Hysteresis behavior in transport measurements in CeFe sub 2 and its alloys with Co, Al, and Ru substitutions

Journal Article · Thu Nov 01 04:00:00 EST 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.42.8643· OSTI ID:6228902

Garde, C S; Ray, J; Chandra, G ^[1]

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1. Tata Institute of Fundamental Research, Homi Bhabha Road, Bombay 400005, Maharashtra (India)

We report resistivity ({rho}) and thermopower ({ital S}) measurements between 1.7 and 300 K on CeFe{sub 2}, Ce(Fe{sub 1{minus}{ital x}}Ru{sub {ital x}}){sub 2}, Ce(Fe{sub 0.96}Al{sub 0.04}){sub 2}, and Ce(Fe{sub 0.8}Co{sub 0.2}){sub 2} alloys. At low temperatures there is an abrupt loss of ferromagnetism for these impurity-substituted alloys, indicating that CeFe{sub 2} itself exists near a magnetic instability. Below 120 K, a marked hysteresis occurs near the temperature {ital T}{sub min}, where a minimum occurs both in the {rho} and {ital S} curves, which has not been reported so far. The range of this hysteresis, {delta}, is strongly related to the temperature range over which ferromagnetic and antiferromagnetic phases overlap in these alloys.

• OSTI ID: 6228902
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 42:13; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
ALUMINIUM ALLOYS
CERIUM ALLOYS
COBALT ALLOYS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HYSTERESIS
IRON ALLOYS
LOW TEMPERATURE
MAGNETIC PROPERTIES
MEDIUM TEMPERATURE
PHYSICAL PROPERTIES
PLATINUM METAL ALLOYS
RARE EARTH ALLOYS
RUTHENIUM ALLOYS
THERMOELECTRIC PROPERTIES
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE