The origin of antiferroelectricity in PbZrO3

被引：247

作者：

Tagantsev, A. K. ^{[1
,2
]}

Vaideeswaran, K. ^{[1
]}

Vakhrushev, S. B. ^{[2
,3
]}

Filimonov, A. V. ^{[3
]}

Burkovsky, R. G. ^{[3
,4
]}

Shaganov, A. ^{[3
]}

Andronikova, D. ^{[3
]}

Rudskoy, A. I. ^{[3
]}

Baron, A. Q. R. ^{[5
,6
]}

Uchiyama, H. ^{[5
,6
]}

Chernyshov, D. ^{[7
]}

Bosak, A. ^{[4
]}

Ujma, Z. ^{[8
]}

Roleder, K. ^{[8
]}

Majchrowski, A. ^{[9
]}

Ko, J. -H. ^{[10
]}

Setter, N. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, Ceram Lab, CH-1015 Lausanne, Switzerland

[2] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

[3] St Petersburg State Polytech Univ, St Petersburg 195251, Russia

[4] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[5] RIKEN, SPring 8, Sayo, Hyogo 679, Japan

[6] JASRI, Sayo, Hyogo 679, Japan

[7] ESRF, Swiss Norwegian Beamlines, F-38043 Grenoble, France

[8] Univ Silesia, Inst Phys, PL-40007 Katowice, Poland

[9] Mil Univ Technol, Inst Appl Phys, PL-00908 Warsaw, Poland

[10] Hallym Univ, Dept Phys, Chunchon 200702, Gangwondo, South Korea

来源：

NATURE COMMUNICATIONS | 2013年 / 4卷

基金：

俄罗斯基础研究基金会; 瑞士国家科学基金会; 欧洲研究理事会; 新加坡国家研究基金会;

关键词：

STRUCTURAL PHASE-TRANSITIONS; LATTICE-DYNAMICS; CENTRAL-MODE; INSTABILITIES; CRYSTALS;

D O I：

10.1038/ncomms3229

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Antiferroelectrics are essential ingredients for the widely applied piezoelectric and ferroelectric materials: the most common ferroelectric, lead zirconate titanate is an alloy of the ferroelectric lead titanate and the antiferroelectric lead zirconate. Antiferroelectrics themselves are useful in large digital displacement transducers and energy-storage capacitors. Despite their technological importance, the reason why materials become antiferroelectric has remained allusive since their first discovery. Here we report the results of a study on the lattice dynamics of the antiferroelectric lead zirconate using inelastic and diffuse X-ray scattering techniques and the Brillouin light scattering. The analysis of the results reveals that the antiferroelectric state is a 'missed' incommensurate phase, and that the paraelectric to antiferroelectric phase transition is driven by the softening of a single lattice mode via flexoelectric coupling. These findings resolve the mystery of the origin of antiferroelectricity in lead zirconate and suggest an approach to the treatment of complex phase transitions in ferroics.

引用

页数：8

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