ISOMORPHOUS SUBSTITUTION IN NONLINEAR OPTICAL KTIOPO4 - TIME-OF-FLIGHT NEUTRON POWDER DIFFRACTION STUDY OF K0.5RB0.5TIOPO4

被引：10

作者：

CRENNELL, SJ ^{[1
]}

CHEETHAM, AK ^{[1
]}

KADUK, JA ^{[1
]}

JARMAN, RH ^{[1
]}

机构：

[1] AMOCO RES CTR,NAPERVILLE,IL 60566

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1991年 / 1卷 / 02期

关键词：

TIME-OF-FLIGHT NEUTRON DIFFRACTION; POWDER DIFFRACTION; NONLINEAR OPTICAL MATERIAL; RIETVELD ANALYSIS; PHOSPHATE;

D O I：

10.1039/jm9910100297

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Rubidium is ion-exchanged into non-linear KTiOPO4 in the preparation of optical waveguide devices. The structure of K0.5Rb0.5TiOPO4 has been determined by Rietveld analysis of time-of-flight neutron powder diffraction data: Pn2(1)a, a = 12.8961(10) angstrom, b = 10.5929(8) angstrom, c = 6.4299(5) angstrom; R(P) = 3.45%, wR(P) = 5.50%. It is found that substitution of K by Rb takes place preferentially at the K(2) site, which contains 71% Rb, rather than the K(1) site, which contains only 29%.

引用

页码：297 / 298

页数：2

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