Enhanced stability of charge-order in underdoped Bi0.75Sr0.25MnO3

被引：27

作者：

Frontera, C

García-Muñoz, JL

Ritter, C

Mañosa, L

Capdevila, XG

Calleja, A

机构：

[1] CSIC, Inst Ciencia Mat Barcelona, Dept Magnet & Superconducting Mat, E-08193 Bellaterra, Spain

[2] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

[3] Univ Barcelona, Fac Fis, Dept Estructura & Constituents Mat, E-08028 Barcelona, Spain

[4] Univ Barcelona, Fac Quim, Dept Engn Quim & Met, E-08028 Barcelona, Spain

来源：

SOLID STATE COMMUNICATIONS | 2003年 / 125卷 / 05期

关键词：

electron-phonon interaction; heat capacity; X-ray scattering; Newton scattering;

D O I：

10.1016/S0038-1098(02)00660-9

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report that the charge-ordered phase of Bi0.75Sr0.25MnO3 presents a transition temperature T-CO similar or equal to600 K, well above the ordering temperature in half-doped Bi0.50Sr0.50MnO3 (T-CO similar or equal to 525 K). Magnetization, calorimetry, and neutron diffraction measurements evidence that, in underdoped Bi0.75Sr0.25MnO3, an off-stoichiometry corresponding to a Mn3+/Mn4+ ratio of 3 increases T-CO by similar to 75 K with respect to half-doping. This unusual feature confirms the active role of Bi in this family, the only known manganites presenting charge order well above room temperature. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：277 / 280

页数：4

共 21 条

[1] Structure determination of ferromagnetic perovskite BiMnO3
Atou, T
Chiba, H
Ohoyama, K
Yamaguchi, Y
Syono, Y
[J]. JOURNAL OF SOLID STATE CHEMISTRY, 1999, 145 (02) : 639 - 642
[2] Electrostatically driven charge-ordering in Fe2OBO3
Attfield, JP
Bell, AMT
Rodriguez-Martinez, LM
Greneche, JM
Cernik, RJ
Clarke, JF
Perkins, DA
[J]. NATURE, 1998, 396 (6712) : 655 - 658
[3] Up-scaling of superconductor powders by the acrylamide polymerization method
Calleja, A
Casas, X
Serradilla, IG
Segarra, M
Sin, A
Odier, P
Espiell, F
[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2002, 372 (372-376): : 1115 - 1118
[4] Magnetic and electrical properties of Bi1-xSrxMnO3: Hole-doping effect on ferromagnetic perovskite BiMnO3
Chiba, H
Atou, T
Syono, Y
[J]. JOURNAL OF SOLID STATE CHEMISTRY, 1997, 132 (01) : 139 - 143
[5] Zener polaron ordering in half-doped manganites -: art. no. 097205
Daoud-Aladine, A
Rodríguez-Carvajal, J
Pinsard-Gaudart, L
Fernández-Díaz, MT
Revcolevschi, A
[J]. PHYSICAL REVIEW LETTERS, 2002, 89 (09) : 972051 - 972054
[6] DAOUDALADINE A, 2002, IN PRESS APPL PHYS A
[7] DAOUDALADINE A, 2001, THESIS LAB LEON BRIL
[8] Low-temperature charge and magnetic order of Bi0.5Sr0.5MnO3 -: art. no. 054401
Frontera, C
García-Muñoz, JL
Aranda, MAG
Ritter, C
Llobet, A
Respaud, M
Vanacken, J
[J]. PHYSICAL REVIEW B, 2001, 64 (05)
[9] Room temperature charge and orbital ordering and phase coexistence in Bi0.5Sr0.5MnO3
Frontera, C
García-Muñoz, JL
Llobet, A
Aranda, MAG
Ritter, C
Respaud, M
Vanacken, J
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2001, 13 (05) : 1071 - 1078
[10] High-temperature orbital and charge ordering in Bi1/2Sr1/2MnO3 -: art. no. 064415
García-Muñoz, JL
Frontera, C
Aranda, MAG
Llobet, A
Ritter, C
[J]. PHYSICAL REVIEW B, 2001, 63 (06):

← 1 2 3 →