Transport and magnetic properties of Pr1-xCaxMnO3 epitaxial films grown on LaAlO3 substrates

A. Maniwa, K. Okano, I. Ohkubo, H. Kumigashira, M. Oshima, M. Lippmaa, M. Kawasaki, H. Koinuma

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We have measured physical properties of Pr1-xCaxMnO3 (PCMO) epitaxial thin films with different hole concentrations (x=0.2, 0.3, 0.4, and 0.5) grown on LaAlO3 (1 0 0) substrates by laser molecular beam epitaxy technique. The temperature dependence of the resistivity shows insulating behavior in all temperature regions and the resistivity itself monotonously decreases as x increases. This insulating nature of PCMO films is similar to that of bulk PCMO crystals. However, we did not find any indication of the resistivity anomaly associated with the onset of charge ordering irrespective of x. These results suggest that the compressive strain strongly suppresses charge-ordered states in PCMO.

Original languageEnglish
Pages (from-to)2237-2238
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 3
DOIs
Publication statusPublished - 2007 Mar 1
Externally publishedYes

Keywords

  • Charge order
  • Epitaxial strain
  • Laser MBE
  • PrCaMnO
  • Thin film

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Maniwa, A., Okano, K., Ohkubo, I., Kumigashira, H., Oshima, M., Lippmaa, M., Kawasaki, M., & Koinuma, H. (2007). Transport and magnetic properties of Pr1-xCaxMnO3 epitaxial films grown on LaAlO3 substrates. Journal of Magnetism and Magnetic Materials, 310(2 SUPPL. PART 3), 2237-2238. https://doi.org/10.1016/j.jmmm.2006.10.817