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	CaCu3Ti4O12-type colossal dielectric relaxation in complex perovskite (Ba1-xLax)(Ti 1-xCrx)O3
	Fukunaga, Mamoru ; Uesu, Yoshiaki ; Li, Guobao
	2007
英文摘要	Dielectric constants of complex perovskite oxide (Ba1-xLa x)(Ti1-xCrx)O3 (BLTC) ceramics with 0.4&lex&le0.7 are measured, and a remarkable colossal dielectric relaxation which is quite similar to that of CaCu3Ti4O12 (CCTO) is found in higher temperature region above the ferroelectric phase transition. This kind of dielectric relaxation is successfully explained by an equivalent circuit model of a series of two R-C parallel circuits with temperature-dependent electrical conductivity and temperature-independent intrinsic dielectric constant. It is also found that the dc bias effect on the sample can distinguish this hetero-structure model and the proper Debye relaxation model of a homogeneous phase.; EI; 1; 106-114; 354
语种	英语
DOI标识	10.1080/00150190701454719
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/461611]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Fukunaga, Mamoru,Uesu, Yoshiaki,Li, Guobao. CaCu3Ti4O12-type colossal dielectric relaxation in complex perovskite (Ba1-xLax)(Ti 1-xCrx)O3. 2007-01-01.

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