^<31>P-NMR Study of Phase Transition in Betaine Phosphate (CH_3)_3NCH_2COO・H_3PO_4 at 365K(Condensed Matter : Structure, Mechanical and Thermal Properties)
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概要
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The phase transition in (CH_3)_3NCH_2COO・H_3PO_4 at T_<Cl>=365K was studied by ^<31>P-NMR. Spinlattice relaxation time shows a sharp dip at T_<Cl> due to the critical slowing down. The critical relaxation rate is reproduced by the quasi-one-dimensional Ising model with antiferroelectric interactions along both the intrachain and interchain directions. The interaction parameters for intrachain J_‖ and interchain J_⊥ are determined to be 693(3) and 4.1(1)K, respectively.
- 社団法人日本物理学会の論文
- 2004-06-15
著者
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MACHIDA Mitsuo
Department of Physics, Kyushu University
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Machida Mitsuo
Department Of Chemistry And Physics Condensed Matter Kyosho University
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MURASHIMA Ryota
Department of Physics, Kyushu University
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SANJO Yohtarou
Department of Physics, Kyushu University
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Murashima Ryota
Department Of Physics Kyushu University
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Sanjo Yohtarou
Department Of Physics Kyushu University
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