANCES AND FARADAY ROTATION IN GRAPHENE IN THE THz RANGE
MAGNETO-OPTICAL HARMONISC GENERATION IN SEMICONDUCTORS
Traditionally, light is used in such devices to change the strength of the magnetic interaction. An example of the magnetic domain created using such a photocoercivity effect (together with a CCD image of the focused laser beam) is shown in the figure.
ULTRAFAST LASER-INDUCED SPIN DYNAMICS IN RARE-EARTH ORTHOFERRITES WITH TAILORED MAGNETIC PROPERTIES
ELECTRONIC TRANSITIONS AND GENUINE CRYSTAL FIELD PARAMETERS IN COPPER METABORATE CuB 2 O 4
MAGNETOELECTRIC EFFECTS STUDIED BY X-RAY
GIGANTIC TERAHERTZ MAGNETOELECTRIC EFFECT VIA ELECTROMAGNONS IN MULTIFERROICS
66. intensity with and without magnetic field) with fine control of spin structures according to the conical angle θ from true screw (θ=0°) to ferrimagnetic (θ=90°) through conical spin-ordered phases (0°< θ<90°) [3]. It was found that the sign of the relative change is odd with respect to the direction of polarization and magnetization, which is direct evidence for the formation of non-reciprocal directional dichroism in this compound.
SOLITARY DEFLECTION WAVES ON THE SUPERSONIC DOMAIN WALL OF YTTRIUM ORTHOFERRITE
The positions of the maxima in the u(v) curves shift to higher velocity with increasing antiferromagnetic topological charges. These results confirm the gyroscopic origin of the AFM vortex dynamics in the tilted antiferromagnet – yttrium orthoferrite.
SINGLE-SHOT IMAGING OF ULTRAFAST SPIN-REORIENTATION IN RARE-EARTH ORTHOFERRITES
So, in the case of orthoferrites, we observe a new type of dynamics - antiferromagnetodynamics at very high supersonic speeds. It was found that the reorientation process depends on the sample temperature and the pump flow.
MAGNETO-SPECTROSCOPY STUDIES OF GRAPHITE NANOPLATELET FILMS
The latter can also lead to an unusual "ring-and-core" magnetization pattern with opposite directions to the magnetization at the pump point. a) Ultrafast reorientation imaging and (b) stroboscopic data of the transient Faraday rotation during the laser-excited spin-reorientation transition in (Sm0.5Pr0.5)FeO3 at T = 90 K. The inset in Fig.1(b) shows that the ultrafast reorientation occurs within less than the first 10 ps.
Magnetism and Superconductivity”
IRON BASED SUPERCONDUCTORS: PNICTIDES VERSUS CHALCOGENIDES
RECENT TOPICS ABOUT TOPOLOGICAL SUPERCONDUCTIVITY
THEORY OF JOSEPHSON TRANSPORT THROUGH FERROMAGNETIC INSULATORS AND SEMICONDUCTORS
SPIN-FERMION COUPLING IN IRON-BASED SUPERCONDUCTORS
This includes discussion of the quasiparticle scattering rate, the superconducting order parameter, as well as the modification of the Fermi surface. We discuss the importance of the coupling between spin fluctuations and electronic excitations for the superconducting mechanism.
INTERFACE EFFECTS AND SPIN CURRENTS IN SUPERCONDUCTOR FERROMAGNET HETEROSTRUCTURES
We use an analysis of theoretically obtained spectral functions, motivated by the procedure used for experimentally obtained spectra, which allows a detailed comparison (see the figure for an example of the application of our theoretical results). For a long time, the boundary conditions for the diffusion equation were available only for spin-degenerate contacts [Zaitsev (1984), Kupryanov and Lukichev (1988), Nazarov (1999)], which represented a serious limitation of the Usadel method's applicability. description of modern structures containing ferromagnetic elements.
DYNAMIC PROPERTIES OF SIFS JOSEPHSON JUNCTIONS
PROXIMITY-EFFECT SUPERCONDUCTING TRIPLET SPIN VALVE
1], however, we have taken into account the long-range triplet component of the superconducting pairing, which can be generated at non-collinear magnetizations of the F layers [2]. We demonstrate that Tc can be a non-monotonic function of the angle α between magnetizations of the two F layers.
