Magnetotransport in the low carrier density ferromagnet EuB{sub 6}

Journal Article · Mon May 01 00:00:00 EDT 2000 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.372460· OSTI ID:20216243

Suellow, S ^[1]; Prasad, I ^[1]; Bogdanovich, S ^[1]; Aronson, M C ^[1]; Sarrao, J L ^[2]; Fisk, Z ^[2]

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1. Department of Physics, 2071 Randall Laboratory, University of Michigan, Ann Arbor, Michigan 48109-1120 (United States)
2. National High Magnetic Field Laboratory, 1800 E. Paul Dirac Drive, Florida State University, Tallahassee, Florida 32310 (United States)

We present a magnetotransport study of the low-carrier density ferromagnet EuB{sub 6}. This semimetallic compound, which undergoes two ferromagnetic transitions at T{sub l}=15.3 K and T{sub c}=12.5 K, exhibits close to T{sub l} a colossal magnetoresistivity (CMR). We quantitatively compare our data to recent theoretical work, which, however, fails to explain our observations. We attribute this disagreement with theory to the unique type of magnetic polaron formation in EuB{sub 6}. (c) 2000 American Institute of Physics.

• OSTI ID: 20216243
• Journal Information: Journal of Applied Physics, Vol. 87, Issue 9; Other Information: PBD: 1 May 2000; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
EUROPIUM BORIDES
FERROMAGNETIC MATERIALS
MAGNETORESISTANCE
ELECTRIC CONDUCTIVITY
CARRIER DENSITY
TEMPERATURE DEPENDENCE
EXPERIMENTAL DATA