Enhancement of magnetoresistance in la0.75Ca 0.25MnO3 thin films grown on Si (1 0 0) substrates

J. C. Lee, D. G. You, S. Y. Ie, S. J. Kim, C. S. Kim, K. Jeong

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The enhancement of magnetoresistance (MR) in La0.75Ca 0.25MnO3 thin films, grown on Si (100) substrates by RF magnetron sputtering, is studied. The films have single phase and show characteristics of a cubic perovskite structure. The out-of-plane lattice parameters of films are reduced as much as 0.9 % compared with the one of the bulk sample. It is found that the maximum MR (Δρ/ρ0) of films are 0.34, 0.29 and 0.27 under the magnetic field of 1.5 T for each film with deposition temperatures of 700°C, 750°C and 800°C, respectively. The correlation between the magnetotransport property and lattice parameters of films is discussed. It seems that the enhancement of maximum MR can be attributed to the reduction of out-of-plane lattice parameters.

Original languageEnglish
Pages (from-to)1678-1680
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume226-230
Issue numberPART II
DOIs
Publication statusPublished - 2001

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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