Critical Relaxation Studied by High Frequency Magnetic Susceptibility in Mn (COOCH_3)_2・4H_2O
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概要
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The critical relaxation of the uniform mode in Mn(C00CH.).=4H.0 nearthe phase transition point was studied by using the high frequency susceptibilitytechnique (up to 450 MHz). A dip was found in z'(co) just at IN in the frequencyranxe hixher than 180 MHz. This is a clear evidence of the critical slowing down.The dispersion is found to be monodispersive except the immediate vicinity of thetransition point, where it changes to slightly polydispersive. The relaxation timeis expressed as race ', J=[.30f0.03 for 3Xi[0 '<all (a=?1 -T/T.?). Theexponent A is smaller than that of the static susceptibility, y=I.53fO.03 for6><NO '$e$J.
- 社団法人日本物理学会の論文
- 1978-02-15
著者
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Okuda Yuichi
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Okuda Yuichi
Department Of Applied Physics Faculty Of Science Tokyo Institute Of Technology
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Matsuura Motohiro
Department Of Electronics And Information Science Kyoto Institute Of Technology
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Haseda Taiichiro
Department Of Applied Physics Fuculty Of Engineering Ibaraki University
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MATSUURA Motohiro
Department of Agricultural Chemistry, Kyoto University
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