Structural distortions and charge/orbital ordering in Bi_0.25Ho_0.25Ca_0.5MnO₃

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• 作者：Krezhov ; K. ; Kovacheva ; D. ; Svab ; E. ; Bouré ; e ; F. ; Stamenov ; P.
• 关键词：61.12.Ld ; 71.30.+h ; 75.25.+z ; 75.30.Et ; 75.30.&minus ; m ; 75.47.Gk ; 75.47.Lx ; Charge-order ; Manganites ; Bismuth oxides ; Neutron diffraction
• 刊名：Physica B
• 出版年：2004
• 期刊代码：53_09214526
• 类别：ph
• 出版时间：July 15, 2004
• 卷：350
• 期：1-3, Supplement
• 页码：E13-E17
• 文件大小：497 K

摘要

The structure and magnetic arrangement in Bi_0.25Ho_0.25Ca_0.5MnO₃ have been studied by powder neutron diffraction. At room temperature, the compound is in paramagnetic phase of small monoclinic distortion allowing for structural description in orthorhombic Pnma symmetry. At 10K, the ground magnetic state was specified as CE-type antiferromagnetic.