High-pressure synthesis and superconductivity of LaGe5 containing a tunnel germanium network
Physical Review B - Condensed Matter and Materials Physics 67 巻 9 号
945011- 頁
2003-03-01 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
High-pressure synthesis and superconductivity of LaGe5 containing a tunnel germanium network
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| 作成者 | |
| 収録物名 |
Physical Review B - Condensed Matter and Materials Physics
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| 巻 | 67 |
| 号 | 9 |
| 開始ページ | 945011 |
| 抄録 |
Superconducting LaGe5 was synthesized by the reaction of La and Ge mixtures under a pressure of 5 GPa at 1200°C. It crystallized in the orthorhombic space group Immm (No. 71) with a=4.0290(6), b =6.307(1), and c=9.978(2) Å, V=253.54(6) Å3, and Z=2. Single-crystal studies revealed that LaGe5 had a germanium network with tunnels running along the a axis, where La atoms are located. There are two crystallographically different Ge sites in the structure La[(Gel)4(Ge2)1]. The tunnel network is composed of folded sp3-Gel layers coupled by eight coordinated Ge2 atoms. Electrical resistivity and magnetic-susceptibility measurements showed that the compound was a type-II superconductor with a transition temperature of 7.0 K.
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| NDC分類 |
物理学 [ 420 ]
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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 | 2003-03-01 |
| 権利情報 |
Copyright (c) 2003 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 |
[NCID] AA11187113
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.67.094501
[DOI] http://dx.doi.org/10.1103/PhysRevB.67.094501
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