ANNEALING EFFECTS ON TRANSPORT AND MAGNETIC-PROPERTIES OF PEROVSKITE-TYPE VANADIUM-OXIDE CAVO3

被引：36
作者：
FUKUSHIMA, A
IGA, F
INOUE, IH
MURATA, K
NISHIHARA, Y
机构：
[1] Electrotechnical Laboratory, Umezono
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1994年 / 63卷 / 02期
关键词：
CAVO3; RESISTIVITY; NEGATIVE MAGNETORESISTANCE; SUSCEPTIBILITY;
D O I：
10.1143/JPSJ.63.409
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report transport and magnetic properties for single-crystalline CaVO3, which are seriously affected by oxygen off-stoichiometry. The electrical resistivity of a stoichiometric sample is well fit by the relation rho-rho0+AT2 in an extremely wide temperature range. Oxygen off-stoichiometry causes the systematic increment of both rho0 and A. Magnetoresistance data also change drastically due to the oxygen off-stoichiometry; the stoichiometric sample shows positive magnetoresistance with B2 dependence, while a sample with a small number of oxygen vacancies shows an unusual negative magnetoresistance. Magnetic susceptibility of the latter sample shows Curie-Weiss behavior, while that of the former one shows Pauli paramagnetic behavior.
引用
收藏
页码：409 / 412
页数：4
相关论文
共 9 条
[1]   ALKALINE-EARTH VANADIUM (IV) OXIDES HAVING AVO3 COMPOSITION [J].
CHAMBERL.BL ;
DANIELSO.PS .
JOURNAL OF SOLID STATE CHEMISTRY, 1971, 3 (02) :243-&
[2]  
FUKUSHIMA A, 1993, 20TH P INT C LOW TEM
[3]   METAL-INSULATOR-TRANSITION WITH OXYGEN-CONTENT IN CAVO(3-Y) [J].
IGA, F ;
NISHIHARA, Y .
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1992, 61 (06) :1867-1870
[4]   HEAT-CAPACITY AND NMR-STUDIES ON ELECTRON CORRELATIONS IN CA1-XYXVO3 AND SR1-XLAXTIO3 [J].
KUMAGAI, K ;
KAWANO, K ;
SUZUKI, T ;
TAKAHASHI, H ;
KASUYA, M ;
FUJISHIMA, Y ;
TAGUCHI, Y ;
OKADA, Y ;
TOKURA, Y .
PHYSICA B-CONDENSED MATTER, 1993, 186-88 :1030-1033
[5]   PHASE-DIAGRAM OF LATIOX - FROM 2D LAYERED FERROELECTRIC INSULATOR TO 3D WEAK FERROMAGNETIC SEMICONDUCTOR [J].
LICHTENBERG, F ;
WIDMER, D ;
BEDNORZ, JG ;
WILLIAMS, T ;
RELLER, A .
ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1991, 82 (02) :211-216
[6]   RELATION BETWEEN RESISTIVITY AND EFFECTIVE MASS IN HEAVY-FERMION AND A15 COMPOUNDS [J].
MIYAKE, K ;
MATSUURA, T ;
VARMA, CM .
SOLID STATE COMMUNICATIONS, 1989, 71 (12) :1149-1153
[7]  
MORIKAWA K, 1993, 20TH P INT C LOW TEM
[8]  
NISHIHARA H, 1993, 20TH P INT C LOW TEM
[9]   FILLING DEPENDENCE OF ELECTRONIC-PROPERTIES ON THE VERGE OF METAL MOTT-INSULATOR TRANSITIONS IN SR1-XLAXTIO3 [J].
TOKURA, Y ;
TAGUCHI, Y ;
OKADA, Y ;
FUJISHIMA, Y ;
ARIMA, T ;
KUMAGAI, K ;
IYE, Y .
PHYSICAL REVIEW LETTERS, 1993, 70 (14) :2126-2129
1