PHASE-TRANSITION IN PBTIO3 ULTRAFINE PARTICLES OF DIFFERENT SIZES

doi:10.1088/0953-8984/5/16/018

CORC > 北京大学 > 化学与分子工程学院

	PHASE-TRANSITION IN PBTIO3 ULTRAFINE PARTICLES OF DIFFERENT SIZES
	ZHONG, WL ; JIANG, B ; ZHANG, PL ; MA, JM ; CHENG, HM ; YANG, ZH ; LI, LX
刊名	journal of physics condensed matter
	1993
关键词	GRAIN-SIZE CERAMICS MODES
DOI	10.1088/0953-8984/5/16/018
英文摘要	The size effect on the ferroelectric phase transition in PbTiO3 ultra-fine particles is reported. Samples with particle sizes from 20 to 200 nm were prepared by a sol-gel process followed by calcining at different temperatures. The particle size was determined by x-ray diffraction from the integrated width of diffractions. The soft-mode frequency at room temperature was measured by Raman scattering. It decreases with decreasing particle size. The ferroelectric phase transition was traced by specific-heat measurement. The transition temperature decreases and the transition becomes diffused as the particle size decreases. The size dependence of T(C) can be described by T(C)(D) = 766 - 256/(D - 8.8) (K), where 766 K is the T(C) for bulk PbTiO3 and D (nm) is the particle size. This equation gives a critical size of 9.1 nm below which ferroelectricity disappears.; Physics, Condensed Matter; SCI(E); 171; ARTICLE; 16; 2619-2624; 5
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/402229]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	ZHONG, WL,JIANG, B,ZHANG, PL,et al. PHASE-TRANSITION IN PBTIO3 ULTRAFINE PARTICLES OF DIFFERENT SIZES[J]. journal of physics condensed matter,1993.
APA	ZHONG, WL.,JIANG, B.,ZHANG, PL.,MA, JM.,CHENG, HM.,...&LI, LX.(1993).PHASE-TRANSITION IN PBTIO3 ULTRAFINE PARTICLES OF DIFFERENT SIZES.journal of physics condensed matter.
MLA	ZHONG, WL,et al."PHASE-TRANSITION IN PBTIO3 ULTRAFINE PARTICLES OF DIFFERENT SIZES".journal of physics condensed matter (1993).