三方相0.95Pb(Zn1/3Nb2/3)O3–0.05PTiO3单晶的相转变特性与电学性能研究

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	三方相0.95Pb(Zn1/3Nb2/3)O3–0.05PTiO3单晶的相转变特性与电学性能研究
	Fang BJ ; Pan SS ; Du QB ; 赵祥永 ; 徐海清 ; 罗豪甦
刊名	Journal of the Physical Society of Japan
	2010-09-27
卷号	79 期号:10 页码:104703-104709
ISSN号	0031-9015
其他题名	Phase Transition Character and Electrical Properties of Rhombohedral 0.95Pb(Zn1/3Nb2/3)O3–0.05PTiO3 Single Crystals
通讯作者	方必军
中文摘要	Large-size and high-quality 0.95Pb(Zn1/3Nb2/3)O3–0.05PbTiO3 (0.95PZN–0.05PT) single crystals were grown by a modified Bridgman method using an allomeric 0.69Pb(Mg1/3Nb2/3)O3–0.31PbTiO3 single crystal as a seed. The as-grown 0.95PZN–0.05PT single crystals exhibit rhombohedral perovskite structure, which changes wholly into cubic structure at 165 C confirmed by high-temperature X-ray diffraction measurement. 0.95PZN–0.05PT exhibits broad and diffused dielectric response peaks accompanied by apparent dielectric frequency dispersion. Polarization induces an additional dielectric anomaly around 109 C accompanied by the increase of the temperature of dielectric maximum (Tm),decrease of the value of dielectric maximum ("m) and the enhancement of frequency dispersion which can be assigned to the orientation of ferroelectric domain or a macro–micro domain transition upon heating. The [001]-oriented 0.95PZN–0.05PT crystals exhibit excellent electrical properties, where remanent polarization Pr is 36.89 mC/cm2 and piezoelectric constant d33 is around 1120–1180 pC/N.Pyroelectric coefficient p, detectivity and voltage responsivity figures of merit Fd and Fv of the 0.95PZN–0.05PT single crystals are 458 mC/(K m2), 6.027 mPa 1=2, and 0.0125m2/C, respectively,which increase greatly over the temperature range measured. It is needed to improve temperature stability and voltage responsivity to meet the requirements of practical applications. 0.95PZN–0.05PT exhibits rather high transparency, with the ultraviolet cut-off edge near 385 nm indicating a low-lying electronic energy gap of 3:12 eV. The infrared-absorption band occurs at 595 cm 1, which can be attributed to the normal vibration of (Zn1/3Nb2/3)/TiO3 group.
学科主题	材料科学
收录类别	SCI收录
语种	英语
公开日期	2012-07-05
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/1199]
专题	上海硅酸盐研究所_无机功能材料与器件重点实验室_期刊论文
推荐引用方式 GB/T 7714	Fang BJ,Pan SS,Du QB,等. 三方相0.95Pb(Zn1/3Nb2/3)O3–0.05PTiO3单晶的相转变特性与电学性能研究[J]. Journal of the Physical Society of Japan,2010,79(10):104703-104709.
APA	Fang BJ,Pan SS,Du QB,赵祥永,徐海清,&罗豪甦.(2010).三方相0.95Pb(Zn1/3Nb2/3)O3–0.05PTiO3单晶的相转变特性与电学性能研究.Journal of the Physical Society of Japan,79(10),104703-104709.
MLA	Fang BJ,et al."三方相0.95Pb(Zn1/3Nb2/3)O3–0.05PTiO3单晶的相转变特性与电学性能研究".Journal of the Physical Society of Japan 79.10(2010):104703-104709.