Ferromagnetic resonance (FMR) of a room temperature organic based mixed valent Vanadium Hexacyanochromate magnet K$_{1.54}$V$^{II}_{0.77}$V$^{III}_{0.08}$[Cr$^{III}$(CN)$_{6}$](SO$_{4})_{0.16}$3.1H$_{2}$O.

ORAL

Abstract

Recently, organic materials both magnetic and non-magnetic have been receiving significant attention for their potential applicability in spintronics devices such as spin-valves, memory devices, spin-transistors etc. Here we report magnetic and X-band FMR studies of an organic based mixed valent Vanadium Hexacyanochromate magnet K$_{1.54}$V$^{II}_{0.77}$V$^{III}_{0.08}$[Cr$^{III}$(CN)$_{6}$](SO$_{4})_{0.16}$3.1H$_{2}$O with an ordering temperature well above room temperature ($>$340K). Temperature dependencies of FMR parameters including intensity, linewidth, resonance field will be discussed in terms of the coexistence of long-range magnetic ordering and spin-glass-like behavior in this material. [1] {\O}yvind Hatlevik et. al. Adv. Mater. \textbf{11}, 914 (1999).

*Supported in part by AFOSR Grant No. F49550-06-1-0175 DOE Grant No. DE-FG02-01ER45931 and DE-FG02-86ER45271

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Authors

  • N.P. Raju

    • Dept. of Chemistry, University of Utah
    • Dept. of Physics, The Ohio State University

  • Jung-Woo Yoo

    • Physics, The Ohio State University
    • Dept. of Physics, The Ohio State University
    • Department of Physics, The Ohio State University

  • N.P. Raju

    • Dept. of Chemistry, University of Utah
    • Dept. of Physics, The Ohio State University

  • N.P. Raju

    • Dept. of Chemistry, University of Utah
    • Dept. of Physics, The Ohio State University

  • N.P. Raju

    • Dept. of Chemistry, University of Utah
    • Dept. of Physics, The Ohio State University

  • Joel S. Miller

    • University of Utah
    • Chemistry, University of Utah
    • Dept. of Chemistry
    • Department of Chemistry, University of Utah

  • A. J. Epstein

    • Department of Physics, The Ohio State University, Columbus, OH 43210-1117
    • Depts. of Physics and Chemistry, The Ohio State University
    • Department of Physics and Chemistry, The Ohio State University