Magnetotransport properties of La{sub 0.6}Pb{sub 0.4}MnO{sub 3{minus}{delta}} and Nd{sub 0.6}(Sr{sub 0.7}Pb{sub 0.3}){sub 0.4}MnO{sub 3{minus}{delta}} single crystals

Journal Article · Sun Oct 01 00:00:00 EDT 1995 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.52.9147· OSTI ID:250560

Jia, Y X; Lu, L; Khazeni, K; Crespi, V H; Zettl, A; Cohen, M L ^[1]

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1. Department of Physics, University of California at Berkeley, Berkeley, California 94720 (United States)

Magnetotransport measurements of high-quality single crystals of La{sub 0.6}Pb{sub 0.4}MnO{sub 3{minus}{delta}} and Nd{sub 0.6}(Sr{sub 0.7})(Pb{sub 0.3}){sub 0.4}MnO{sub 3{minus}{delta}} show a close relationship between giant magnetoresistance and the ferromagnetic ordering transition in these materials. In contrast to results for thin film and polycrystalline materials, magnetoresistance of these single crystals vanishes as {ital T}{r_arrow}0. A two-component polaron model provides a possible framework for the interpretation of the previously unexplained variation in the functional form of {rho}({ital H}) above and below the Curie temperature.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 250560
• Journal Information: Physical Review, B: Condensed Matter, Vol. 52, Issue 13; Other Information: PBD: 1 Oct 1995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
MANGANESE OXIDES
MAGNETORESISTANCE
LEAD OXIDES
LANTHANUM OXIDES
STRONTIUM OXIDES
NEODYMIUM OXIDES
MONOCRYSTALS
FERROMAGNETISM
POLARONS
MAGNETIC FIELDS
CURIE POINT