Structural behaviour of the mixed-layer Aurivillius-phase Bi7Ti4NbO21

被引：12

作者：

Boullay, P ^{[1
]}

Mercurio, D ^{[1
]}

机构：

[1] Univ Limoges, CNRS, UMR6638, F-87060 Limoges, France

来源：

INTEGRATED FERROELECTRICS | 2004年 / 62卷

关键词：

aurivillius phases; Neutron Powder Diffraction; phase transitions; ferroelectric crystals;

D O I：

10.1080/10584580490456407

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The structural behaviour of the mixed-layer Aurivillius-phase Bi7Ti4NbO21 as a function of temperature is investigated by Neutron Powder Diffraction (NPD). The first dielectric anomaly is associated to the regularisation of the "Bi4Ti3O12 part" of the structure while the "Bi3TiNbO9 part" is almost unaffected. The data recorded above the second dielectric anomaly indicate the probable existence of an intermediate orthorhombic paraelectric phase.

引用

页码：149 / 154

页数：6

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