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Evolution of heavy-fermion behavior from mixed-valence state in the series Ce(Pt/sub 1-//sub x/Ni/sub x/)Si

Journal Article · · Phys. Rev. B: Condens. Matter; (United States)
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We present the room-temperature lattice parameters, the static magnetic susceptibility, and the magnetic resistivity between 2.4 and 300 K for a series of 10 polycrystalline Ce(Pt/sub 1-//sub x/Ni/sub x/)Si samples with x = 0.0 to 1.0. An abrupt change in the lattice constant as well as in T/sub max/(chi/sub m/) and T/sub max/(rho/sub m/) occurs around x = 0.5. This is evidence for the transition from heavy-fermion behavior to a mixed-valence state. The magnetic susceptibility and magnetic resistivity data support the interpretation of resistivity maximum in terms of a spin-scattering mechanism in the mixed-valence regime, while the Kondo scattering mechanism is expected to be valid at high temperature (T>T/sub SF/) in the Kondo-lattice regime. From the present study, the heavy-fermion material is believed to be a Kondo-lattice compound with a relatively strong Ruckerman-Kittel-Kasuya-Yotida interaction.
Research Organization:
Ames Laboratory and Department of Physics, Iowa State University, Ames, Iowa 50011
OSTI ID:
6039369
Journal Information:
Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 36:10; ISSN PRBMD
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
CERIUM COMPOUNDS
CERIUM SILICIDES
CRYSTALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
KONDO EFFECT
LATTICE PARAMETERS
LOW TEMPERATURE
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETORESISTANCE
MEDIUM TEMPERATURE
NICKEL COMPOUNDS
NICKEL SILICIDES
PHYSICAL PROPERTIES
PLATINUM COMPOUNDS
PLATINUM SILICIDES
POLYCRYSTALS
QUANTITY RATIO
RARE EARTH COMPOUNDS
SILICIDES
SILICON COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE