Cobaltites:: New materials with magnetoresistance properties

被引：6

作者：

Maignan, A

Motohashi, T

Hébert, S

Pelloquin, D

Raveau, B

机构：

[1] CAEN, CNRS, UMR 6508, ENS,Lab CRISMAT, F-14050 Caen 4, France

[2] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2006年 / 126卷 / 2-3期

关键词：

cobaltites; solid-state reaction; Seebeck measurements; magnetoresistance;

D O I：

10.1016/j.mseb.2005.09.029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Oxygen-deficient perovskite cobaltites Sr(1-x)A(x)CoO(3-delta') and SrCo1-yMyO3-delta' have been prepared by solid-state reaction. These compounds can be either ferromagnetic metals or magnetically disordered insulators. Magnetoresistance values in 7 T reach -5% near T-C and up to -17% at 5 K. These properties are discussed in the light of the e(g) character of the conduction band revealed by Seebeck measurements. (c) 2005 Elsevier B.V. All rights reserved.

引用

收藏

页码：296 / 299

页数：4

相关论文

共 11 条

[1] PREPARATION AND CHARACTERIZATION OF FULLY STOICHIOMETRIC SRCOO3 BY ELECTROCHEMICAL OXIDATION [J].

BEZDICKA, P ;

WATTIAUX, A ;

GRENIER, JC ;

POUCHARD, M ;

HAGENMULLER, P .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1993, 619 (01) :7-12

[2] Ferromagnetism and metallicity in the modulated Sr1-xThxCoO3-δ oxygen deficient perovskites with x≈0.1 [J].

Hébert, S ;

Maignan, A ;

Caignaert, V ;

Pralong, V ;

Pelloquin, D ;

Raveau, B .

SOLID STATE COMMUNICATIONS, 2005, 134 (12) :815-820

[3]

HEBERT S, IN PRESS

[4] Synthesis and characterization of Sr1-xLnxCoO3-δ, Ln = Y, Srn-Tm, 0.1≤x≤0.5 [J].

Istomin, SY ;

Drozhzhin, OA ;

Svensson, G ;

Antipov, EV .

SOLID STATE SCIENCES, 2004, 6 (06) :539-546

[5] Thermoelectric power of HoBaCo2O5.5:: Possible evidence of the spin blockade in cobaltites -: art. no. 026401 [J].

Maignan, A ;

Caignaert, V ;

Raveau, B ;

Khomskii, D ;

Sawatzky, G .

PHYSICAL REVIEW LETTERS, 2004, 93 (02) :026401-1

[6] Sr2/3Y1/3CoO8/3+δ:: Transition from insulating antiferromagnet to metallic ferromagnet by control of the oxygen content [J].

Maignan, A ;

Hébert, S ;

Caignaert, V ;

Pralong, V ;

Pelloquin, D .

JOURNAL OF SOLID STATE CHEMISTRY, 2005, 178 (03) :868-873

[7] Diluted magnetic interactions in an oxygen-deficient perovskite cobaltite:: magnetoresistance in the series SrCo1-xScxO3-δ (0<x≤0.5) [J].

Maignan, A ;

Pelloquin, D ;

Flahaut, D ;

Caignaert, V .

JOURNAL OF SOLID STATE CHEMISTRY, 2004, 177 (10) :3693-3699

[8] Competition between ferromagnetism and spin glass:: The key for large magnetoresistance in oxygen-deficient perovskites SrCo1-xMxO3-δ (M=Nb,Ru) -: art. no. 214424 [J].

Motohashi, T ;

Caignaert, V ;

Pralong, V ;

Hervieu, M ;

Maignan, A ;

Raveau, B .

PHYSICAL REVIEW B, 2005, 71 (21)

[9] Impact of niobium doping upon the magnetotransport properties of the oxygen-deficient perovskite SrCo1-xNbxO3-δ -: art. no. 192504 [J].

Motohashi, T ;

Caignaert, V ;

Pralong, V ;

Hervieu, M ;

Maignan, A ;

Raveau, B .

APPLIED PHYSICS LETTERS, 2005, 86 (19) :1-3

[10] MAGNETIC AND TRANSPORT-PROPERTIES OF THE SYSTEM LA1-XSRXCOO3-DELTA (0-LESS-THAN-X-LESS-THAN-OR-EQUAL-TO-0.50) [J].

SENARISRODRIGUEZ, MA ;

GOODENOUGH, JB .

JOURNAL OF SOLID STATE CHEMISTRY, 1995, 118 (02) :323-336