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Rapid constructing magnetic phase diagrams by magneto-optical imaging of composition spread films

  • M.J. Turchinskaya (a1), L.A Bendersky (a1), A.J. Shapiro (a1), K.S. Chang (a2), I. Takeuchi (a2) and A.L. Roytburd (a2)...
Abstract

In this paper we present a new method of the rapid construction of magnetic phase diagrams in a temperature-composition space, using magneto-optic imaging with an indicator film technique (MOIF). The method is applied for mapping the diagram for the La1–xCaxMnO3 colossal magneto-resistive oxide, using the spread films deposited on a SrTiO3 substrate. The constructed magnetic diagram is in a good agreement with data on uniform films and bulk crystals of this system. The MOIF study of transitions under cooling and heating has revealed the formation of a non-magnetic phase in the area of temperatures from 5 K to 57 K and compositions from x = 0 to x = 0.5.

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a) Address all correspondence to this author. e-mail: leoben@nist.gov
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Journal of Materials Research
  • ISSN: 0884-2914
  • EISSN: 2044-5326
  • URL: /core/journals/journal-of-materials-research
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