The rhombohedral phase with incommensurate modulation in Na1/2Bi1/2TiO3

被引：71

作者：

Balagurov, AM

Koroleva, EY

Naberezhnov, AA

Sakhnenko, VP

Savenko, BN

Ter-Oganessian, NV

Vakhrushev, SB ^{[1
]}

机构：

[1] JINR, Frank Lab Neurtron Phys, Dubna, Russia

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

[3] Rostov State Univ, Inst Phys, Rostov Na Donu 344090, Russia

来源：

PHASE TRANSITIONS | 2006年 / 79卷 / 1-2期

基金：

俄罗斯基础研究基金会;

关键词：

sodium bismuth titanate; neutron scattering; atomic ordering; incommensurate phase;

D O I：

10.1080/01411590500496238

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The phase transition from tetragonal to rhombohedral phase in sodium bismuth titanate (NBT) is studied by means of neutron scattering. It is found that the rhombohedral phase has incommensurate modulation along the four-fold axis of the precursor tetragonal phase. The appearance of the incommensurate modulation is discussed on the symmetry grounds in the framework of the phenomenological theory of phase transitions.

引用

页码：163 / 173

页数：11

共 25 条

[1] A NEUTRON TIME-OF-FLIGHT DIFFRACTOMETER WITH A ONE-DIMENSIONAL POSITION-SENSITIVE COUNTER [J].