Structure, dielectric and magnetodielectric properties of Bi(1-x)Gd(x)FeO(3) Ceramics

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	Structure, dielectric and magnetodielectric properties of Bi(1-x)Gd(x)FeO(3) Ceramics
	J. B. Li; G. H. Rao; Y. G. Xiao; J. Luo; G. Y. Liu; J. R. Chen; J. K. Liang
	2010
发表期刊	Chinese Physics B
ISSN	1674-1056
卷号	19 期号:10
摘要	Different magnetodielectric effects were observed in Bi(1-x)Gd(x)FeO(3) ceramics depending on gadolinium content. A positive one was observed in the samples with x <= 0.10 at 295 K and 16 K, and a negative one in the sample with x = 0.4 at 16 K. Structure analysis by x-ray diffraction (XRD) reveals that the samples crystallize in the R3c structure (ferroelectrics) for x < 0.08 and in the Pbnm structure (paraelectrics) for x >= 0 : 3 at room temperature. Temperature-dependent dielectric response and x-ray diffraction confirm the occurrence of a structural transition in the Pbnm phase at low temperature for the samples with x <= 0.4. While the positive magnetodielectric effects can be attributed to a coupling of magnetic and crystallographic structures of the R 3 c phase, the observed negative magnetodielectric effect in the Pbnm phase can be associated with a low-temperature modification of the Pbnm structure. The observed dual-signed magnetodielectric effects suggest that the Bi(1-x)Gd(x)FeO(3) oxides are a good prototype for understanding the magnetodielectric coupling mechanism in this kind of materials.
部门归属	[li jing-bo; rao guang-hui; luo jun; liu guang-yao; chen jing-ran; liang jing-kui] chinese acad sci, beijing natl lab condensed matter phys, inst phys, beijing 100190, peoples r china. [xiao yin-guo] forschungszentrum julich, inst festkoerperforsch, d-52425 julich, germany. [liang jing-kui] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;li, jb (reprint author), chinese acad sci, beijing natl lab condensed matter phys, inst phys, beijing 100190, peoples r china;jbli@aphy.iphy.ac.cn
关键词	Multiferroic Magnetodielectric Effect X-ray Diffraction Bi(1-x)Gd(x)Feo(3) Ceramics Temperature-dependence Bifeo3 Crystal Ferrite System
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31215
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. B. Li,G. H. Rao,Y. G. Xiao,et al. Structure, dielectric and magnetodielectric properties of Bi(1-x)Gd(x)FeO(3) Ceramics[J]. Chinese Physics B,2010,19(10).
APA	J. B. Li.,G. H. Rao.,Y. G. Xiao.,J. Luo.,G. Y. Liu.,...&J. K. Liang.(2010).Structure, dielectric and magnetodielectric properties of Bi(1-x)Gd(x)FeO(3) Ceramics.Chinese Physics B,19(10).
MLA	J. B. Li,et al."Structure, dielectric and magnetodielectric properties of Bi(1-x)Gd(x)FeO(3) Ceramics".Chinese Physics B 19.10(2010).