Determination of B-site ordering and structural transformations in the mixed transition metal perovskites La2CoMnO6 and La2NiMnO6

被引：302

作者：

Bull, CL

Gleeson, D

Knight, KS

机构：

[1] UCL Royal Inst Great Britain, Davy Faraday Res Labs, London W1S 4BS, England

[2] Rutherford Appleton Lab, ISIS Pulsed Neutron & Muon Source, Didcot OX11 0QX, Oxon, England

[3] Nat Hist Museum, Dept Mineral, London SW7 5BD, England

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2003年 / 15卷 / 29期

关键词：

D O I：

10.1088/0953-8984/15/29/304

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The low- and high-temperature structures of La2CoMnO6 and La2NiMnO6 have been refined using powder neutron diffraction. At low temperatures the materials adopt a charge-ordered monoclinic structure which transforms to a rhombohedral structure at elevated temperature without loss of charge ordering. This charge ordering scheme allows us for the first time to rationalize the relationships between the physical and structural properties of these materials.

引用

页码：4927 / 4936

页数：10

共 27 条

[1] Magnetic properties of REMe0.5Mn0.5O3 (RE = rare earth element, Me = Ni, Co) [J].