Magnetic behavior of Fe0.2Mg0.8TiO3 and Fe0.3Mg0.7TiO3 probed by Mössbauer timescale |
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| Authors: | Atsuko Ito Keiko Iwai Chiyuki Oyama Setsu Morimoto Hiroaki Kato |
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| Institution: | (1) Faculty of Science, Ochanomizu University, bunkyo-ku, 112 Tokyo, Japan;(2) Institute for Materials Research, Tohoku University, 980 Sendai, Japan |
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| Abstract: | Magnetization and Mössbauer measurements have been made on a diluted antiferromagnets FexMg1?xTiO3 with x=0.2, 0.3 and 0.7. It has been demonstrated that this system exhibits a spin glass or a reentrant spin glass like behavior in the samples with x around the percolation concenrration xc≈0.25. It has been shown that various sizes of magnetic clusters are formed well above the transition temperatures determined by the magnetization measurements in the samples with x near xc. The behavior of Fe0.2Mg0.8TiO3 is discussed as a typical cluster glass. |
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