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Oxides of rare earth elements

Mat. Res.  vol.15 número4

Mat. Res. vol.15 número4

... radii of rare earth ...composition of Sr, say x = 0.28 in case of La 1-x Sr x MnO 3 and Pr 1-x Sr x MnO 3 perovskites, the replacement of the rare earth element, ...

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Use of rare earth oxides as tracers to identify sediment source areas for agricultural hillslopes

Use of rare earth oxides as tracers to identify sediment source areas for agricultural hillslopes

... targeting of in-field mitigation ap- proaches to reduce diffuse pollution from agricultural ...application of rare earth ele- ment oxides to arable soils at hillslope scale in order to ...

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Rev. Esc. Minas  vol.62 número1

Rev. Esc. Minas vol.62 número1

... and rare earth elements to reveal the origin of classical iron formations (IFs) around the world, such as in the Algoma district and Lake superior region in Canada (Animikie IF) (Gross and ...

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Evaluation of rare earth oxides doping SnO2.(Co1/4,Mn3/4)O-based varistor system

Evaluation of rare earth oxides doping SnO2.(Co1/4,Mn3/4)O-based varistor system

... homogeneity of grains concerning amounts of tin, tantalum, cobalt and manganese elements, similarly to what was observed to S2C7MT and S2C7MTN ...amount of precipitates at triple points ...

5

Mat. Res.  vol.12 número2

Mat. Res. vol.12 número2

... two rare earth oxides are used simultaneously, the final density results require careful analysis as these mixtures (SN-Y/ La, SN-Y/Yb and SN-Nd/Dy) contain a lesser amount of alumina compared ...

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Quím. Nova  vol.26 número6

Quím. Nova vol.26 número6

... aspects of the theory of 4f–4f transition intensities applied to vitreous materials have been discussed ...characteristics of the intra-atomic rare earth free ion and ligand field ...

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Quím. Nova  vol.21 número3

Quím. Nova vol.21 número3

... efficiency of rare earth in sol-gel host materials is compromised due to the tendency of rare earth ions to form clusters and by the presence of hydroxyl ions and remnant ...

4

Mat. Res.  vol.19 número5

Mat. Res. vol.19 número5

... that the Gd(OH) 3 compound presents the most intense PL emission (Fig 4b). This efect can be attributed to defects that cause structural disorder yielding intermediate levels in the band gap, which is essential for the ...

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Chemical modification of the surface of alumina with alkaline earth metal oxides using the polymeric precursor method for catalysis application

Chemical modification of the surface of alumina with alkaline earth metal oxides using the polymeric precursor method for catalysis application

... properties of the samples analyzed by nitrogen adsorption-desorption ...characteristic of mesoporous structures (2-50 ...diameters of the samples, which were kept at around 9 ...modification ...

6

Mat. Res.  vol.17 número1

Mat. Res. vol.17 número1

... consisting of a mixture of rare earth ...function of temperature. The results of both compositions revealed a higher density and free of cracks ceramic body, compared to ...

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LIQUID PHASE SYNTHESIS METHODOLOGIES FOR THE OBTAINMENT OF RARE EARTH-BASED INORGANIC NANOMATERIALS.

LIQUID PHASE SYNTHESIS METHODOLOGIES FOR THE OBTAINMENT OF RARE EARTH-BASED INORGANIC NANOMATERIALS.

... OBTAINMENT OF RARE EARTH-BASED INORGANIC ...preparation of nanosized inorganic solids due to several advantages over other methodologies, such as low energy consumption, safety, possibility ...

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J. Braz. Chem. Soc.  vol.28 número12

J. Braz. Chem. Soc. vol.28 número12

... TGA curves for other coordination compounds are shown in Figures S4 and S5 in the SI section. For the complex (3), TGA curve shows a weight loss around 5% in the same temperature interval that is attributed to the ...

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Contribuition to the study of an alternative methodology for the obtention of rare earth oxysufides.

Contribuition to the study of an alternative methodology for the obtention of rare earth oxysufides.

... Entre 790 – 950 o C ocorre a decomposição térmica numa etapa rápida de perda de massa não apresentando ao término do evento nenhum pata- mar indicativo da formação de um intermediário te[r] ...

4

Photoluminescence studies in rare earth ions coordinated by a carbazolic derivative.

Photoluminescence studies in rare earth ions coordinated by a carbazolic derivative.

... Para o complexo de Gd 3+ , as curvas de intensidade de emissão do ligante em função do tempo foram ajustadas a decaimentos biexponenciais, indicando que o Gd 3+ pode estar [r] ...

6

Obtenção de samário presente em uma mistura de elementos terras-raras pesados a partir da técnica de extração por solventes / Obtaining samarium in a mixture of heavy-rare earth elements from solvent extraction technique

Obtenção de samário presente em uma mistura de elementos terras-raras pesados a partir da técnica de extração por solventes / Obtaining samarium in a mixture of heavy-rare earth elements from solvent extraction technique

... separation of rare earth elements (REEs) in the industry is accomplished mainly by the solvent extraction (SX) ...types of extractants are the organophosphoric acids which have cation ...

11

Optical characterization of europium-doped indium hydroxide nanocubes obtained by Microwave-Assisted Hydrothermal method

Optical characterization of europium-doped indium hydroxide nanocubes obtained by Microwave-Assisted Hydrothermal method

... one of the most studied among rare earth ions by luminescence spectroscopy due to the simplicity of its spectra and wide application as red phosphor in color TV ...variety of materials ...

7

Recovery and separation of rare Earth elements using salmon milt.

Recovery and separation of rare Earth elements using salmon milt.

... separation of REEs through column method, where the binding site of REEs is the phosphate within the DNA ...affinity of REEs for phosphate has also been found in adsorption studies of REEs on ...

15

Braz. j. .  vol.83 número1

Braz. j. . vol.83 número1

... A 3440 g white female newborn was born by spontaneous vaginal delivery at 39 weeks gestation of a 20 year-old G2P1A1 female, following a normal pregnancy. Immediately at birth, she had respiratory distress and ...

2

Surface-plasmon-enhanced frequency upconversion in Pr(3+) doped tellurium-oxide glasses containing silver nanoparticles

Surface-plasmon-enhanced frequency upconversion in Pr(3+) doped tellurium-oxide glasses containing silver nanoparticles

... a Nd:YAG 共yttrium aluminum garnet兲 laser was used. The excitation beam was focused onto the sample with a 5 cm focal length lens, and the fluorescence was collected in a direction perpendicular to the incident beam; the ...

5

Matéria (Rio J.)  vol.19 número4

Matéria (Rio J.) vol.19 número4

... The rare earth luminous fiber has been increasingly used as functional fibers for technical textiles such as decorations, protections and medical textiles ...The rare earth ions such as Sm ...

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