Microstructures associated with dielectric and magnetic properties in (1-x)BiFeO3-xBaTiO3

被引：13

作者：

Horibe, Y

Nakayama, M

Hosokoshi, Y

Asaka, T

Matsui, Y

Asada, T

Koyama, Y

Mori, S

机构：

[1] Osaka Prefecture Univ, Dept Phys, Sakai, Osaka 5998531, Japan

[2] Natl Inst Mat Sci, High Voltage Elect Microscopy Stn, Tsukuba, Ibaraki 3050044, Japan

[3] Waseda Univ, Dept Mat Sci, Shinjuku Ku, Tokyo 1698555, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 2005年 / 44卷 / 9B期

关键词：

multiferroics; ferroelectricity; ferromagnetism; mixed-perovskite compound; ferroelectric domains; transmission electron microscopy;

D O I：

10.1143/JJAP.44.7148

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have investigated microstructures associated with the magnetic and dielectric properties of multiferroic mixed-perovskite compounds of the formula (1 - x)BiFeO3-xBaTiO(3) by transmission electron microscopy (TEM) combined with conventional dielectric and magnetic measurements. TEM observation revealed that there exist complicated ferroelectric (FE) domains 20-30 nm in size in the FE phase of BiFeO3. It was also found that, in an x = 0.25 compound, a weak spontaneous magnetization appears in the FE phase at 20K. From the results of the X-ray and electron diffraction experiments, it is suggested that this weak spontaneous magnetization is closely associated with the decrease in the extent of rhombohedral distortion by a partial substitution of BaTiO3 for BiFeO3.

引用

页码：7148 / 7150

页数：3

共 12 条

[1]

Danilkevitch MI, 2000, PHYS STATUS SOLIDI B, V222, P541, DOI 10.1002/1521-3951(200011)222:2<541::AID-PSSB541>3.0.CO

[2]

2-0

[3] Growth mechanism of YMnO3 film as a new candidate for nonvolatile memory devices [J].