Microstructure related to charge and orbital ordering in Pr0.5Ca0.5MnO3

被引：57

作者：

Mori, S ^{[1
]}

Katsufuji, T

Yamamoto, N

Chen, CH

Cheong, SW

机构：

[1] AT&T Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA

[2] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan

来源：

PHYSICAL REVIEW B | 1999年 / 59卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.59.13573

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated the microstructure related to the charge and orbital ordering in the manganites Pr0.5Ca0.5MnO3 by transmission electron microscopy. Electron diffraction clearly shows the presence of the incommensurate structure in the paramagnetic insulator phase of Pr0.5Ca0.5MnO3 between 180 and 260 K. Our experimental results clearly show that the incommensurate-to-commensurate (IC-to-C) charge-ordering transition was correspondent with the paramagnetic to antiferromagnetic transition around 180 K. Dark field images also revealed the motion of the discommensurations during the IC-to-C transition. A model of the IC structure which involves the presence of the partial orbital disordering and the complete charge ordering is proposed.

引用

页码：13573 / 13576

页数：4

共 19 条

[11] STRUCTURAL STUDY OF PR1-XCAXMNO3 AND Y1-XCAXMNO3 PEROVSKITES [J].

POLLERT, E ;

KRUPICKA, S ;

KUZMICOVA, E .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1982, 43 (12) :1137-1145

[12] Charge, orbital, and magnetic ordering in La0.5Ca0.5MnO3 [J].

Radaelli, PG ;

Cox, DE ;

Marezio, M ;

Cheong, SW .

PHYSICAL REVIEW B, 1997, 55 (05) :3015-3023

[13] GIANT MAGNETOTRANSPORT PHENOMENA IN FILLING-CONTROLLED KONDO-LATTICE SYSTEM - LA1-XSRXMNO3 [J].

TOKURA, Y ;

URUSHIBARA, A ;

MORITOMO, Y ;

ARIMA, T ;

ASAMITSU, A ;

KIDO, G ;

FURUKAWA, N .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1994, 63 (11) :3931-3935

[14] Magnetic-field-induced metal-insulator phenomena in Pr1-xCaxMnO3 with controlled charge-ordering instability [J].

Tomioka, Y ;

Asamitsu, A ;

Kuwahara, H ;

Moritomo, Y ;

Tokura, Y .

PHYSICAL REVIEW B, 1996, 53 (04) :R1689-R1692

[15] ANOMALOUS MAGNETOTRANSPORT PROPERTIES OF PR1-XCAXMNO3 [J].

TOMIOKA, Y ;

ASAMITSU, A ;

MORITOMO, Y ;

TOKURA, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1995, 64 (10) :3626-3630

[16] INSULATOR-METAL TRANSITION AND GIANT MAGNETORESISTANCE IN LA1-XSRXMNO3 [J].

URUSHIBARA, A ;

MORITOMO, Y ;

ARIMA, T ;

ASAMITSU, A ;

KIDO, G ;

TOKURA, Y .

PHYSICAL REVIEW B, 1995, 51 (20) :14103-14109

[17] INCOMMENSURATE-COMMENSURATE PHASE-TRANSITION OF BAZNGEO4 STUDIED BY ELECTRON-MICROSCOPY AND DIFFRACTION [J].

YAMAMOTO, N ;

KIKUCHI, M ;

ATAKE, T ;

HAMANO, A ;

SAITO, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1992, 61 (09) :3178-3188

[18] NEUTRON-DIFFRACTION STUDY OF THE MAGNETIC-FIELD-INDUCED METAL-INSULATOR-TRANSITION IN PR0.7CA0.3MNO3 [J].

YOSHIZAWA, H ;

KAWANO, H ;

TOMIOKA, Y ;

TOKURA, Y .

PHYSICAL REVIEW B, 1995, 52 (18) :13145-13148

[19] Direct imaging of charge modulation [J].

Zhu, YM ;

Tafto, J .

PHYSICAL REVIEW LETTERS, 1996, 76 (03) :443-446

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