Giant magnetoresistance in epitaxial Nd0.7Sr0.3MnO3-δ thin films

G. C. Xiong, Q. Li, H. L. Ju, S. N. Mao, L. Senapati, X. X. Xi, R. L. Greene, T. Venkatesan

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314 Citations (Scopus)

Abstract

The magnetoresistance of epitaxial Nd0.7Sr0.3MnOδ thin films has been studied. A giant magnetoresistance, with more than 4 orders of magnitude change in resistance (-ΔR/RH>106%), was obtained at ∼60 K and a magnetic field of 8 T. This giant magnetoresistance (GMR) ratio is about one order of magnitude larger than the highest value reported previously which was observed in La-Ca-Mn-O film. We have also obtained a large GMR ratio with -ΔR/RH>3000% for H=5 T in an in situ Nd0.7Sr0.3MnOδ thin film, a much larger effect than the previous results in doped manganese oxide films in which a large GMR ratio was obtained only in postannealed samples. Our results also show that the GMR effect in these films can be strongly influenced by the thin-film preparation conditions.

Original languageEnglish
Pages (from-to)1427
Number of pages1
JournalApplied Physics Letters
DOIs
Publication statusPublished - 1995

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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