PROXIMITY EFFECT IN SFF STRUCTURES
With proper adjustment of the S-layer thickness, the system can be driven into a regime of the re-entrant superconductivity as a function of the angle between magnetizations of the F1 and F2 layers [3,4]. The SFF structures with fully transparent interfaces were theoretically studied in [6], where it was shown that critical temperature in such trilayers can be a nonmonotonic function of the angle α.
SIFS JOSEPHSON JUNCTION: FROM THE CLEAN TO THE DIRTY LIMIT
Spatial variations of the order parameter are described by the complex coherent length in the ferromagnet ξF-1. In this paper, the spatial distribution of the anomalous Green's functions and the Josephson current in the SIFS junction is calculated.
Micromagnetics”
MICROMAGNETIC ANALYSIS OF DOMAIN WALL DYNAMICS AND ITS APPLICATIONS
FERROMAGNETIC RESONANCE MEASUREMENTS AND SIMULATIONS ON PERIODIC HOLE AND DISC ARRAYS
EDGE-SOLITON-MEDIATED VORTEX-CORE REVERSAL DYNAMICS
Intermetallic Compounds”
HIGH-FIELD MAGNETISM AND MAGNETOACOUSTICS IN URANIUM INTERMETALLICS ANTIFERROMAGNETS
MAGNETIC PHASE TRANSITIONS IN LAYERED INTERMETALLIC COMPOUNDS
As in the elastic neutron scattering experiment [3] in NdFeAsO we observe iron spin reorientation first-order phase transition, induced by Nd subsystem at the temperature above TN(Nd) = 6 K. Finally, we discuss the influence of the magnetic R --Fe interaction on the observed enhanced superconductivity in the RFeAsO1-xFx with a magnetic R ion.
High Frequency Properties and
ADDITIONAL EFFECTIVE MEDIUM PARAMETERS FOR COMPOSITE MATERIALS (EXCESS SURFACE CURRENTS)
Soukoulis, “Determination of permittivity and effective permeability of metamaterials from reflection and transmission coefficients,” Phys.
METAMATERIALS PROGRAM IN TIME
TM-WAVE PROPAGATION INTO INHOMOGENEOUS MEDIUM CONSISTING OF 2D ARRAY OF NANOPARTICLE
The most interesting results are obtained for the case when the distance between the cylinders is much smaller than the radius. At the resonance conditions, the electric field is greatly amplified in the gaps between the cylinders and it can be many orders of magnitude greater than the field of the incident wave.
MAGNETIC RESPONSE OF NANOSCALE LEFT-HANDED METAMATERIALS
It is shown that the reflection of TM wave has non-monotonic dependence on the frequency due to excitation of the collective surface plasmon resonances in the metal nanoparticles.
MAGNETO-INDUCTIVE MACH-ZEHNDER INTERFEROMETER
The effect was to reduce the resonant frequency of the elements without significantly changing the coupling (Fig. 1b). The comparison between the transmission through balanced and unbalanced interferometers (Fig. 2a) shows an additional null in the latter due to the destructive interference of magneto-inductive waves propagating in both arms.
METAMATERIALS WITH INTER-ELEMENT COUPLING FOR SUBWAVELENGTH IMAGING
DIMER' AND 'POLYMER' DIATOMIC METAMATERIALS
RELAXATION MÖSSBAUER SPECTROSCOPY OF IRON OXIDES NANOPARTICLES IN SUPERFERRIMAGNETIC REGIME
MICROSTRUCTURE AND MAGNETIC PROPERTIES of FeCo AND L 10
Fe/Pt THIN FILMS FOR ULTRAHIGH-DENSITY MANETIC RECORDING
DOMAIN WALL STRUCTURE OF WEAK FERROMAGNETS ACCORDING TO RAMAN SPECTROSCOPY
FERROMAGNETIC RESONANCE IN PERMALLOY ANTIDOT ARRAYS
PHYSICAL PROPERTIES OF Co/Ge/Co FILMS
The given report is devoted to the study of magnetization mechanisms, namely in multilayer film structures with alternating layers of soft magnetic and hard magnetic materials. It attracts attention that the soft magnetic layer determines the behavior of magnetization of the film structure, which reduces the coercive force of the system.
