Valence, spin, and orbital state of Co ions in one-dimensional Ca3Co2O6 : An x-ray absorption and magnetic circular dichroism study
Physical Review B 74 巻 24 号
245111-1-245111-5 頁
2006-12-14 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Valence, spin, and orbital state of Co ions in one-dimensional Ca3Co2O6 : An x-ray absorption and magnetic circular dichroism study
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| 作成者 |
Burnus Tobias
Hu Zhiwei
Haverkort Maurits W.
Cezar Júlio C.
Flahaut Delphine
Hardy Vincent
Maignan Antoine
Brookes Nicholas B.
Hsieh Hui-Huang
Lin Hong-Ji
Chen Chien-Te
Tjeng L. Hao
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| 収録物名 |
Physical Review B
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| 巻 | 74 |
| 号 | 24 |
| 開始ページ | 245111-1 |
| 終了ページ | 245111-5 |
| 抄録 |
We have investigated the valence, spin, and orbital state of the Co ions in the one-dimensional cobaltate Ca3 Co2 O6 using x-ray absorption and x-ray magnetic circular dichroism at the Co- L2,3 edges. The Co ions at both the octahedral Cooct and trigonal Cotrig sites are found to be in a 3+ state. From the analysis of the dichroism we established a low-spin state for the Cooct and a high-spin state with an anomalously large orbital moment of 1.7 μB at the Cotrig 3+ ions. This large orbital moment along the c -axis chain and the unusually large magnetocrystalline anisotropy can be traced back to the double occupancy of the d2 orbital in trigonal crystal field.
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
American Physical Society
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| 発行日 | 2006-12-14 |
| 権利情報 |
Copyright (c) 2006 The American Physical Society.
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| 出版タイプ | Version of Record（出版社版。早期公開を含む） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.74.245111
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.74.245111
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