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Dinâmica ultra-rápida em cds, compostos orgânicos e em filmes finos de NiFe/NiO

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(39)  ¹ :=È Ã :=<½  ½  =93+*+h :=<e µm6ž  Í ÷tÐ  » %Ò :=ÈWF =v F 3+*+%(0W*+&8@~]^8:P;0$$={ ,3`$={ oŽ(%(3+)$8TW_J@J@E~]^%OA:=–&F #s>+%OA:=y]^8@R >+ 3BA: RS>/$3+*+=uJ@LA:8:oAC„*+L-+>+(J@=9Js>+OA:8:$0>+8jA:=9J4r=93+*+E„%(3BA:3+J@%(*/$*+E*+E-+%(0=.oA:%(3+79WK$$(=98@Jz#s>+%OA:= $OA:=9J4n#&J@#&=LRS>/$3+*+=y&3+8@79%!&*+=E-+>+(J@=UzF -PRS>+3/5Tl‰[#ª-+>+(J@=L0=9# Ñ ¦9¦W]^J4P-P=98[”“5#&-+(=+4 s3+8@79%!L*+ Ñ 3LA:#>+#LL-P=$A)1 3+0%!L*+s-+%(0=E*+ Ñ ¦$\B±ésJ@z]^=<0)$(%(')$*+=L-P=98I>+#LL(3BA:z0=9# *+%(JjAo$31 +0%!s]^=<0)$`*+ Ñ ¦G0#™|F -P=9J@J)v F K9p=9i5A:86%(3BA:3+J@%(*/$*+J6*/W=98@*+# *+ Ñ Xl±åšo0# < T ö ¼p¸}ºPâºp»¼Æ À ¾+½ À¿ º"»¤Ä à À ÇÄ HŸ$>5A:=9#&=<*+>+!P;0$$={ &*+s]­$J@U=9F -5A:%(0) ‡ x5žaƒµŽ 2(j3 ) $Q1· *O2(e,m#on03Ò*5z#%7<ˆyGF >+#*+=9Jl]^3=91 #&3+=9J *+0=98@8@3BA:Jq*/E*+-P3+*`1 3+0%!y*+=Qv F 3+*+%(0s*+G8@~]^8:P;0$$={ y0=9#E%(3BA:3+J@%(*/$*+$Tsbd=93+J@%(*+8@GRS>+G>+# -+>+(J@=.0=9#ƒ>+#ƒ-P8j /ž*+E%(3BA:3+J@%(*/$*+Y ß 8‡ ¾ ˆ|-+8@=9-/$7BŽJ@EoA:8:)KŠF Js*+E3S>+#ƒ#&%(=„3`$={ oŽ(%(3+)$8|*+ 0=9#&-+8@%(#&3BA:= ªhTŠHI~F #µ*+|$0>+#s>+!$8M>+#Ls]­$J@Y(%(3+)$8 Ä È)4/G(>+'lAC$#sidF #²A:8/W>F +#Lz]­$J@|3`$={ oŽ (%(3+)$86RS>+qF -+8@=9-P=98@0%(=93/$ &%> (3BA:3+J@%(*/$*+q*+=L-+>+(J@=+T6x<z&*+%(J@-P8@J$={ &-+>+*+J@J@sJ@8I*+J@-+8@')$*/54 G]­$J@lA:=$AC$pJ@8@%!5• Ä Ä È Ã ¶ Ä ® : OÒ ù  ª ®  :=È Ã :=<+ß 8‡ ¾ ˆ  OÒ ù  ª ‡ Ñ T Ñ ¦Bˆ bd=9#&=?=?