Phase diagram of La1-xCaxMnO3 thin films in 0.40 = x = 0.45

ORAL

Abstract

The $x-T$ phase diagram of La$_{1-x}$Ca$_{x}$MnO$_{3}$ films is expected to be very different from that of polycrystalline samples, due to epitaxial strain. Two series of films differing in composition by $x$=0.01 were prepared in the range 0.40 $\le $ x $\le $ 0.45 by pulsed laser deposition on SrTiO$_{3}$ (001) and NdGaO$_{3}$ (001) substrates. Ferromagnetism was found in all samples, with the ferromagnetic fraction decreasing with increasing $x$. Low temperature metallic behaviour was only observed for $x \quad \le $ 0.41.

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Authors

  • D. Sanchez

  • L.E. Hueso

  • J.C. Chapman

  • N.D. Mathur

    Department of Materials Science, Cambridge University, UK, Department of Materials Science, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, UK, University of Cambridge