Field-induced magnetic transition in the heavy-fermion antiferromagnet Ce7Ni3
Physical Review B - Condensed Matter and Materials Physics 67 巻 14 号
144408-1-144408-6 頁
2003-04-10 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Field-induced magnetic transition in the heavy-fermion antiferromagnet Ce7Ni3
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| 作成者 |
Echizen Yuji
Jung Myoung Hwa
Sakakibara Toshiro
Terashima Taichi
Terakura Chieko
Pfleiderer Christian
Uhlarz Marc
Löhneysen Hilbert Von
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| 収録物名 |
Physical Review B - Condensed Matter and Materials Physics
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| 巻 | 67 |
| 号 | 14 |
| 開始ページ | 144408-1 |
| 終了ページ | 144408-6 |
| 抄録 |
We present a detailed study of the field (B) - temperature (T) phase diagram of the heavy-fermion antiferromagnet Ce7Ni3 that crystallizes in the hexagonal Th7Fe3-type structure with three nonequivalent Ce sites (CeI, CeII, and CeIII). This compound undergoes two magnetic transitions at TN1 = 1.9 K and TN2 0.7 K in zero field. Below TN1, an incommensurate spin density wave (SDW) develops, and below TN2 a commensurate SDW appears independently. By applying fields along the c axis, both TN1 and TN2, are suppressed and vanish at 0.3 T. For B∥c > 0.7 T, however, another magnetic phase appears below 0.5 K, which was found by magnetoresistance, specific heat, and magnetization measurements. The separation of the field induced phase from the SDW phase is attributed to large spin fluctuations of CeIII, which originate from a geometrical frustration in the quasiregular tetrahedron made of CeI and CeIII.
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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 | 2003-04-10 |
| 権利情報 |
Copyright (c) 2003 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.67.144408
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.60.9532
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