EPITAXIAL HETEROSTRUCTURES Co/Cu ON Si(111))
THE MICROWAVE MAGNETIC AND STRUCTURAL PROPERTIES OF COMPOSITE AND MULTILAYER FILMS
BIAS-CURRENT AND OPTICALLY DRIVEN TRANSPORT PROPERTIES OF THE HYBRID Fe/SiO 2 /p-Si STRUCTURES
INFLUENCE OF TEMPERATURE ANNEALING ON FMR AND STRUCTURAL PROPERTIES OF SINGLE-LAYER AND MULTILAYER
NANOCOMPOSITE FILMS
CONCENTRATION AND ANGULAR DEPENDENCE OF FMR IN SINGLE AND MULTILAYER (Co-Ta-Nb)x-(SiO2)y FILMS.
MAGNETIC PROPERTIES OF ONE AND TWO DIMENSIONAL NANODOTS ARRAYS
CHARACTERISTICS OF THE PERIODIC FINE STRUCTURE IN DOMAIN WALLS IN VACUUM-DEPOSITED FILMS
INTERPARTICLE MAGNETIC INTERACTION IN THE CLOSE-PACKED SYSTEMS OF HIGHANISOTROPIC NANOCRYSTALS
SIZE AND SHAPE INFLUENCE ON MAGNETIZATION REVERSAL OF Py NANOFILM GROWN ON NIOBIUM
MAGNETORESISTANCE EFFECT
MAGNETIC BEHAVIOR AND MAGNETORESISTANCE OF NANOSIZED SUPERLATTICES Mo/Fe/Co
FERROMAGNETIC BEHAVIOR OF Pt NANOPARTICLES
2 Resistance and magnetoresistance dependences of (Сu+Co41Fe39B20)X (CuOn)100- X composites of the fraction of amorphous metal phase Co41Fe39B20 (X, at.%). The effect of the compound quantity on the negative and positive magnetoresistance is shown in Figure 2.
MAGNETIC AND MAGNETOELASTIC PROPETIES OF A BULK NANOSTRUCTURED Nd-Fe-B TYPE ALLOY MANUFACTURED BY
SPARK PLASMA SINTERING METHOD
MAGNETIC ORDERING IN HETEROGENEOUS MULTILAYER NANOSTRUCTURES SUPERPARAMAGNETIC COMPOSITE -
SEMICONDUCTOR
INFLUENCE OF THE LAYER PARAMETERS ON MAGNETIC
MAGNETIC PROPERTIES OF GOETHITE NANOPARTICLES SYNTHESIZED WITH ADDITION OF VARIOUS SURFACE ACTIVE
SUBSTANCES
INVESTIGATION OF PHASE TRANSITIONS OF MODEL Fe/V SUPERLATTICES
Peculiarity of FERROMAGNETIC AND SPIN WAVE RESONANCE IN EXCHANGE COUPLED NiFe/X/NiFe THREE LAYERS RESONANCE IN EXCHANGE COUPLED NiFe/X/NiFe THREE LAYERS. The influence of the sign of the exchange coupling strength on the field positions, both for acoustic modes and for their optical satellites, was determined by the SWR technique.
PECULIARITIES OF MAGNETIC INTERACTIONS AND STABILITY OF xFe(100-x)SiO 2 (x=5-95) POWDER NANOCOMPOSITES
OBSERVATION OF BAND GAPS IN ONE-DIMENSIONAL MAGNONIC CRYSTAL BY SPIN-WAVE RESONANCE TECHNIQUE
Potential graphs and SEM images, the drop in surface potential corresponds to the onset of nickel formation at the sample surface. Thus, the time of complete pore filling with nickel could be controlled by the surface potential of the sample.
