Infrared spectroscopy on [Pb(Zn1/3Nb2/3)O3]0.92-[PbTiO3]0.08 and [Pb(Mg1/3Nb2/3)O3]0.71-[PbTio3]0.29] single crystals.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F03%3A00000012" target="_blank" >RIV/46747885:24220/03:00000012 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Infrared spectroscopy on [Pb(Zn1/3Nb2/3)O3]0.92-[PbTiO3]0.08 and [Pb(Mg1/3Nb2/3)O3]0.71-[PbTio3]0.29] single crystals.

Popis výsledku v původním jazyce

Far-infrared reflectivity spectra of PZN-PT and PMN-PT single crystals were inversigated between 10 and 530 K, micro/Raman spectra were recorded between 300 and 800 K. No phonon solfening was observed near either of the ferroelectric phase transition. The low-frequency dielectric anomaly in the paraelectric phase is caused by contribution of dynamic polar nanoclusters with the main dispersion in the microwave range. Infrared and Raman spectra confirm the locally doubled unit cell in the paraelectric andferroelectric phases due to the ordering in the perovskite B sites and occurence of polar nanoclusters in paraelectric phase. The lowest-frequency transverse optical phonon mode active in the infrared spectra is underclamped in contrast to the recent results of inelastic neutron scattering, where no TO1 mode could be observed for the wave vectors q. The discrepancy was explain

Název v anglickém jazyce

Infrared spectroscopy on [Pb(Zn1/3Nb2/3)O3]0.92-[PbTiO3]0.08 and [Pb(Mg1/3Nb2/3)O3]0.71-[PbTio3]0.29] single crystals.

Popis výsledku anglicky

Far-infrared reflectivity spectra of PZN-PT and PMN-PT single crystals were inversigated between 10 and 530 K, micro/Raman spectra were recorded between 300 and 800 K. No phonon solfening was observed near either of the ferroelectric phase transition. The low-frequency dielectric anomaly in the paraelectric phase is caused by contribution of dynamic polar nanoclusters with the main dispersion in the microwave range. Infrared and Raman spectra confirm the locally doubled unit cell in the paraelectric andferroelectric phases due to the ordering in the perovskite B sites and occurence of polar nanoclusters in paraelectric phase. The lowest-frequency transverse optical phonon mode active in the infrared spectra is underclamped in contrast to the recent results of inelastic neutron scattering, where no TO1 mode could be observed for the wave vectors q. The discrepancy was explain

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

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

Kód důvěrnosti údajů

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

Název periodika

Journal of Applid Physics

ISSN

0021-8979

e-ISSN

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Svazek periodika

vol. 93

Číslo periodika v rámci svazku

2, 2003

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

933-939

Kód UT WoS článku

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EID výsledku v databázi Scopus

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