-+>+(J@=A:#Ú>+#Ú-P8j /z*+"%(3BA:3+J@%(*/$*+RS>+K$$8@%!U3+=?A:#&-P=+4qU]­$J@$4zoA:8:)KŠF Ju*/ x5ža4dAC$#sidF #‘A:8/">F +#L*+-P3+*`1 3+0%!A:#&-P=98:$2T倐J@J@= 0=98@8@J@-P=93+*+Q>+# *+J@(=<0)$#&3BA:= *+Y]^8@R >` 1 3+0%!G*/$*+=&-P=98  Ól‡8¾ ˆ[  Ä ¾ ® :=< OÒ ù  ª! ß 8‡¾ ¾ ˆ ‡ Ñ T Ñ9Ñ ˆ €JjA:=lJ@%(793+%O /0)[RS>+M3+=}K$$Jf]^8@R >` 1 3+0%!$JJ$={ l0 8@%!$*/$Jf3+=lJ@-P0~A: 8@=Y*+=I-+>+(J@=l*+>+8:$3BA:h[-+8@=9-/$7BP;0$$={ +4 8@J@>+OAC$3+*+=IAC$#sidF #£3/l798:P;0$$={ I*+dK$$8@8@*+>+8:I*+d]^8@R >` 1 3+0%!I*+=l-+>+(J@=+TfZ[=l0)$J@=Y*/IJ:o /8:549RS>+ [F #&%(=zV+=9J@-P*+%(8@=s*+=s3+=9J@J@=s!$J@84+q3`$={ oŽ(%(3+)$8@%(*/$*+yIF *+P :=<Š 姏“ Ñ ¦ ¼M0# < š±£T5f$8: Ñ 0# *+YJ:o /8:z0=9#µ>+#Lz% (3BA:3+J@%(*/á $*+l%(3BA:8:$0))K<%(*/$*+I*+|Ò$¦WXl±åšo0# < # §9¦9¦z3+#²*+l0=9#&-+ 8@%(#&3BA:á = *+W=93+*/54`A:8@#&=9J Ó ¹ Ñ × Ý “ Ñ ¦ ÷ g['$4¤RS>+%OK$$(3+*+=,y>+#Ly!$8@79>+8:L*+Wi/$3+*/N*+ ùʹŸ¥ Ö 3+#,T ZIlJ@<0$; $={ Ñ T ×5T ×IK98@#&=9JRS>+6l*+%(J@-P8@J$={ Y*+MK9(=<0%(*/$*+d*+h798@>+-P=lAC$#sidF #w798:IK$$8@8@*+>+8: *+Y]^8@R >` 1 3+0%!+#L$J[$=W0=93BA:8/$8F @%(=G*/Lx5ža4/=&J@-P0~A:8@=&*+=&-+>+(J@=W-P8@#L$3+0|%(3/$OA:8:$*+=+T.

(40) Á™ òÊÉ À Ç ÄS¹y»¤Ä É Ë êOÇ À Ë ¹ À. Áß. ö ¼p¸}º"º ¾9À Æ­Ë # À ¾+½ À¿ º%$'&‰(jR)R¯3Q(j7,m#on(j$p3Q#2-/q%5879)( HI~F #µ*+|=G]^%¨“5YJ@=$]^8@8h>+#LzK$$8@%!P;0$$={ sA:#&-P=98:$c3/GJ@>/G]­$J@$4/=G]­oA:=G*+=,v F 3+*+%(0lJ@86*+-P3<Ž *+3BA:L*/N%(3BA:3+J@%(*/$*+&%(3+*+>+'GAC$#sidF #¢>+#LEK$$8@%!P;0$$={ NJ@-/$0%!$Š*+=N]^%¨“5$TLHµ$OACy%(3BA:3+J@%(*/$*+ 3+=L03BA:8@=L*+=&]^%¨“5|-+8@=}K9=<0)&>+#ª$>+#&3BA:=L3+=„v F 3+*+%(0|*+q8@~]^8:P;0$$={ &J@z0=9#&-/$8:$*+=W0=9#ª&-/$8jA: ”“<A:8@3/s*+=q]^%¨“5$45=9>LJ@‚:54+q-+8/=9F -+8@%!|(>+'I*+=q]^%¨“5I%(3+*+>+'[>+#Ÿ~]^%OA:=qA:%(-P=q(3BA:I3+=s#&%(="=9F -5A:%(0=+4 %(J@J@=&3+=W0)$J@=&*+|·3 <+*–¦5T ZIef%(7+T Ñ T Ý JjAn%F ((>+JjA:8:$*+=Q=]^3=91 #&3+=*/$>5A:=$]^=<0)$(%(')P;0$$={ +T–ZI(%(3+V/QJ/=9F (%(*/54d=93+*+„= ]^%¨“5uF #L$%(JL%(3BA:3+J@=’=<0=98@8@.