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In situ single-liquid-source metal-organic chemical vapor deposition of (La0.8Ca0.2)MnO3 giant magnetoresistive films

  • Y.Q. Li (a1), J. Zhang (a1), S. Pombrik (a1), S. DiMascio (a1), W. Stevens (a1), Y.F. Yan (a1) and N.P. Ong (a2)...

Abstract

A large magnetoresistance change (ΔR/RH) of −550% has been observed at 270 K in (La0.8Ca0.2)MnO3 thin films. The films were prepared in situ on LaAlO3 substrates by single-liquid-source metal-organic chemical vapor deposition. M(thd)n (M = La, Ca, and Mn, and n = 2, 3) were dissolved together in an organic solution and used as precursors for the deposition of (La0.8Ca0.2)MnO3 thin films. Deposition was conducted at an oxygen partial pressure of 1.2 Torr and a substrate temperature ranging from 600 °C to 700 °C. The mechanism for the large magnetoresistance change in this manganese oxide is briefly discussed.

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a)Present address: NZ Applied Technology, 150C New Boston Street, Woburn, Massachusetts 01801.

References

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In situ single-liquid-source metal-organic chemical vapor deposition of (La0.8Ca0.2)MnO3 giant magnetoresistive films

  • Y.Q. Li (a1), J. Zhang (a1), S. Pombrik (a1), S. DiMascio (a1), W. Stevens (a1), Y.F. Yan (a1) and N.P. Ong (a2)...

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