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Magnetic phase diagram of cubic perovskites SrMn1-xFexO3

S. Kolesnik, B. Dabrowski, J. Mais, D. E. Brown, R. Feng, O. Chmaissem, R. Kruk, C. W. Kimball

cond-mat.mtrl-sciarXiv:cond-mat/0302214

Abstract

We combine the results of magnetic and transport measurements with Mossbauer spectroscopy and room-temperature diffraction data to construct the magnetic phase diagram of the new family of cubic perovskite manganites SrMn1-xFexO3. We have found antiferromagnetic ordering for lightly and heavily Fe-substituted material, while intermediate substitution leads to spin-glass behavior. Near the SrMn0.5Fe0.5O3 composition these two types of ordering are found to coexist and affect one another. The spin glass behavior may be caused by competing ferro- and antiferromagnetic interactions among Mn4+ and observed Fe3+ and Fe5+ ions.

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