="]^3=91 #&3+= */’$>5A:=$]^=<0)$(%(')P;0$$={ +4M#L$JE-/$8:">+# ]^%¨“5u-P=9>+0= %(3BA:3+J@=+4<3`$={ zV6q#F &=<*+%O /0)P;0$$={ q3+=Ev F 3+*+%(06*+I8@~]^8:P;0$$={ ·<(=979=|=q]^%¨“5[J@8/`F @$i+J@=98jK<%(*+S= 9-P!l]^3+*/ ‡ (%(3+V/l-P=93BA:%((V/$*/Bˆ”Tf_J@J@[]^3=91 #&3+=|A:#>+#A:#&-P=q*+68@J@-P=9JjAC|%(79>/$/$=q*/Y3`$={ oŽ(%(3+)$8@%(*/$*+ (~A:8=91 3+%(0)54%(JjA:= $F 4Š*/u=98@*+#÷*+ Ñ ¦ WJT"_JjA:,$-/$8:oA:=u-+8@=<*+>+'N>+#÷~]^%OA:=uJ@#&(V/$3BA:N$= #&0)$3+%(J@#&=G*+Y>+# $i+J@=98jK9*+=986J:oA:>+8/oKF 9p8/$-F +%(*+=+TŠ›l>NJ@‚:54n$JMþ/>5A:>/P;0$=9{ J6RS>+YA:%OK98@# #L$%(=98 %(3BA:3+J@%(*/$*+lJ@8$={ G#&3+=9Jh$i+J@=98jK<%(*/$JdRS>+|$JM*+l#&3+=98d%(3BA:3+J@%(*/$*+$45]­)K9=98@03+*+=&z=9-P8:P;0$$={ -+>+(J:$*/5TŠbd=93+J@R >+ 3BA:#&3BA:$45$-6=9F JrKM$8F @%!$JrK9=9OAC$Jr3/Y0))K<%(*/$*+$4S=9i5A:#GŽJ@M>+#A:8@#*+h-+>+(J@=9JT Fenda. n2. Bastão do laser. fe %(79>+8: Ñ T Ý •–_J@RS>+#L*+=A:8:)K$$#&3BA:=*+#&=<*+=9JyK<%!$>5A:=$]^=<0)$(%(')P;0$$={ ‡ &‰(jR)R3Q(j7i,m#on(j$ 3Q#2-/q%5879}ˆ”TIH(%(3+V/&J/=9F (%(*/&%((>+JjA:8:W=ERS>+G=<0=98@8@z-/$8:L8:$*+%!P;0$$={ L*+G$OACW%(3BA:3+J@%(*/$*+$4`sL(%(3+V/ -P=93BA:%((V/$*/s0=98@8@J@-P=93+*+zGi/$%¨“+$Jh%(3BA:3+J@%(*/$*+JT ñóòzô~òzô.  78tv‰(9srut-wD, ƒ&pw„T#9y8~s78&pwD&p9 &p9„,rz}p‰(. ›0=93BA:8@=9(,*/Q*+%(J@-P8@J$={ */QK9(=<0%(*/$*+,*+„798@>+-P= ‡ XlkYt Ž9R+#%021Õk(j3Q#2-j58ð n5Qp1(jR+j5z#%7<ˆ *+3BA:8@="*/0))K<%(*/$*+˜„F *+,]^>+3+*/$#&3BAC$6%(#&-P=98jAo$31 +0%!u3/0=93+JjA:8@>f0$; $={ *+„>+#©!$J@8&*+,]^#GŽ A:=9J@J@79>+3+*+=9JTd‰[#Ÿ-+>+(J@=s>+OA:8:$0>+8jA:=zA)1 #²3+0J@J:$8@%!$#&3BA:l>+#²J@-P0~A:8@=G!$8@79=z#Ÿ]^8@R >` 1 3+0%!5T.

