Direct observation of the near-surface layer in Pb(Mg1/3Nb2/3)O3 using neutron diffraction -: art. no. 172204

被引：42

作者：

Conlon, KH ^{[1
]}

Luo, H

Viehland, D

Li, JF

Whan, T

Fox, JH

Stock, C

Shirane, G

机构：

[1] CNR, Chalk River, ON K0J 1J0, Canada

[2] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 201800, Peoples R China

[3] Virginia Tech, Dept Mat Sci & Engn, Blacksburg, VA 24061 USA

[4] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada

[5] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 17期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1103/PhysRevB.70.172204

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spatially resolved neutron diffraction as a function of crystal depth in Pb(Mg1/3Nb2/3)O-3 reveals the presence of a distinct near-surface region where a strong distortion in the lattice exists. A dramatic change in both the lattice constant and the Bragg peak intensity as a function of crystal depth is observed to occur in this region over a length scale similar to100 mum. This confirms a previous assertion, based on a comparison between high-energy x rays and neutrons, that such a near surface region exists in the relaxors. Consequences to both single crystal and powder diffraction measurements and previous bulk neutron diffraction measurements on large single crystals are discussed.

引用

页码：1 / 4

页数：4

共 18 条

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