Single-ion Kondo behaviour of Ce in a novel Kondo lattice, CeNi9Si4

The compound CeNi9Si4 has been recently reported to be an unusual Kondo lattice with a large Ce-Ce separation, with a breakdown of the Kadowaki-Woods relationship governing the low-temperature electrical resistivity and heat capacity. Here we report the results of magnetic susceptibility, heat capac...

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Bibliographic Details
Published inJournal of physics. Condensed matter Vol. 18; no. 8; pp. L115 - L121
Main Authors Sengupta, Kausik, Sampathkumaran, E V
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.03.2006
Institute of Physics
Subjects
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Magnetically ordered materials: other intrinsic properties
Physics
Valence fluctuation, kondo lattice, and heavy-fermion phenomena
Lanthanum alloys
Electrical conductivity
Nickel alloys
Magnetization
Cerium alloys
Magnetic susceptibility
Specific heat
Silicon alloys
Kondo effect
Solid solutions
Rare earth alloys
Chemical composition
Kondo lattice
Transition element alloys
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Summary:The compound CeNi9Si4 has been recently reported to be an unusual Kondo lattice with a large Ce-Ce separation, with a breakdown of the Kadowaki-Woods relationship governing the low-temperature electrical resistivity and heat capacity. Here we report the results of magnetic susceptibility, heat capacity and electrical resistivity of the solid solution Ce1 xLaxNi9Si4, to understand the Kondo behaviour of this compound. The results establish that the observed properties of Ce in this compound are single-ionic in character.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/18/8/L01