Effect of internal pressure on charge-ordered rare earth manganates

被引：31

作者：

Rao, CNR ^{[1
]}

Santhosh, PN

Singh, RS

Arulraj, A

机构：

[1] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India

[2] Indian Inst Sci, CSIR, Ctr Excellence Chem, Bangalore 560012, Karnataka, India

[3] Jawaharlal Nehru Ctr Adv Sci Res, Chem & Phys Mat Unit, Bangalore 560064, Karnataka, India

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1998年 / 135卷 / 01期

关键词：

D O I：

10.1006/jssc.1997.7734

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The effect of internal pressure on charge-ordered rare earth manganates of the composition Ln(1-x)A(x)MnO(3) (Ln = La, Pr, Nd and A = Ca, Sr) has been studied by varying the average radius of the A site cations ([r(A)]). Increasing [r(A)] is generally accompanied by an increase in the ferromagnetic transition temperature and a decrease in the charge-ordering transition temperature. On increasing the size of the A site cations by appropriate substitution, charge-ordered insulators such as Pr0.7Ca0.3MnO3 and Nd0.5Ca0.5MnO3 become ferromagnetic, accompanied by an insulator-metal transition. In Pr0.5Sr0.5MnO3, substitution of La in place of Pr destroys the antiferromagnetic transition and favors the ferromagnetic metallic state. (C) 1998 Academic Press.

引用

页码：169 / 173

页数：5

共 14 条

[1]

ARULRAJ A, IN PRESS PHYS REV B

[2] LATTICE EFFECTS ON THE MAGNETORESISTANCE IN DOPED LAMNO3 [J].

HWANG, HY ;

CHEONG, SW ;

RADAELLI, PG ;

MAREZIO, M ;

BATLOGG, B .

PHYSICAL REVIEW LETTERS, 1995, 75 (05) :914-917

[3] Magnetic ordering and relation to the metal-insulator transition in Pr1-xSrxMnO3 and Nd1-xSrxMnO3 with x similar to 1/2 [J].

Kawano, H ;

Kajimoto, R ;

Yoshizawa, H ;

Tomioka, Y ;

Kuwahara, H ;

Tokura, Y .

PHYSICAL REVIEW LETTERS, 1997, 78 (22) :4253-4256

[4] The nature of charge ordering in rare earth manganates and its strong dependence on the size of the A-site cations [J].

Kumar, N ;

Rao, CNR .

JOURNAL OF SOLID STATE CHEMISTRY, 1997, 129 (02) :363-366

[5] A FIRST-ORDER PHASE-TRANSITION INDUCED BY A MAGNETIC-FIELD [J].

KUWAHARA, H ;

TOMIOKA, Y ;

ASAMITSU, A ;

MORITOMO, Y ;

TOKURA, Y .

SCIENCE, 1995, 270 (5238) :961-963

[6] INFLUENCE OF CHARGE AND MAGNETIC-ORDERING ON THE INSULATOR-METAL TRANSITION IN PR1-XCAXMNO3 [J].

LEES, MR ;

BARRATT, J ;

BALAKRISHNAN, G ;

PAUL, DMK ;

YETHIRAJ, M .

PHYSICAL REVIEW B, 1995, 52 (20) :14303-14307

[7] EFFECT OF THE INTERNAL-PRESSURE DUE TO THE A-SITE CATIONS ON THE GIANT MAGNETORESISTANCE AND RELATED PROPERTIES OF DOPED RARE-EARTH MANGANATES, LN(1-X)A(X)MNO(3) (LN=LA,ND,GD,Y, A=CA,SR,BA,PB) [J].

MAHESH, R ;

MAHENDIRAN, R ;

RAYCHAUDHURI, AK ;

RAO, CNR .

JOURNAL OF SOLID STATE CHEMISTRY, 1995, 120 (01) :204-207

[8] Pressure effects on charge-ordering transitions in Perovskite manganites [J].

Moritomo, Y ;

Kuwahara, H ;

Tomioka, Y ;

Tokura, Y .

PHYSICAL REVIEW B, 1997, 55 (12) :7549-7556

[9] Materials science - Charge ordering in manganates [J].

Rao, CNR ;

Cheetham, AK .

SCIENCE, 1997, 276 (5314) :911-912

[10] Giant magnetoresistance and related properties of rare-earth manganates and other oxide systems [J].

Rao, CNR ;

Cheetham, AK ;

Mahesh, R .

CHEMISTRY OF MATERIALS, 1996, 8 (10) :2421-2432

← 1 2 →