DOI: 10.1063/1.112808. Giant magnetoresistance in La1−xSrxMnOz films near room temperature

Giant magnetoresistance in La1−xSrxMnOz films near room temperature

10.1063/1.112808

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

We report the observation of giant magnetoresistance near room temperature in ferromagnetic films of La1−xSrxMnOz for 0.16≤x≤0.33. For B=5 T, the maximum magnetoresistance ratio [R(0)−R(B)]/R(0) of an annealed film is 60% at 260 K for x=0.2, and 35% at 330 K for x=0.33. Annealed films have higher Curie temperature (Tc), a larger saturation moment and a larger magnetoresistance effect near Tc than do as-grown films. The temperature dependence of resistivity for all the samples investigated is unusual, activated above Tc and metallic below Tc. This and the giant magnetoresistance are possibly explained by scattering from magnetic polarons which dominate the transport near Tc.

Bibliography

Ju, H. L., Kwon, C., Li, Q., Greene, R. L., & Venkatesan, T. (1994). Giant magnetoresistance in La1âxSrxMnOz films near room temperature. Applied Physics Letters, 65(16), 2108â2110.

Authors 5

H. L. Ju (first)
C. Kwon (additional)
Qi Li (additional)
R. L. Greene (additional)
T. Venkatesan (additional)

References 18 Referenced 442

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Dates

Type	When
Created	23 years ago (July 26, 2002, 9:38 a.m.)
Deposited	1 year, 6 months ago (Feb. 3, 2024, 3 a.m.)
Indexed	3 weeks, 3 days ago (Aug. 2, 2025, 1:10 a.m.)
Issued	30 years, 10 months ago (Oct. 17, 1994)
Published	30 years, 10 months ago (Oct. 17, 1994)
Published Print	30 years, 10 months ago (Oct. 17, 1994)

Funders 0

None

BibTeX

@article{Ju_1994, title={Giant magnetoresistance in La1‚àíxSrxMnOz films near room temperature}, volume={65}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.112808}, DOI={10.1063/1.112808}, number={16}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Ju, H. L. and Kwon, C. and Li, Qi and Greene, R. L. and Venkatesan, T.}, year={1994}, month=oct, pages={2108‚Äì2110} }

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