METAL-INSULATOR-TRANSITION IN NEARLY STOICHIOMETRIC CAVO3

被引：10

作者：

INOUE, IH

MORIKAWA, K

FUKUCHI, H

TSUJII, T

IGA, F

NISHIHARA, Y

机构：

[1] PERKIN ELMER JAPAN CO LTD,APPLICAT LAB,YOKOHAMA,KANAGAWA 220,JAPAN

[2] UNIV TOKYO,SCH PHYS,BUNKYO KU,TOKYO 113,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1993年 / 32卷

关键词：

CAVO3; METAL-INSULATOR TRANSITION; OXYGEN OFF-STOICHIOMETRY;

D O I：

10.7567/JJAPS.32S3.451

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A metal-to-insulator (MI) transition in perovskite-type vanadium oxide CaVO(y) in the vicinity of oxygen stoichiometry is reported. In spite of good metallic conductivity for stoichiometric CaVO(y) (y = 3.00), very slight oxidation (y congruent-to 3.05) causes the system to be insulating but does not induce any significant structural changes. This type of MI transition is contrary to that reported on another d1 system LaTiO(y), which is a Mott-Hubbard insulator for y = 3.00 but becomes metallic by oxidation. We suggest that in CaVO(y), extra oxygens primarily induce additional scattering which causes the metallic CaVO3 to be insulating.

引用

页码：451 / 452

页数：2

共 5 条

[1]

FUKUSHIMA A, UNPUB

[2]

Hiroi Z, COMMUNICATION

[3] METAL-INSULATOR-TRANSITION WITH OXYGEN-CONTENT IN CAVO(3-Y) [J].