High-pressure synthesis and superconductivity of LaGe5 containing a tunnel germanium network
Physical Review B - Condensed Matter and Materials Physics Volume 67 Issue 9
Page 945011-
published_at 2003-03-01
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| File | |
| Title ( eng ) |
High-pressure synthesis and superconductivity of LaGe5 containing a tunnel germanium network
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| Creator | |
| Source Title |
Physical Review B - Condensed Matter and Materials Physics
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| Volume | 67 |
| Issue | 9 |
| Start Page | 945011 |
| Abstract |
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 |
Physics [ 420 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 2003-03-01 |
| Rights |
Copyright (c) 2003 American Physical Society
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[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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