Neutron diffraction evidence for a new ferromagnetic phase in Cr doped Pr0.5Ca0.5MnO3

被引：70

作者：

Damay, F

Martin, C

Maignan, A

Hervieu, M

Raveau, B

Bourée, F

André, G

机构：

[1] Inst Sci Mat & Rayonnement, Lab CRISMAT, CNRS, UMR 6508, F-14050 Caen, France

[2] Univ Caen, F-14050 Caen, France

[3] Ctr Etud Saclay, Leon Brillouin Lab, F-91191 Gif Sur Yvette, France

来源：

APPLIED PHYSICS LETTERS | 1998年 / 73卷 / 25期

关键词：

D O I：

10.1063/1.122890

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Cr doping in Pr0.5Ca0.5MnO3 is known to destroy the low-temperature antiferromagnetic charge-ordered state and to induce a ferromagnetic component as well as colossal magnetoresistance properties. Effects of Cr doping on the magnetic and nuclear structures are studied here by neutron diffraction for Pr0.5Ca0.5Mn0.95Cr0.05O3. It is shown that, at low temperature, the. strongly distorted charge ordered structure usually observed in Pr0.5Ca0.5MnO3 is replaced by a ferromagnetic phase in which the basal-plane distortion of the MnO6 octahedra has disappeared, in agreement with the restoration of the double-exchange interactions. (C) 1998 American Institute of Physics. [S0003-6951(98)04951-1].

引用

页码：3772 / 3774

页数：3

共 16 条

[1] Extension of colossal magnetoresistance properties to small A site cations by chromium doping in Ln0.5Ca0.5MnO3 manganites [J].