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arXiv 0903.4945cond-mat.str-el
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Fe3BO5磁结构和电荷有序

Magnetic structure and charge ordering in Fe3BO5 ludwigite

Pierre Bordet, Emmanuelle Suard

摘要:

用X射线单晶衍射和中子粉末衍射研究了三脚梯形化合物Fe_3BO_5的晶体结构和磁性。Fe3BO5包含两种类型的三腿自旋梯。在283 K出现电荷有序转变,112 K出现反铁磁转变,70 K以下出现铁磁性,40 K以下出现弱铁磁性。X射线数据揭示了一个平稳的电荷有序和一个不完整的电荷本地化下降到110 K。低于第一个磁转变,第一种类型的阶梯顺序作为铁磁耦合的反铁磁链,而低于70 K的第二种类型的阶梯顺序作为反铁磁耦合的铁磁链。

英文摘要:

The crystal and magnetic structures of the three-leg ladder compound Fe3BO5 have been investigated by single crystal x-ray diffraction and neutron powder diffraction. Fe3BO5 contains two types of three-leg spin ladders. It shows a charge ordering transition at 283 K, an antiferromagnetic transition at 112 K, ferromagnetism below 70 K and a weak ferromagnetic behavior below 40K. The x-ray data reveal a smooth charge ordering and an incomplete charge localization down to 110K. Below the first magnetic transition, the first type of ladders orders as ferromagnetically coupled antiferromagnetic chains, while below 70K the second type of ladders orders as antiferromagnetically coupled ferromagnetic chains.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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