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

Research output: Contribution to journalArticle

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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
Number of pages1
JournalApplied Physics Letters
Publication statusPublished - 1995 Dec 1

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thin films
manganese oxides
oxide films
preparation
magnetic fields

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Xiong, G. C., Li, Q., Ju, H. L., Mao, S. N., Senapati, L., Xi, X. X., ... Venkatesan, T. (1995). Giant magnetoresistance in epitaxial Nd0.7Sr0.3MnO3-δ thin films. Applied Physics Letters.
Xiong, G. C. ; Li, Q. ; Ju, H. L. ; Mao, S. N. ; Senapati, L. ; Xi, X. X. ; Greene, R. L. ; Venkatesan, T. / Giant magnetoresistance in epitaxial Nd0.7Sr0.3MnO3-δ thin films. In: Applied Physics Letters. 1995.
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Xiong, GC, Li, Q, Ju, HL, Mao, SN, Senapati, L, Xi, XX, Greene, RL & Venkatesan, T 1995, 'Giant magnetoresistance in epitaxial Nd0.7Sr0.3MnO3-δ thin films', Applied Physics Letters.

Giant magnetoresistance in epitaxial Nd0.7Sr0.3MnO3-δ thin films. / Xiong, G. C.; Li, Q.; Ju, H. L.; Mao, S. N.; Senapati, L.; Xi, X. X.; Greene, R. L.; Venkatesan, T.

In: Applied Physics Letters, 01.12.1995.

Research output: Contribution to journalArticle

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T1 - Giant magnetoresistance in epitaxial Nd0.7Sr0.3MnO3-δ thin films

AU - Xiong, G. C.

AU - Li, Q.

AU - Ju, H. L.

AU - Mao, S. N.

AU - Senapati, L.

AU - Xi, X. X.

AU - Greene, R. L.

AU - Venkatesan, T.

PY - 1995/12/1

Y1 - 1995/12/1

N2 - 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.

AB - 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.

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Xiong GC, Li Q, Ju HL, Mao SN, Senapati L, Xi XX et al. Giant magnetoresistance in epitaxial Nd0.7Sr0.3MnO3-δ thin films. Applied Physics Letters. 1995 Dec 1.