Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Mitsuo Machida"'
Publikováno v:
Ferroelectrics. 378:152-156
Crystal structure of dimethylammonium dihydrogen phosphate has been determined in the paraelectric phase at 298 K and in the ferroelectric phase at 223 K by a single crystal neutron diffraction method. Two inequivalent protons in the hydrogen bonds f
Publikováno v:
Ferroelectrics. 346:120-124
Ferroelastic phase transition in TlH 2 PO 4 has been investigated by means of neutron diffraction using single-crystal sample. The average structures of TlH2PO 4 in the phases I and II have been determined. The crystal analysis with anisotropic therm
Publikováno v:
Ferroelectrics. 346:125-129
Neutron crystal structure analysis of the tetragonal and monoclinic RbD 2 PO 4 crystals have been perfomed in the high-temperature phase and the intermediate phase, respectively. The structure refinement revealed that the PO 4 tetrahedra and the D at
Autor:
Mitsuo Machida
Publikováno v:
Ferroelectrics. 338:205-209
Rotational dynamics of (CH3)3NH+ cation in (CH3)3NHCl has been studied by molecular dynamics (MD) simulation and 13C-NMR. Activation energy determined from temperature dependence of spin-lattice relaxation time is 12.0 kJmol− 1 in high-temperature
Autor:
Mitsuo Machida, T. Ishibashi
Publikováno v:
Ferroelectrics. 338:211-215
Proton spin-lattice relaxation time was measured for C6H11X/SC(ND2)2 (X = Cl, Br) to study the motions of C6H11X guest molecules. For the both inclusion compounds, the relaxation time detects clearly two modes in low-temperature phase. Activation ene
Autor:
Toku Ishibashi, Mitsuo Machida
Publikováno v:
Journal of the Physical Society of Japan. 73:3070-3077
In order to study the phase transition in (CH 3 ) 3 NCH 2 COO·H 3 PO 4 (BP) at 365 K, crystal structure was re-determined at 373 K (phase I) and 298 K (phase II) by single-crystal neutron diffracti...
Publikováno v:
Journal of the Physical Society of Japan. 73:2458-2463
Structure and dynamics of chlorocyclohexane/thiourea inclusion compound C 6 H 11 Cl/SC(NH 2 ) 2 have been studied by single crystal X-ray structure analysis and 1 H-NMR. The structure analysis at room temperature disclosed hydrogen bonds in host subu
Autor:
Hiroki Taniguchi, Masaru Komukae, Mitsuo Machida, Toku Ishibashi, Hiroyuki Uchida, Nobumitsu Koyano, Toshio Osaka
Publikováno v:
Journal of the Physical Society of Japan. 73:107-115
Crystal structure of deuterated glycinium phosphite was studied in the paraelectric (P) phase at 348 K and in the ferroelectric (F) phase at 223 K by means of the single crystal neutron diffraction...
Autor:
Mitsuo Machida
Publikováno v:
Journal of the Physical Society of Japan. 72:2979-2983
The ferroelectric transition in the monoclinic K 2 ZnBr 4 was studied by the molecular dynamics (MD) simulation. Wave-vector dependence of the mode-coupling constant along the c * axis is determined in the paraelectric phase for the transverse optic
Publikováno v:
Journal of the Physical Society of Japan. 72:2533-2538
The mode-coupling between the rotational and translational motions in the monoclinic K 2 ZnBr 4 was studied by the molecular dynamics simulation and X-ray structure analysis. In the structure analy...