Ferromagnetic insulating phase in Pr1-xCaxMnO3 -: art. no. 054433

被引：30

作者：

Kajimoto, R

Mochizuki, H

Yoshizawa, H

Okamoto, S

Ishihara, S

机构：

[1] Ochanomizu Univ, Dept Phys, Bunkyo Ku, Tokyo 1128610, Japan

[2] Univ Tokyo, Neutron Sci Lab, Inst Solid State Phys, Ibaraki 3191106, Japan

[3] RIKEN, Inst Phys & Chem Res, Saitama 3510198, Japan

[4] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

来源：

PHYSICAL REVIEW B | 2004年 / 69卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.69.054433

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A ferromagnetic insulating (FM-I) state in Pr0.75Ca0.25MnO3 has been studied by neutron scattering experiment and theoretical calculation. The insulating behavior is robust against an external magnetic field, and is ascribed to neither the phase separation between a ferromagnetic metallic (FM-M) phase and a nonferromagnetic insulating one, nor the charge ordering. We found that the Jahn-Teller type lattice distortion is much weaker than PrMnO3 and the magnetic interaction is almost isotropic. These features resemble the ferromagnetic metallic state of manganites, but the spin exchange interaction J is much reduced compared to the FM-M state. The theoretical calculation based on the staggered type orbital order well reproduces several features of the spin and orbital state in the FM-I phase.

引用

收藏

页数：10

相关论文

共 38 条

[1] Charge ordering and polaron formation in the magnetoresistive oxide La0.7Ca0.3MnO3 [J].

Adams, CP ;

Lynn, JW ;

Mukovskii, YM ;

Arsenov, AA ;

Shulyatev, DA .

PHYSICAL REVIEW LETTERS, 2000, 85 (18) :3954-3957

[2] Structural changes, clustering, and photoinduced phase segregation in Pr0.7Ca0.3MnO3 [J].

Cox, DE ;

Radaelli, PG ;

Marezio, M ;

Cheong, SW .

PHYSICAL REVIEW B, 1998, 57 (06) :3305-3314

[3] Short-range polaron correlations in the ferromagnetic La1-xCaxMnO3 [J].

Dai, PC ;

Fernandez-Baca, JA ;

Wakabayashi, N ;

Plummer, EW ;

Tomioka, Y ;

Tokura, Y .

PHYSICAL REVIEW LETTERS, 2000, 85 (12) :2553-2556

[4] Magnetic coupling in the insulating and metallic ferromagnetic La1-xCaxMnO3 [J].

Dai, PC ;

Fernandez-Baca, JA ;

Plummer, EW ;

Tomioka, Y ;

Tokura, Y .

PHYSICAL REVIEW B, 2001, 64 (22)

[5] EFFECTS OF DOUBLE EXCHANGE IN MAGNETIC CRYSTALS [J].

DEGENNES, PG .

PHYSICAL REVIEW, 1960, 118 (01) :141-154

[6] Two ferromagnetic transitions in Pr0.8Ca0.2MnO3 [J].

Dho, J ;

Chi, EO ;

Hur, NH ;

Lee, KW ;

Oh, HS ;

Choi, YN .

SOLID STATE COMMUNICATIONS, 2002, 123 (10) :441-444

[7] Scaling of spin-wave stiffness constant to Curie temperature in the colossal magnetoresistance material La1-xSrxMnO3 [J].

Endoh, Y ;

Hirota, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1997, 66 (08) :2264-2267

[8] Transition between two ferromagnetic states driven by orbital ordering in La0.88Sr0.12MnO3 [J].

Endoh, Y ;

Hirota, K ;

Ishihara, S ;

Okamoto, S ;

Murakami, Y ;

Nishizawa, A ;

Fukuda, T ;

Kimura, H ;

Nojiri, H ;

Kaneko, K ;

Maekawa, S .

PHYSICAL REVIEW LETTERS, 1999, 82 (21) :4328-4331

[9] Microscopic spin interactions in colossal magnetoresistance manganites [J].

Fernandez-Baca, JA ;

Dai, PC ;

Kawano-Furukawa, H ;

Yoshizawa, H ;

Plummer, EW ;

Katano, S ;

Tomioka, Y ;

Tokura, Y .

PHYSICAL REVIEW B, 2002, 66 (05) :544341-544345

[10] Two-dimensional planar ferromagnetic coupling in LaMnO3 [J].

Hirota, K ;

Kaneko, N ;

Nishizawa, A ;

Endoh, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1996, 65 (12) :3736-3739

← 1 2 3 4 →