(41) Á™ òÊÉ À Ç ÄS¹y»¤Ä É Ë êOÇ À Ë ¹ À. Áò. db =9#&=s$Jd*+%O]^8@3BA:JM0=9#&-P=93+3BA:JM*+[]^8@R>` 1 3+0%!zJ@=$]^8@#²oA:8:$J@=9Jd*+%O]^8@3BA:J4+RS>/$3+*+=GoA:8:)K9JŽ J:$#‘>+#‘#&%(=Q*+%(J@-P8@J@%OK9=+4Mu]^=98@#Lu*+=-+>+(J@=J@8/F $OA:8:$*/5T’HñXlkYt ,F uAC“+-P!uRS>/$ EK9(=<0%(*/$*+W*+W798@>+-P=N#s>+*/y#]^>+3f0$; $={ N*/y]^8@R >` 1 3+0%!5•Y-/$8:,XlkYt.*ü¦54¤$J|0=9#&-P=93+3BA:J *+E#L$%(=98l]^8@R >` 1 3+0%!„J@8$={ uoA:8:$J:$*/$JqA:#&-P=98:$(#&3BA:&#¯8@!P;0$$={ .$Jz*+E#&3+=98|]^8@R >` 1 3+0%! ‡ ef%(7+T Ñ T Ö ‡ Bˆ@)ˆ J@3+*+=XlkYt0/²¦54r=<0=98@8@E=.0=93BA:8/$8F @%(= ‡ ef%(7+T Ñ T Ö ‡ inˆ@ˆ”T.H *+%(JjA:8@%(i+>+%j0$; $={ ,*+J@J:$J *+%O]^8@3BA:Jy0=9#&-P=93+3BA:Jy*+„]^8@R >` 1 3+0%!*+3BA:8@=’*/"3BK9=9OAn=9F 8@%!QA:#&-P=98:$[-P=<*+.J@8y*+J@08@%OAC -P=98l>+#LLRS>/$3BA:%(*/$*+s*+3+=9#&%(3/$*/WK$$8@8@*+>+8:E*+s]^8@R >` 1 3+0%! ‡ -' 58R€1+ˆ”TY_J@J:yRS>/$3BA:%(*/$*+sJ@8/F #&(V+=98M*+J@08@%OACW3+=EbM$-pv F A:>+(=G¥+T GVD > 0. (a). t GVD < 0. (b). t. ef%(79>+8: Ñ T Ö5•|bM$#&-P=y~~F A:8@%(0=y*+W>+#-+>+(J@=N0=9# ‡ Bˆ[K$$8@8@*+>+8:y*+G]^8@R>` 1 3+0%!E-P=9J@%OA:%OK$L ‡ inˆ K$$8@8@*+>+8:W*+Y]^8@R>` 1 3+0%!G3+7BoA:%OK$5T H *+%(J@-P8@J$={ &3+=L#&%(=G!$J@86J@=9#L$*+=L$=&~]^%OA:=W*+z$>5A:=9#&=<*+>+!P;0$$={ G*+|]­$J@q0=93BA:8@%(i+>+# 3/ £ 798:P;0$$={ L*+|K$$8@8@*+>+8:&*+q]^8@R>` 1 3+0%!54/RS>+z3+=L0)$J@=L*+=Lgh%2• J:o /8:’Fq-P=9J@%OA:%OK$5TMf$8:&0=9#&-P3+J:$8 JjACGXlkYtå-P=9J@%OA:%OK$uFI3+0J@J/$8F @%(=sRS>+lV/}‚:q>+#Ÿ(#&3BA:=z*+%(J@-P8@J@%OK9=sRS>+l%(3BA:8@=<*+>+')|K$$8@8@*+>+8: *+L]^8@R >` 1 3+0%!„3+7BoA:%OK$5Tux<#ƒ3BA:8:$8s#ƒ*+~AC$(V+J4sLF -P=9J@J)v F K9M*+#&=93+JjA:8:$8zRS>+E>+#ƒ-/$8z*+ -+8@%(J@#L$JzhF 0)$-/$'h*+h798:$8ŠXlkYt?3+7BoA:%OK$ Ñ  TfH–*+%(J@-P8@J$={ Y-+8@=<*+>+'%(*/l-P=98r>+#-/$8*+h-+8@%(J@#L$J F < Ó È ‡ Ñ T Ñ Ò9ˆ ¯ å'1 × 2 34

