Electrical and magnetic properties of La0.5Sr0.5CoO3 thin films

G. P. Luo, Y. S. Wang, S. Y. Chen, A. K. Heilman, C. L. Chen, C. W. Chu, Y. Liou, N. B. Ming

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51 Citations (Scopus)


Highly conductive perovskite La0.5Sr0.5CoO3 thin films were grown on (012) LaAlO3 by pulsed-laser deposition at different substrate temperatures. Magnetoresistance (MR) measurements show only a negative effect for the films grown at a temperature of 800°C. However, a positive MR effect was found for the films grown at lower temperatures of 400 and 500°C. The sign of the magnetoresistance changed from positive to negative near 150 K under an applied magnetic field of 5.0 T, and the largest positive MR of 2.6% was obtained at a temperature of 4.2 K for the film grown at 500°C. Low-temperature magnetic hysteresis of the films was also studied, and it is suggested that the scattering of the carrier at the domain boundary may lead to the positive-MR effect.

Original languageEnglish
Pages (from-to)1908-1910
Number of pages3
JournalApplied Physics Letters
Issue number14
Publication statusPublished - 2000 Apr 3

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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