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  Chemical physics of metallic clathrates with low carrier concentration

Steglich, F., Bentien, A., Baenitz, M., Carrillo-Cabrera, W., Grosche, F. M., Langhammer, C., et al. (2002). Chemical physics of metallic clathrates with low carrier concentration. Physica B, 318(1), 97-105. doi:10.1016/S0921-4526(02)00781-0.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-315B-B Version Permalink: http://hdl.handle.net/21.11116/0000-0000-3C87-5
Genre: Journal Article

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 Creators:
Steglich, F.1, Author              
Bentien, A.2, Author              
Baenitz, M.3, Author              
Carrillo-Cabrera, W.4, Author              
Grosche, F. M.2, Author              
Langhammer, C.2, Author              
Paschen, S.2, Author              
Sparn, G.2, Author              
Tran, V. H.2, Author              
Yuan, H. Q.2, Author              
Grin, Y.5, Author              
Affiliations:
1Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863467              
2Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
3Michael Baenitz, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863471              
4Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              
5Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863413              

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Free keywords: clathrates; bad metal; Ba6Ge25; Eu8Ga16Ge30; new materials
 Abstract: We discuss physical properties of two metallic clathrate compounds with low carrier concentration: Eu8Ga16Ge30, the first clathrate known to date, for which the 'guest' sites are fully occupied by 'rattling' lanthanide ions, and Ba6Ge25. Eu(8)Ga(16)G(30) exists in two modifications which both contain divalent Eu ions and order ferromagnetically at low temperatures (T-C = 10.5 K and 36 K, respectively). In Ba6Ge25 some of the 'rattling' Ba atoms lock, perhaps randomly, into split positions near 200 K. A BCS-like superconducting phase transition takes place at T-c = 0.14 K. T-c increases almost 20-fold, as the structural distortion is suppressed under hydrostatic pressure. (C) 2002 Elsevier Science B.V. All rights reserved.

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Language(s): eng - English
 Dates: 2002-05
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 18511
ISI: 000176459400017
DOI: 10.1016/S0921-4526(02)00781-0
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Title: Physica B
  Alternative Title : Physica B
Source Genre: Journal
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Pages: - Volume / Issue: 318 (1) Sequence Number: - Start / End Page: 97 - 105 Identifier: ISSN: 0921-4526