| Study of exchange interaction of Ni2+ pairs in MgO : Ni2+, KMgF3 : Ni2+ and KNiF3 crystals |
| X. Y. Kuang; K. W. Zhou
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| 2001
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| 发表期刊 | Physica B-Condensed Matter
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| ISSN | 0921-4526
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| 卷号 | 305期号:2页码:169-174 |
| 摘要 | The exchange interactions of the Ni2+ pairs in MgO : Ni2+ KMgF3 : Ni2+ and KNiF3 systems have been studied based on the Girerd-Journaux-Kahn (GJK) model and the Heitler-London (HL) model, respectively, and by use of a double Slater-type radial wave function and an effective potential, which are constructed in terms of the spectral calculation. For the Ni-Ni distance R in the range 3.2 Angstrom < R < 4.8 Angstrom, the values of the exchange interaction parameter J calculated based on the GJK model are greater by a factor 2 than those based on the HL model. The calculated results give a reasonable explanation for the magnetic structure of the three systems and show that:(i) the kinetic exchange interaction is notably important, (ii) the antiferromagnetic effect is governed by both the direct exchange and the superexchange mechanisms, and (iii) the GJK model is suitable for describing the Ni-Ni exchange interactions in the three systems. (C) 2001 Elsevier Science B.V. All rights reserved. |
| 部门归属 | sichuan univ, inst atom & mol phys, chengdu 610065, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china. sichuan univ, dept phys, chengdu 610064, peoples r china. ccast, world lab, beijing 100080, peoples r china.;kuang, xy (reprint author), sichuan univ, inst atom & mol phys, chengdu 610065, peoples r china
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| 关键词 | Exchange Interactions
Ni2++ Pairs
Mgo : Ni2++
Kmgf3
Ni2++
Knif3
Complexes
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| URL | 查看原文
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| WOS记录号 | WOS:000171579700011
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/36689
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
X. Y. Kuang,K. W. Zhou. Study of exchange interaction of Ni2+ pairs in MgO : Ni2+, KMgF3 : Ni2+ and KNiF3 crystals[J]. Physica B-Condensed Matter,2001,305(2):169-174.
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| APA |
X. Y. Kuang,&K. W. Zhou.(2001).Study of exchange interaction of Ni2+ pairs in MgO : Ni2+, KMgF3 : Ni2+ and KNiF3 crystals.Physica B-Condensed Matter,305(2),169-174.
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| MLA |
X. Y. Kuang,et al."Study of exchange interaction of Ni2+ pairs in MgO : Ni2+, KMgF3 : Ni2+ and KNiF3 crystals".Physica B-Condensed Matter 305.2(2001):169-174.
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