Inhomogeneous Magnet NaMnIII[BP2O7(OH)(3)]: Ferromagnetic Clusters Inserted in a Metamagnetic Matrix
文献类型：期刊论文
| 作者 | Yang, Tao1; Zhang, Yan2; Lin, Jianhua1 |
| 刊名 | EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
 |
| 出版日期 | 2009-09-01 |
| 期号 | 25页码:3758-3764 |
| 关键词 | Manganese Magnetic Properties Inhomogeneity Cluster Glass |
| ISSN号 | 1434-1948 |
| DOI | 10.1002/ejic.200900387 |
| 英文摘要 | NaMnIII [BP2O7(OH)(3)] (1) has been hydrothermally synthesized and characterized by single-crystal X-ray diffraction. The manganese(III) cations are coordinated in a tetragonal-elongated octahedral environment, indicating the possible large magnetic anisotropy. The MnO6 octahedra are interconnected by BO4/PO4 groups, forming a 3D trichnic net of Mn-III backbone. Detailed dc and ac magnetic measurements have been conducted, and a preliminary H-T phase diagram is deduced accordingly. Compound 1 adopts an unusual magnetic inhomogeneous model, consisting of ferromagnetic clusters and a metamagnetic background: At the paramagnetic temperature region, the Curie-Weiss fit shows that the manganese atoms are all in the high spin state (S = 2), and the predominant interaction is ferromagnetic. An antiferromagnetic ground state forms at approximately 10 K, the isothermal magnetizations between 6.5 and 10 K show the typical metamagnetism. At approximately 6.5 K, a short-range ordering of the ferromagnetic cluster occurs. Below 3.5 K, the ferromagnetic clusters tend to be frozen at low external field, and the inhomogeneous magnetism can be clearly indicated by the isothermal magnetizations below 3 K. This unusual magnetism cannot be understood by the popular mechanism in doped manganese perovskites, which are well known to be magnetically inhomogeneous because of the mixed valence of manganese. In compound 1, one of the possible reasons for this unusual behaviour is the competition between magnetic superexchange interactions and the large magnetic anisotropy of Mn-III. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009) |
| 语种 | 英语 |
| WOS记录号 | WOS:000270072400010 |
| 出版者 | WILEY-BLACKWELL |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/68529]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Lin, Jianhua |
| 作者单位 | 1.Peking Univ, State Key Lab Rare Earth Mat Chem & Applicat, Beijing Natl Lab Mol Sci, Coll Chem & Mol Engn, Beijing 100871, Peoples R China 2.Peking Univ, Dept Phys, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Tao,Zhang, Yan,Lin, Jianhua. Inhomogeneous Magnet NaMnIII[BP2O7(OH)(3)]: Ferromagnetic Clusters Inserted in a Metamagnetic Matrix[J]. EUROPEAN JOURNAL OF INORGANIC CHEMISTRY,2009(25):3758-3764. |
| APA | Yang, Tao,Zhang, Yan,&Lin, Jianhua.(2009).Inhomogeneous Magnet NaMnIII[BP2O7(OH)(3)]: Ferromagnetic Clusters Inserted in a Metamagnetic Matrix.EUROPEAN JOURNAL OF INORGANIC CHEMISTRY(25),3758-3764. |
| MLA | Yang, Tao,et al."Inhomogeneous Magnet NaMnIII[BP2O7(OH)(3)]: Ferromagnetic Clusters Inserted in a Metamagnetic Matrix".EUROPEAN JOURNAL OF INORGANIC CHEMISTRY .25(2009):3758-3764. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。