(42) 52 ®  9Ó;8 : = Ø <  O Ø ' Ù > : =93+*+  |F s*+%(JjAo$31 +0%!z3BA:8@|s3BA:8:$*/GYsJ:+Fv */°7 s*+6 =G J@%(JjA:: #Ls*+%(J@-P8@J@%OK9=+45 8 ˜‡ Ó ˆG|F s*+%(J@-P8@J$={ $3+79>+!$8 ‡ K98Šef%(7+T Ñ T Þ ˆ”Trbd=93BA:>+*+=+4MF -P=9J@J)v F K9+RS>+h=Y-+>+(J@=|$%(3+*/IJ:$%!I*/l0))K<%(*/$*+M0=9#$(79>+#L K$$8@8@*+>+8:*+,]^8@R >` 1 3+0%![3BA)$={ "-/$8:#&(V+=98W0=93BA:8@=9(,*+JjACK$$8@8@*+>+8:-P=<*+#&=9J&>5A:%((%(')$8 =9>5A:8@=„(#&3BA:=,*+%(J@-P8@J@%OK9=,]^=98:N*/,0))K<%(*/$*+$TEHMA:8:)KŠF Js*+&>+#¢-/$8q*+&798:$*+Jq&>+#¯-/$8|*+ (3BA:J[3BA:8@q$J6798:$*+J60=93+J@79>+%(#&=9J6798:$8MK$$8@8@*+>+8:W*+Y]^8@R >` 1 3+0%!G-P=9J@%OA:%OK$s|3+7BoA:%OK$5TŠZ[=.

(43) Á™ òÊÉ À Ç ÄS¹y»¤Ä É Ë êOÇ À Ë ¹ À. ÁÐ. Mb $-pv F A:>+(=I¥+49%(J@J@=lJ@M#&=9JjA:8:$8/[F J@J@3+0%!$53+=9Jr”“5-P8@%(#&3BA:=9Jf*+h$0=9-+!$#&3BA:=I*+M*+=9%(J]^%¨“5JTr=98 %(J@J@=q*+%¨“+$8@#&=9JŠ-/$8:|=sbM$-pv F A:>+(=|¥q*/|A:J@ ‡ J@<0$; $={ z¥+TÓÒ9ˆ|-/$8jA:6#L$%(J*+~AC$(V/$*/|*+=q-+8@=9i+(#L *+|-+8@=9-/$7BP;0$$={ W0=9#µK$$8@8@*+>+8:W*+Y]^8@R >` 1 3+0%!5T ñóòzô~ò ?. 'w€q+78&pwD&p9. lt -P=9%(J*+M0=9#&3BAC$8r=9Jf0=9#&-P=93+3BA:Jr#L$%(J%(#&-P=98jAC$3BA:Jf3S>+#w!$J@8f*+Mgh%2• J:o /8:54$-P=<*+#&=9J =9i+J@8jK$$8Š3/|ef%(7+T Ñ T Þ =|J@RS>+#LYA}v F -+%(0=Y*+JjA:6!$J@8TŠ›ð!