NDLI: Interplay between electronic transport and magnetic order in ferromagnetic magnetic manganite thin films

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Interplay between electronic transport and magnetic order in ferromagnetic magnetic manganite thin films

Content Provider	United States Department of Energy Office of Scientific and Technical Information (OSTI.GOV)
Author	Hundley, M. F. Neumeier, J. J. Heffner, R. H. Jia, Q. X. Wu, X. D. Thompson, J. D.
Organization	Los Alamos National Lab., NM (United States)
Abstract	The transition metal oxides La{sub 1{minus}x}A{sub x}MnO{sub 3} (A = Ba, Ca, or Sr) order ferromagnetically with Curie temperatures ranging from as low as 50 K to well above room temperature. Magnetic order in these compounds results in a concomitant metal-insulator transition. The feature displayed by the manganites that is most important technologically is the extremely large negative magnetoresistance that achieves its largest values near the magnetic ordering temperature. Qualitatively, this colossal magnetoresistance (CMR) phenomenon involves the suppression of the relatively sharp maximum in the resistivity that is centered at T{sub C}. When considered collectively, the anomalous temperature-dependent transport properties, the CMR effect, and the magnetically ordered ground state indicate that a novel interplay between magnetism and electronic transport occurs in the manganites. General features of the magnetic-field and temperature-dependent electrical resistivity and magnetization as displayed by PLD-grown thin films are examined. Particular emphasis is placed on what these measurements tell us about the conduction process both above and below the magnetic ordering temperature.
Sponsorship	USDOE Assistant Secretary for Human Resources and Administration, Washington, DC (United States)
Related Links	https://www.osti.gov/biblio/474948
Page Count	14
File Format	PDF
DOI	10.2172/474948
Language	English
Publisher Date	1997-05-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	MATERIALS SCIENCE LANTHANUM OXIDES BARIUM OXIDES CALCIUM OXIDES STRONTIUM OXIDES MANGANESE OXIDES ELECTRICAL PROPERTIES MAGNETIC PROPERTIES SEMICONDUCTOR MATERIALS FERROMAGNETIC MATERIALS EXPERIMENTAL DATA TEMPERATURE DEPENDENCE
Content Type	Text
Resource Type	Technical Report

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