MAGNETIC PROPERTIES OF AMORPHOUS AND MONOCRYSTALLINE COBALT NANOLAYERS
EMBEDDED IN CARBON
THE MAGNETIC-RESONANCE PROPERTIES STUDY OF NANOSTRUCTURES FOR SPINTRONICS BY FMR
SURFACE SPIN FLOP TRANSITION IN [Fe/Cr] MULTILAYERS OBSERVED BY THE NUCLEAR RESONANCE REFLECTIVITY
MAGNETOOPTICAL STUDIES OF INTERLAYER COUPLING IN Fe/Si/Fe TRI-LAYERS
THE INFLUENCE OF HEAT TREATMENT ON MAGNETIC PROPERTIES OF Tb-Co FILM AND Tb-Co/Fe19Ni81 DOUBLE.
SPIN REORIENTATION TRANSITION AND INTERGRAIN EXCHANGE INTERACTION IN NANOSTRUCTURED Nd-Fe-B-TYPE ALLOYS
A PRESSURE INFLUENCE ON MAGNETIC PROPERTIES OF Nd-Fe-B TYPE NANOSTUCTURAL ALLOYS
CARBON NANOTUBE AS A SENSOR FOR SINGLE PARTICLE MAGNETIC RESONANCE DETECTION
HEAT TREATMENT INFLUENCE ON MAGNETIC AND MAGNETOTRANSPORT PROPERTIES OF Fe x (MgO) 100-x
NANOCOMPOSITES
ELECTRICAL AND MAGNETIC PROPERTIES OF NEW MULTILAYER HETEROGENEOUS STRUCTURES BASED ON COMPOSITES
The materials are produced by special heat treatment of disordered nanocrystalline alloys originally synthesized by mechanochemistry. The addition of Boron transforms the magnetic state of the initial Fe65Al35 alloy into a ferromagnetic one exhibiting a high Curie temperature, saturation magnetization and average values of 57Fe hyperfine magnetic files (as seen in the figure).
MAGNETIC PROPERTIES AND SPATIAL ORDERING OF FERROMAGNETIC NANOWIRES IN ARRAYS
FERROMAGNETIC Co(P) POWDERS WITH NANODIAMOND AND CORUNDUM PRECIPITATES
EXCHANGE BIAS INDUCED IN POLYCRYSTALLINE Co/FeMn- STRUCTURES BY MAGNETIC FIELD COOLING
MAGNETOOPTICAL KERR EFFECT ENHANCEMENT IN Co-Ti-O NANOCOMPOSITE FILMS
THE EMERGING OF GIANT MAGNETIC ANISOTROPY IN Au-Co NANOWIRES
TEMPERATURE DEPENDENCE OF INTERLAYER COUPLING IN Fe/Si/Fe TRILAYERS
PASSAGE OF Fe/Cr/Fe THREE LAYER FILM MAGNETIZATION CURVE BEYOND THE LIMITS OF HYSTERESIS LOOP
INTERFACE STRUCTURE AND MAGNETIC PROPERTIES OF Ni-Ge FILMS
MAGNETO-OPTICAL PROPERTIES OF PERIODIC DOMAIN STRUCTURE IN MAGNETIC FIELD
THE COERCIVITY AND INTERLAYER EXCHANGE IN THREE-LAYER FILMS PREPARED BY CHEMICAL DEPOSITION
NEW MODEL FOR MAGNETISM IN ULTRATHIN FCC FE ON CU(001)
MAGNETIC RESONANCE STUDIES OF SOME CRYSTALLINE CuCr2S4 SPINE LAYERS IN HETEROSTRUCTURE BASED ON CuCrS2 CuCr2S4 SPINE LAYERS IN HETEROSTRUCTURE BASED ON CuCrS2.
SINGLE CRYSTAL
PARENT COMPOUND
T = 2 KFig. 1
ELECTRON SPIN RESONANCE STUDY OF VANADIUM OXIDE AEROGELS
MECHANISM OF GROWTH AND MAGNETISM OF EPITAXIAL Co(111) FILMS ON ATOMIC FLAT AND VICINAL Si(111)7x7
We investigated nucleation and movement of domain walls in ultrathin Co/Pt/Co structures with variable Pt spacer thickness in the perpendicular magnetic field. In the region of bounded motion of domain walls, a rapid increase in velocity is observed with the growth of spacer thickness.
