Compositional behavior of Raman active phonons in Pb(Zr1-xTix)3 ceramics

Kód výsledku v IS VaVaI

RIV/68378271:_____/15:00454323 - isvavai.cz

Výsledek na webu

http://dx.doi.org/10.1103/PhysRevB.91.014104

DOI - Digital Object Identifier

10.1103/PhysRevB.91.014104

Jazyk výsledku

angličtina

Název v původním jazyce

Compositional behavior of Raman active phonons in Pb(Zr1-xTix)3 ceramics

Popis výsledku v původním jazyce

A systematic study of the Raman spectra of PZT ceramics has been performed in a broad temperature interval (10?600 K) and a broad Ti/Zr concentration range around the morphotropic phase boundary (x = 0.25?0.70). The number of the spectral components wasestimated by a standard fitting procedure with damped harmonic oscillators as well as by counting the number of peaks and shoulders with the help of a purposely designed mathematical analysis based on frequency derivatives of the Raman spectra. This lastmethod proves to be very useful to study Raman spectra of disordered materials. For the case of PZT, the comparison with the Raman modes of PbTiO3 allows to assign the phonon bands on both sides of the morphotropic phase boundary, and the crossover fromthe tetragonal to rhombohedral phase spectra is clearly visible. However there are no indications of a systematic splitting of the E-symmetry modes into monoclinic A?-A?? doublets in the morphotropic samples.

Název v anglickém jazyce

Compositional behavior of Raman active phonons in Pb(Zr1-xTix)3 ceramics

Popis výsledku anglicky

A systematic study of the Raman spectra of PZT ceramics has been performed in a broad temperature interval (10?600 K) and a broad Ti/Zr concentration range around the morphotropic phase boundary (x = 0.25?0.70). The number of the spectral components wasestimated by a standard fitting procedure with damped harmonic oscillators as well as by counting the number of peaks and shoulders with the help of a purposely designed mathematical analysis based on frequency derivatives of the Raman spectra. This lastmethod proves to be very useful to study Raman spectra of disordered materials. For the case of PZT, the comparison with the Raman modes of PbTiO3 allows to assign the phonon bands on both sides of the morphotropic phase boundary, and the crossover fromthe tetragonal to rhombohedral phase spectra is clearly visible. However there are no indications of a systematic splitting of the E-symmetry modes into monoclinic A?-A?? doublets in the morphotropic samples.

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

GA13-15110S: Vysokofrekvenční dielektrická disperze feroelektrických perovskitů: fundamentální studia pokročilými přístupy

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Physical Review. B

ISSN

1098-0121

e-ISSN

—

Svazek periodika

91

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

"014104-1"-"014104-8"

Kód UT WoS článku

000349344400001

EID výsledku v databázi Scopus

2-s2.0-84921033464