Mössbauer Study of the Perovskite Compound RbFeF<SUB>3</SUB>: Magnetic Structure in the Phase below 39 K and Temperature Dependence of Hyperfine Parameters below the Néel Temperature

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  • Someya Yoshiko
    The Doctoral Research Course in Human Culture, Ochanomizu University
  • Ito Atsuko
    Department of Physics, Faculty of Science, Ochanomizu University

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  • Mossbauer Study of the Perovskite Compound RbFeF3--Magnetic Structure in the Phase below 39 K and Temperature Dependence of Hyperfine Parameters below the Neel Temperature
  • Mossbauer Study of the Perovskite Compo

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The Mössbauer spectroscopy is applied to the perovskite compound RbFeF3. It is concluded that in the phase realized below T1 (39 K) the spontaneous magnetization originates in a canting of the spins, i.e. the spins are almost along a pseudo-cubic [011] axis but cant by about 6° from the [011] axis, yielding spontaneous magnetization along a pseudo-cubic [0\bar11] axis. The temperature dependence of the Mössbauer parameters obtained for the three temperature regions below TN(101 K), T2(87 K)<T<TN, T1<T<T2, T<T1, is given.

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