HIGH-COERCIVE FERROMAGNETIC STATE INDUCED BY A MAGNETIC FIELD IN THE ANTIFERROMAGNETIC LAYERED COMPOUND Fe 0.5 TiS 2
PYROBORATE
INFLUENCE OF METAL-DIELECTRIC NANOCOMPOSITES
MORPHOLOGY ON ANOMALOUS MAGNETOTRANSPORT PROPERTIES
FUNDAMENTAL STUDY OF COLLIMATED SPUTTERING FOR MAGNETIC RECORDING MEDIA WITH INCLINED ANISOTROPY
MAGNETIC RELAXATION OF WEAKLY INTERACTING MAGNETIC NANOPARTICLES
DEPENDENCE OF MAGNETIC NANOPARTICLES PROPERTIES ON THE MORPHOLOGY AND ENVIRONMENT
Ferrimagnetism is usually associated with the presence of several different magnetic ions in the structure of the compound. The antiferromagnetic (AFM) exchange Cr3+- O - Cr3+ at the domain boundaries completely compensates the contribution of the FM domain to the total magnetization, because almost all (97.6%) of the Cr3+ ions, participating in the.
TEMPATURE INFLUENCE ON KINETICS OF MAGNETIZATION REVERSAL OF LSMO THIN FILM
MÖSSBAUER SIAGNOSTIC
BULK-SAMPLES AND FILMS ON Si
Absorption increases in the region above 3000 cm-1, which is the result of d-d transitions in the Co3+ ion. The R3+ energy level scheme was obtained and used to interpret the magnetic properties of RCoO3.
SPIN STATES AND MAGNETIC INTERACTIONS IN ISOTOPE SUBSTITUTED (Pr,Eu) 0.7 Ca 0.3 CoO 3
At higher temperatures, we observe a first-order spin-state transition from the LS to the IS state of Co3+, which is accompanied by a decrease in the electrical resistivity, an increase in the magnetization, and a strong lattice broadening. On the other hand, the main effect of the oxygen isotope substitution is in the change of the effective intersite hop, i.e. of the bandwidth.
175 . the static strain) increases, the Co3+ LS (S = 0) state is stabilized and the magnetic ordering of the Co4+ ions is suppressed to temperatures well below 5 K leading to the insulating ground state and a low-temperature anomaly in Cp. This means that the static distortions due to the change in the mean ion radius of rare earths are somehow equivalent to changes in the lattice dynamics due to the isotope exchange, although the physical mechanisms appear to be different.
SPIN-GLASS STATE IN SmFeTi 2 O 7
The SmFeTi2O7 results of the temperature dependence of the magnetization σ(T) and specific heat CP(T) are shown in Figure. The temperature dependence of the specific heat suggests the absence of magnetic order over long distances.
MAGNETOASCOUSTIC INVESTIGAION OF THE JAHN-TELLER EFFECT IN CHROMIUM DOPED ZnSe CRYSTAL
It has a zinc-blende structure with the tetrahedral arrangement of the Cr2+(d4) ion in the high-spin ground state 5T2(e2t2). Additionally, tunnel saliva [3] should be taken into account for the interpretation of results; this will be done in the near future.
We have proven that ultrasonic measurements can serve as a powerful technique for estimating JTE parameters. The observed anomalies may be due to the transition near the intersection of the energy levels with Ms =0 and Ms =+1.
MANGANITE
It was demonstrated that diamagnetic tin atoms have no effect on the magnetic and structural properties of manganite. The effects of covalency on magnetic interactions such as superexchange in Cu2+-O-Mn4+ and Mn4+-O-Mn4+ bonds and transferred superfine interactions of 119Sn probe atoms in the manganite structure were discussed.
COMPETING INTERACTIONS AND SPIN ORBIT COUPLING IN DOPED RARE-EARTH MANGANITES
The effect of Fe is seen to be consistent with the disruption of the Mn-Mn exchange possibly due to the formation of magnetic clusters. THERMODYNAMIC EFFECTS OF THE SPIN ORDER OF ELECTRONS IN HYBRIDIZED STATES ON THE TRANSITION TIMES.
