Phase transitions of pure and Ba-doped BiFeO3 under high pressure

被引：13

作者：

Chen, Zan-Wun ^{[1
]}

Lee, Jiann-Shing ^{[1
]}

Huang, Tony ^{[2
]}

Lin, Chih-Ming ^{[3
]}

机构：

[1] Natl Pingtung Univ Educ, Dept Appl Phys, Pingtung 90047, Taiwan

[2] Natl Cheng Kung Univ, Dept Earth Sci, Tainan 70101, Taiwan

[3] Natl Hsinchu Univ Educ, Dept Appl Sci, Hsinchu, Taiwan

来源：

SOLID STATE COMMUNICATIONS | 2012年 / 152卷 / 16期

关键词：

Bismuth ferrite; X-ray diffraction; Phase transitions; TEMPERATURE; NI;

D O I：

10.1016/j.ssc.2012.05.010

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In order to evaluate the effect of impurity substitution on phase transition of BFO, we report high-pressure X-ray diffraction experiments on pure and Ba-doped BiFeO3 powders in diamond-anvil cells up to 18.7 GPa. A low-temperature hydrothermal synthesis route was utilized to fabricate these two samples. The experimental results reveal that two structural phase transitions take place in these two different samples in the investigated pressure range. As two ADXRD data sets are compared, it is shown that the intermediate phase II is not detected in Ba-doped sample. In addition, modifications in phase transition behavior and compressibility due to a minor Ba incorporation highlight the high sensitivity of BFO to variations of chemical composition. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：1613 / 1617

页数：5

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