Spatial Magnetic Phase Separation in the Oxygen Deficient Perovskite SrCoO$_{3-y}$

ORAL

Abstract

We report here the unique local structure of the magnetically phase separated perovskite SrCoO$_{3-y}$ by means of transverse field (TF) and zero field (ZF) muon spin rotation. Previously we reported samples of SrCoO$_{3}$ and SrCoO$_{2.875}$ have unique magnetic and crystallographic phases, whereas samples of intermediate composition have multiple magnetic transitions but a single structural phase (\textit{Appl. Phys. Lett}. \textbf{99}, 052503 (2011)). Muon measurements establish that the intermediate compounds show spatially separated, distinct magnetic phases -- true magnetic phase separation. In addition, the two magnetic phases evolve with temperature in an unusual way indicating that the two phases remain coupled.

*Work at UConn was supported by NSF contract \# DMR-0907197.

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Authors

  • Z.H. Zhu

    • Physics Department at University of Connecticut

  • F.J. Rueckert

    • Wentworth Institute of Technology

  • J.I. Budnick

    • Physics Department at University of Connecticut

  • W.A. Hines

    • Physics Department at University of Connecticut

  • B.O. Wells

    • Physics Department at University of Connecticut

  • Ch. Niedermayer

    • Laboratory for Neutron Scattering at Paul Scherrer Institut

  • B. Dabrowski

    • Department of Physics at Northern Illinois University