$J@8*+hiP=9#siP)$#&3BA:=|”“50%OACY=|08@%(JjAC$ *+|gh%2• J:o /8:G0=9# >+# 0=9#&-+8@%(#&3BA:=G*+Y=93+*/W#µA:=98@3+=W*+=W-+%(0=W*+|$i+J@=98o0$; $={ ‡ ¹ Ý ¦9¦G3+#Eˆ”Tž› ]^%¨“5MRS>+60%(8@0>+![3/l0))K<%(*/$*+hJ@=$]^8@8/l=F 9Jr~]^%OA:=9Jr3`$={ oŽ(%(3+)$8@Jf*+J@08@%OA:=9JŠ$3BA:8@%(=98@#&3BA:$•0=9# ]^3+*/54n=L~]^%OA:=W*+z$>5A:=$]^=<0)$(%(')P;0$$={ G3+=L08@%(JjAC$p%(3+*+>+'%(8/G>F +# ~]^%OA:=WA:%(-P=&$i+J@=98jK9*+=98[J:oA:>+8/oKF 9 8/$-F +%(*+=+4žJ@J@3+0%!$[-/$8:Q>+#ý!$J@8W*+N]^#zA:=9J@J@79>+3+*+=9JT?H  /79>+8:$%(3+*/u#&=9JjA:8:u>+#‘-/$8W*+ -+8@%(J@#L$JŠRS>+[A:#Ÿ=q-/$-PP*+[0=9#&-P3+J:$8dq*+%(J@-P8@J$={ z-P=9J@%OA:%OK$Y%(3+*+>+'%(*/|3+=z08@%(JjAC$2TrZI|J:+Fv */54 =&!$J@8h#&%OA:l>+#µA:8@# *+|-+>+(J@=9J6*+Y]^#zA:=9J@J@79>+3+*+=9J4nJ@%(3BA:=93+%('poKF 9p#µA:=98@3+=W*+q§9¦9¦G3+#,T E2 α(ω ω) E1 Fenda. θ. fe %(79>+8: Ñ T Þ •–bM)K<%(*/$*+*+>+#¬!$J@8N*+gh%2• J:o /8:U*+Q]^#zA:=9J@J@79>+3+*+=9J ‡ @¡Y8@8N(3+J,#&=<*+”Ž (=<0C\$*·Sˆ”T _ J@J@„A:%(-P=*+,!$J@8l‚/Q]F ^=9%6-+8@=‚@~AC$*+=",*+J@3BK9=9OK<%(*+= #©3+=9J@J@=9JL!$iP=98:oAn=9F 8@%(=9J

(44)  ×  4M=93+*+ 0=93+J@79>+%(#&=9JW798:$8&-+>+(J@=9JW*+„Ö9¦u]^J4MJ@%(3BA:=93+%('poKF 96*+ Þ ¥B¦oA5,F Ù9¦ Ý 3+#,T?Z[=3BAC$3BA:=+4M-/$8: 3+=9J@J:$J6#&*+%(*/$Jd]^=9%c>5A:%((%(')$*+=z>+#µ!$J@8h*+Ygh%2• J:o /8:s0=9#&8@0%!$24<#&=<*+(=sghJ@>+3/$#&%245-+8@=<*+>+'%(*+= -P!ux<-P0~A:8:ŽVB®<J@%(0JWRS>+$4ž$-PJ:$8s*+EJ@8s#&3+=9JsJ@%(3BA:=93+%('poKF 924Š$-+8@J@3BA:=9>’#L$%(=98|-P=$A)1 3+0%! #’F *+%!„JjAC$i+%((%(*/$*+NRS>+.="3+=9J@J@=+T x<79>+#™$i/$%¨“5=$(79>+#L$J&0)$8:$0~A:8)v F JjA:%(0)$J&*+="!$J@8&*+ gh%2• J:o /8:W>5A:%((%(')$*+=s# 3+=9J@J:$J6#&*+%(*/$J• @ ¶·P¸}ÄS¹}ù À Æ^º»¤ÄuÇ)Ë­·P¸}ºP·Ë # À ¾+½ À¿ º¤• Þ ¥B¦zŽd§ Ý ¦G3+#,T.

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