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SUBSTRATE AND OXYGEN-ANNEALING EFFECTS ON THE PULSED-LASER-DEPOSITED La0.5Ca0.5Mn1-xMxO3 (M = Fe, Ni) THIN FILMS

L. S. Hsu1, C. J. Liu1, T. W. Wu1, D. Luca1,*

Affiliation

  1. Department of Physics, National Chang-Hua University of Education, Chang-Hua 50058, Taiwan, Republic of China

Abstract

Perovskite manganite thin films of La0.5Ca0.5MnO3 doped with 5% Fe or Ni were grown on SrTiO3, LaAlO3, and NdGaO3 single-crystal substrates by pulsed-laser deposition. The as deposited films were amorphous and epitaxial layers were obtained only after ex-situ post annealing at 900 oC under 1 atmosphere of oxygen. The effects of different substrates and oxygen-annealing conditions of the films correlate with their structural, magnetoresistance, and electronic properties..

Keywords

Perovskite, Pulsed-laser deposition, Magnetoresistance, X-ray absorption spectroscopy.

Submitted at: April 17, 2003
Accepted at: May 8, 2003

Citation

L. S. Hsu, C. J. Liu, T. W. Wu, D. Luca, SUBSTRATE AND OXYGEN-ANNEALING EFFECTS ON THE PULSED-LASER-DEPOSITED La0.5Ca0.5Mn1-xMxO3 (M = Fe, Ni) THIN FILMS, Journal of Optoelectronics and Advanced Materials Vol. 5, Iss. 2, pp. 409-414 (2003)