THERMODYNAMIC EFFECTS OF THE SPIN ORDERING OF ELECTRONS IN HYBRIDIZED STATES ON THE IMPURITIES OF TRANSITION
The maximum magnetoresistance is seen to increase consistently with the addition of Fe, increasing up to 400% for 8% Fe concentration. The formation of ferromagnetic and antiferromagnetic clusters and the competition between them with the introduction of Fe3+ ions, which do not participate in the double exchange (DE) process, have been proposed to explain the low value of magnetization at higher Fe concentration.
ELEMENTS
The variations in the critical temperature Tp, Tc, confinement length, magnetic moment and magnetoresistance show a rapid change at about 4-5% Fe. This work was supported by the Russian Foundation for Basic Research (Grant no.) and by the Program of the Physical Sciences Branch of RAS (Grant no. 09-2-T2-1037) and the Russian-American program BRHE.
OXYGEN ISOTOPE EFFECT IN ORDERED PrBaMn 2 O 6
The applied magnetic field and light oxygen stabilize the FM phase, resulting in a positive isotopic shift of TFM and a negative isotopic shift of TCO.
EFFECT OF ELECTRON IRRADIATION ON THE NON-STOICHIOMETRIC AND DOPED LANTHANUM MANGANITES
The effective magnetic moment of the irradiated samples is greater than µeff of the initial samples. Thus electron irradiation leads to a decrease in TC and conservation of magnetic polarons to higher temperatures.
ORBITAL AND MAGNETIC STRUCTURE INVESTIGATION IN RARE- EARTH MANGANITES
For the considered perovskites, the dependence of the Neel and HF temperature parameters on the type of transition metal ions share the same characteristics from the same dependences of the lattice parameters. Perovskite crystals with different rare earth and transition metal ions have different types of magnetic structures.
SYNTHESIS AND MAGNETIC PROPERTEIS OF Mn 2 GeO 4 SINGLE CRYSTALS
Magnetic interactions (TN dependence) in some orthorhombic perovskites such as RCrO3 and RFeO3 had been investigated early [5]. UNIVERSAL SCALE FOR THE EFFECTS OF Mn-SITE DOPING IN La1/3Ca2/3MnO3 ON THE ORGANIZATION TEMPERATURE OF DRIVES AND.
SUPERSTRUCTURE PARAMETER
The transition from AFM state with insulator conductivity to FM state with conductivity of 'bad' metals (close to Mott's criteria) was found for Ru-doped systems with 7% Ru at Mn sites.
A found ratio MEB/Ms 0.04 is large enough: its value is in good agreement with the results for the related Pr2/3Ca1/3MnO3 compound [2], where nanodroplets with a size of ∼ 10 Å were immersed in the AFM -host. In summary, we have revealed intrinsic exchange coupling in the phase-separated (Nd0.9Y0.1)2/3Ca1/3MnO3 at low temperatures, evidenced by the presence of small FM clusters immersed in the charge-ordered AFM phase.
The obtained data allow to conclude that the phase separation in the Nd2/3Ca1/3MnO3 composition leads to the magnetic behavior of the group glass.
HIDDEN MARKOV MODEL AND THE PROCESSING OF OPTIC AND MAGNETO-OPTIC SPECTRA OF 3d OXIDES
MAGNETIC PROPERTIES OF SOME RARE EARTH OXYHALIDE CRYSTALS
The temperature evolution of the paramagnetic susceptibility for EuOBr was mathematically simulated satisfactorily with the van Vleck model using data for the free ion.
DIVALENT AND TRIVALENT MANGANESE IN A-POSITION OF PEROVSKITE CELL OF SELF-DOPED LANTHANUM MANGANITES
AB INITIO MODELING OF 3d METAL IMPURITIES INFLUENCE ON THE ELECTRONIC AND MAGNETIC PROPERTIES OF ZIRCON
THE INVESTIGATION OF PHASE TRANSITION IN THE THREE- DIMENSIONAL SITE-DILUTED POTTS MODEL
In the present work, elastic properties for RE cobaltites RBaCo4O7 in the range SPT and MPT are investigated. Comparison of elastic properties at SPT is performed for RE cobaltites and RE zircons with cooperative Jahn-Teller effect.
ULTRAFAST PHOTOINDUCED MAGNETIZATION DYNAMICS IN ULTRATHIN Co/GARNET HETEROSTRUCTURES