Growth and electrical properties of Mg:α-LiIO3 crystal

被引：8

作者：

Du, YinXiao ^{[1
]}

Sun, Yuping ^{[1
]}

Chen, W. C. ^{[1
]}

Chen, X. L. ^{[1
]}

Zhang, D. F. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China

来源：

JOURNAL OF CRYSTAL GROWTH | 2006年 / 291卷 / 02期

基金：

中国国家自然科学基金;

关键词：

crystal growth; dielectric constant; doping; electrical conductivity; electrical properties; full-width at half-maximum; segregation coefficient; magnesium;

D O I：

10.1016/j.jcrysgro.2006.03.034

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The 20-70 ppm Mg2+ -doped alpha-lithium iodate (Mg:alpha-LiIO3) Crystals were successfully grown by aqueous solution method. Transparent and well-crystallized hexagonal prisms were obtained by evaporation with controlled condensation of water solutions at a constant temperature of 60 degrees C. An intriguing finding is that the segregation coefficient of Mg2+ ions in the Mg(70ppm):alpha-LiIO3 crystal is up to 2.5, suggesting the Mg2+ ions are easily incorporated into crystal lattice during the crystal growth process. The physical properties of electrical conductivity, dielectric and piezoelectric characterization are investigated on the Mg(70ppm):alpha-LiIO3 crystals. In comparison with the pure alpha-LiIO3 crystal, the electrical conductivity and the dielectric characterization of the Mg(70ppm):alpha-LiIO3 crystal are enhanced significantly, but its piezoelectric coefficient d(33) decreases from 47 to 5.5 pC/N. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：424 / 427

页数：4

共 26 条

[1] STRUCTURE RELATIONSHIP TO DIELECTRIC, ELASTIC AND CHIRAL PROPERTIES [J].