Magnetic and transport properties of the electron doped layered manganite La2.3-xYxCa0.7Mn2O7

被引：6

作者：

Raychaudhuri, P ^{[1
]}

Nigam, AK ^{[1
]}

Mitra, C ^{[1
]}

Dhar, SK ^{[1
]}

Pinto, R ^{[1
]}

机构：

[1] Tata Inst Fundamental Res, Solid State Elect Grp, Bombay 400005, Maharashtra, India

来源：

PHYSICA B-CONDENSED MATTER | 1999年 / 259-61卷

关键词：

colossal magnetoresistance; metal-insulator transition; manganite;

D O I：

10.1016/S0921-4526(98)01058-8

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this paper we report the magnetic and transport properties of the layered perovskite compound La2.3-xYx Ca0.7Mn2O7 (x = 0, 0.3, 0.5) showing metal-insulator transition and ferromagnetism where the manganese ions are in a mixture of Mn2+ and Mn3+ states. The thermopower for the sample with x = 0.5 is positive over the temperature range 80-300 K suggesting that the e(g) conduction band is more than half filled. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：835 / 836

页数：2

共 5 条

[1] Giant magnetoresistance of a two-dimensional ferromagnet La2-2xCa1+2xMn2O7 [J].

Asano, H ;

Hayakawa, J ;

Matsui, M .

APPLIED PHYSICS LETTERS, 1996, 68 (25) :3638-3640

[2] Crystal and magnetic structures of the colossal magnetoresistance manganates Sr2-xNd1+xMn2O7 (x=0.0, 0.1) [J].

Battle, PD ;

Green, MA ;

Laskey, NS ;

Millburn, JE ;

Radaelli, PG ;

Rosseinsky, MJ ;

Sullivan, SP ;

Vente, JF .

PHYSICAL REVIEW B, 1996, 54 (22) :15967-15977

[3] Giant magnetoresistance of manganese oxides with a layered perovskite structure [J].

Moritomo, Y ;

Asamitsu, A ;

Kuwahara, H ;

Tokura, Y .

NATURE, 1996, 380 (6570) :141-144

[4] The metal-insulator transition and ferromagnetism in the electron-doped layered manganites La2.3-xYxCa0.7Mn2O7 (x = 0, 0.3, 0.5) [J].

Raychaudhuri, P ;

Mitra, C ;

Paramekanti, A ;

Pinto, R ;

Nigam, AK ;

Dhar, SK .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1998, 10 (12) :L191-L198

[5] INTERACTION BETWEEN THE D-SHELLS IN THE TRANSITION METALS .2. FERROMAGNETIC COMPOUNDS OF MANGANESE WITH PEROVSKITE STRUCTURE [J].

ZENER, C .

PHYSICAL REVIEW, 1951, 82 (03) :403-405

← 1 →