Ultra-broad-band dielectric spectroscopy and phonons in (Pb.sub.1-x/2./sub.La.sub.x./sub.)(Zr.sub.0.9./sub.Ti.sub.0.1./sub.)O.sub.3./sub..

Buixaderas, Elena; Bovtun, Viktor; Veljko, Sergiy; Savinov, Maxim; Kužel, Petr; Gregora, Ivan; Kamba, Stanislav; Reaney, I.

doi:https://dx.doi.org/10.1063/1.3501105

Number of the records: 1

Ultra-broad-band dielectric spectroscopy and phonons in (Pb.sub.1-x/2./sub.La.sub.x./sub.)(Zr.sub.0.9./sub.Ti.sub.0.1./sub.)O.sub.3./sub..

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SYSNO ASEP	0352316
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Ultra-broad-band dielectric spectroscopy and phonons in (Pb_1-x/2La_x)(Zr_0.9Ti_0.1)O₃.
Author(s)	Buixaderas, Elena (FZU-D)_{RID, ORCID} Bovtun, Viktor (FZU-D)_{RID, ORCID, SAI} Veljko, Sergiy (FZU-D) Savinov, Maxim (FZU-D)_{RID, ORCID} Kužel, Petr (FZU-D)_{RID, ORCID, SAI} Gregora, Ivan (FZU-D)_{RID, ORCID} Kamba, Stanislav (FZU-D)_{RID, ORCID, SAI} Reaney, I. (GB)
Source Title	Journal of Applied Physics. - : AIP Publishing - ISSN 0021-8979 Roč. 108, č. 10 (2010), 104101/1-104101/10
Number of pages	10 s.
Language	eng - English
Country	US - United States
Keywords	PLZT ; phase transitions ; Raman and IR spectroscopy ; ferro-antiferroelectricity
Subject RIV	BM - Solid Matter Physics ; Magnetism
R&D Projects	KAN301370701 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	GAP204/10/0616 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z10100520 - FZU-D (2005-2011)
UT WOS	000285005000108
DOI	10.1063/1.3501105
Annotation	The dielectric behavior of (Pb1−x/2Lax)(Zr0.9Ti0.1)O3 PLZT 100x/90/10 (0 ≤ 100x ≤ 1) was studied in the frequency range 102–1014 Hz using dielectric, time-domain terahertz (THz), far-infrared, and Raman spectroscopy in the temperature interval 10–900 K. PZT 90/10 and PLZT 2/90/10 undergo two phase transitions, from a cubic paraelectric to a rhombohedral untilted ferroelectric (FE) phase and on further cooling to a tilted FE phase. PLZT 4/90/10 and PLZT 10/90/10 are incommensurately modulated and composed of an intergrowth of polar and antipolar cation displacements. These samples consequently demonstrate a FE soft mode which exhibits minimal frequency several tens of degrees above the nominal antiferroelectric phase transition temperature. The dielectric response of PLZT 100x/90/10 is mainly governed by a gigahertz relaxation and a soft phonon component in the THz range.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2011

Number of the records: 1