Spin-reorientation transition at isoelectronic substitution in double-layer manganites (La1-zPrz)1.2Sr1.8Mn2O7

被引：3

作者：

Vasil'ev, A ^{[1
]}

Voloshok, T

Apostu, M

Suryanarayanan, R

Revcolevschi, A

机构：

[1] Moscow MV Lomonosov State Univ, Moscow 119899, Russia

[2] Univ Paris 11, F-91405 Orsay, France

来源：

JETP LETTERS | 2001年 / 73卷 / 11期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/1.1392427

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The transport, magnetic, and thermal properties of single crystal double-layer manganites of the Ruddlesden-Popper series (La1-zPrz)(1.2)Sr1.8Mn2O7(z = 0.1 or 0.4) were studied. The compounds exhibit the colossal negative magnetoresistance effect in the region of a transition into a ferromagnetic state. Upon the isoelectronic substitution of Pr3+ for La3+, the Curie temperature decreases, while the easy magnetization axis rotates from the ab plane to the c axis. The observed effect is related to a change in the occupancy of d(x)(-y)(2)(2) and d(3z)(-r)(2)(2) orbitals as a result of stretching of the MnO6 octahedra. (C) 2001 MAIK "Nauka/Interperiodica".

引用

页码：630 / 632

页数：3

共 8 条

[1] Interrelation between orbital polarization and magnetic structure in bilayer manganites [J].

Akimoto, T ;

Moritomo, Y ;

Ohoyama, K ;

Okamoto, S ;

Ishihara, S ;

Maekawa, S ;

Nakamura, A .

PHYSICAL REVIEW B, 1999, 59 (22) :14153-14156

[2] Specific heat and high-temperature series of lattice models: Interpolation scheme and examples on quantum spin systems in one and two dimensions [J].

Bernu, B ;

Misguich, G .

PHYSICAL REVIEW B, 2001, 63 (13)

[3] Interplay between spin, charge and orbital degrees of freedom in magnetic oxides [J].

Khomskii, DI ;

Sawatzky, GA .

SOLID STATE COMMUNICATIONS, 1997, 102 (2-3) :87-99

[4] Anisotropic magnetoelastic phenomena in layered manganite crystals: Implication of change in orbital state [J].

Kimura, T ;

Tomioka, Y ;

Asamitsu, A ;

Tokura, Y .

PHYSICAL REVIEW LETTERS, 1998, 81 (26) :5920-5923

[5] 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

[6] Anomalous lattice distortion in Pr-substituted double-layered perovskite manganite La1.2Sr1.8Mn2O7 single crystals [J].

Ogasawara, H ;

Matsukawa, M ;

Hatakeyama, S ;

Yoshizawa, M ;

Apostu, M ;

Suryanarayanan, R ;

Dhalenne, G ;

Revcolevschi, A ;

Itoh, K ;

Kobayashi, N .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2000, 69 (05) :1274-1277

[7]

RAO CNR, 1998, COLOSSAL MAGNETORESI

[8] THE COMPOUND SR3TI2O7 AND ITS STRUCTURE [J].

RUDDLESDEN, SN ;

POPPER, P .

ACTA CRYSTALLOGRAPHICA, 1958, 11 (01) :54-55

← 1 →