Phase transitions in LixAg1-x(Nb0.5Ta0.5)O3 solid solutions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F10%3A00437633" target="_blank" >RIV/68378271:_____/10:00437633 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1063/1.3485813" target="_blank" >http://dx.doi.org/10.1063/1.3485813</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.3485813" target="_blank" >10.1063/1.3485813</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Phase transitions in LixAg1-x(Nb0.5Ta0.5)O3 solid solutions

Popis výsledku v původním jazyce

LixAg1-x(Nb0.5Ta0.5)O-3 (0 <= x <= 0.25) solid solutions have been fabricated by the mixed oxide method. Compositions with x <= 0.15 were single phase perovskite by x-ray diffraction (XRD) and could be indexed using the end member, Ag(Nb0.5Ta0.5)O-3 Pbcmcell, root 2a, root 2a, 4a (where a is the pseudocubic lattice parameter). For x >= 0.20, Li(Nb, Ta)O-3 peaks emerged as a second phase. Electron diffraction patterns from the perovskite phase could also be indexed according to the Pbcm cell but there was a systematic decrease in the intensity of {00 1/4}(p) as Li concentration increased which indicated that the correlation length of cation displacements perpendicular to c decreased from long to short range order. The reduction in correlation length ofcation displacements resulted in a convergence of the M-1-M-2-M-3 transitions to give a single broad, frequency dependent maximum at x=0.15. Further increase in Li concentration did not qualitatively affect the temperature dependent diel

Název v anglickém jazyce

Phase transitions in LixAg1-x(Nb0.5Ta0.5)O3 solid solutions

Popis výsledku anglicky

LixAg1-x(Nb0.5Ta0.5)O-3 (0 <= x <= 0.25) solid solutions have been fabricated by the mixed oxide method. Compositions with x <= 0.15 were single phase perovskite by x-ray diffraction (XRD) and could be indexed using the end member, Ag(Nb0.5Ta0.5)O-3 Pbcmcell, root 2a, root 2a, 4a (where a is the pseudocubic lattice parameter). For x >= 0.20, Li(Nb, Ta)O-3 peaks emerged as a second phase. Electron diffraction patterns from the perovskite phase could also be indexed according to the Pbcm cell but there was a systematic decrease in the intensity of {00 1/4}(p) as Li concentration increased which indicated that the correlation length of cation displacements perpendicular to c decreased from long to short range order. The reduction in correlation length ofcation displacements resulted in a convergence of the M-1-M-2-M-3 transitions to give a single broad, frequency dependent maximum at x=0.15. Further increase in Li concentration did not qualitatively affect the temperature dependent diel

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Applied Physics

ISSN

0021-8979

e-ISSN

—

Svazek periodika

108

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

"064117 -1"-"064117 -6"

Kód UT WoS článku

000282646400123

EID výsledku v databázi Scopus

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