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

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.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Assistant Secretary for Human Resources and Administration, Washington, DC (United States)
OSTI Identifier:
474948
Report Number(s):
LA-UR-97-984; CONF-970302-3
ON: DE97005024; TRN: AHC29711%%118
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Technical Report
Resource Relation:
Conference: Spring meeting of the Materials Research Society, San Francisco, CA (United States), 31 Mar - 4 Apr 1997; Other Information: PBD: [1997]
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; LANTHANUM OXIDES; BARIUM OXIDES; CALCIUM OXIDES; STRONTIUM OXIDES; MANGANESE OXIDES; ELECTRICAL PROPERTIES; MAGNETIC PROPERTIES; SEMICONDUCTOR MATERIALS; FERROMAGNETIC MATERIALS; EXPERIMENTAL DATA; TEMPERATURE DEPENDENCE

Citation Formats

Hundley, M F, Neumeier, J J, Heffner, R H, Jia, Q X, Wu, X D, and Thompson, J D. Interplay between electronic transport and magnetic order in ferromagnetic magnetic manganite thin films. United States: N. p., 1997. Web. doi:10.2172/474948.
Hundley, M F, Neumeier, J J, Heffner, R H, Jia, Q X, Wu, X D, & Thompson, J D. Interplay between electronic transport and magnetic order in ferromagnetic magnetic manganite thin films. United States. https://doi.org/10.2172/474948
Hundley, M F, Neumeier, J J, Heffner, R H, Jia, Q X, Wu, X D, and Thompson, J D. 1997. "Interplay between electronic transport and magnetic order in ferromagnetic magnetic manganite thin films". United States. https://doi.org/10.2172/474948. https://www.osti.gov/servlets/purl/474948.
@article{osti_474948,
title = {Interplay between electronic transport and magnetic order in ferromagnetic magnetic manganite thin films},
author = {Hundley, M F and Neumeier, J J and Heffner, R H and Jia, Q X and Wu, X D and Thompson, J D},
abstractNote = {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.},
doi = {10.2172/474948},
url = {https://www.osti.gov/biblio/474948}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu May 01 00:00:00 EDT 1997},
month = {Thu May 01 00:00:00 EDT 1997}
}