Incommensurate instability and diffuse scattering at Brillouin zone boundary in Zr-rich lead zirconate titanate

被引：2

作者：

Andronikova, D. A. ^{[1
]}

Bronwald, Iu. A. ^{[1
,2
]}

Leontiev, I. N. ^{[3
]}

Leontiev, N. G. ^{[4
]}

Chernyshov, D. Yu. ^{[5
]}

Filimonov, A. V. ^{[2
]}

Vakhrushev, S. B. ^{[1
,2
]}

机构：

[1] Ioffe Inst, St Petersburg, Russia

[2] Peter Great St Petersburg Polytech Univ, Inst Phys Nanotechnol & Telecommun, St Petersburg, Russia

[3] Southern Fed Univ, Rostov Na Donu, Russia

[4] Don State Agr Univ, Azov Black Sea Engn Inst, Rostov Na Donu, Rostov Oblast, Russia

[5] ESRF, Swiss Norwegian Beamlines, Grenoble, France

来源：

FERROELECTRICS | 2019年 / 538卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

Ferroelectricity; phase transitions; diffuse scattering; PHASE-TRANSITIONS; FERROELECTRIC PHASE; PBZRO3;

D O I：

10.1080/00150193.2019.1569987

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Detailed study of the X-ray diffuse scattering in the paraelectric phase of the PbZr0.985Ti0.015O3 was carried out. We concentrated on the analysis of the scattering peculiarities in the vicinities of M- and R- points of the Brillouin zone. We have observed a critical increase of the diffuse scattering at the position Q approximate to (0.47+h 0.53+k l) slightly aside of M point on cooling to the intermediate phase. We attribute observed critical scattering to a mixed mode containing both oxygen octahedral tilts and antiparallel cationic displacements. Tentative conclusion is made describing earlier reported complicated set of the satellite peaks around M-point as the result of the soft-mode driven incommensurate phase transition.

引用

页码：65 / 73

页数：9

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