Anisotropic Colossal Dielectric Response of 0.93Pb(Fe(1/2)Nb(1/2))O(3)-0.07PbTiO(3) Single Crystals along 100 and 111 Directions

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	Anisotropic Colossal Dielectric Response of 0.93Pb(Fe(1/2)Nb(1/2))O(3)-0.07PbTiO(3) Single Crystals along 100 and 111 Directions
	K. Liu; X. Y. Zhang; J. Z. Xiao
	2011
发表期刊	Japanese Journal of Applied Physics
ISSN	0021-4922
卷号	50 期号:10
摘要	The temperature, frequency, and voltage dependences of the dielectric properties of 0.93Pb(Fe(1/2)Nb(1/2))O(3)-0.07PbTiO(3) single crystals were investigated in the temperature range of 100-300 K. An anisotropic colossal dielectric response was observed when the probe of the AC field was along the [100] and [111] directions. One relaxation was detected in the [100] direction, while two relaxations were detected in the [111] direction. The activation energies of the relaxations are in the range of 0.155-0.190 eV, indicating that the relaxations are probably caused by 3d electrons hopping between Fe(2+) and Fe(3+). The origin of the anisotropic colossal dielectric response can be explained by a "two-hopping path'' model. (C) 2011 The Japan Society of Applied Physics
部门归属	[liu, kui; zhang, xinyi; xiao, jingzhong] fudan univ, synchrotron radiat res ctr, state key lab surface phys, shanghai 200433, peoples r china. [liu, kui; zhang, xinyi; xiao, jingzhong] fudan univ, dept phys, shanghai 200433, peoples r china. [xiao, jingzhong] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;liu, k (reprint author), fudan univ, synchrotron radiat res ctr, state key lab surface phys, shanghai 200433, peoples r china;xy-zhang@fudan.edu.cn
关键词	Ceramics
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30538
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	K. Liu,X. Y. Zhang,J. Z. Xiao. Anisotropic Colossal Dielectric Response of 0.93Pb(Fe(1/2)Nb(1/2))O(3)-0.07PbTiO(3) Single Crystals along 100 and 111 Directions[J]. Japanese Journal of Applied Physics,2011,50(10).
APA	K. Liu,X. Y. Zhang,&J. Z. Xiao.(2011).Anisotropic Colossal Dielectric Response of 0.93Pb(Fe(1/2)Nb(1/2))O(3)-0.07PbTiO(3) Single Crystals along 100 and 111 Directions.Japanese Journal of Applied Physics,50(10).
MLA	K. Liu,et al."Anisotropic Colossal Dielectric Response of 0.93Pb(Fe(1/2)Nb(1/2))O(3)-0.07PbTiO(3) Single Crystals along 100 and 111 Directions".Japanese Journal of Applied Physics 50.10(2011).