SINGLE-CRYSTALS OF NEW RUDDLESDEN - POPPER PHASES (SRLA)3V2O7 AND SR4V3O9.7 - PREPARATION, CRYSTAL-STRUCTURE, AND ELECTRICAL-RESISTIVITY

被引：25

作者：

GONG, WH ^{[1
]}

XUE, JS ^{[1
]}

GREEDAN, JE ^{[1
]}

机构：

[1] MCMASTER UNIV,DEPT CHEM,HAMILTON L8S 4M1,ONTARIO,CANADA

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1991年 / 91卷 / 01期

关键词：

D O I：

10.1016/0022-4596(91)90072-P

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Single crystals of Sr1.5La1.5V2O7 (Sr3Ti2O7-type) and Sr4V3O9.7 (Sr4Ti3O10-type) have been grown by a melt method in molybdenum crucibles at high temperatures and from a strontium borate flux. Crystal structures have been refined from single crystal X-ray data. The crystals are large enough for resistivity measurements: Sr4V3O9.7 is metallic down to 4.2 K, while Sr1.5La1.5V2O7 is a semiconductor. A possible correlation exists between the observed electrical properties and the degree of distortion in the VO polyhedra. © 1991.

引用

页码：180 / 185

页数：6

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