Yoshihiro Furukawa

TL;DR: In this paper, a first-order phase transition of CsSnCl3 to a cubic perovskite phase was observed at Ttr = 379 K. The temperature dependence of the electric conductivity and the X-ray diffraction data for CsCl3 suggested a reconstructive nature of the phase transition, and also suggested the onset of chloride-ion diffusion just below the phase-transition temperature to the cubic phase.

TL;DR: In this article, a disordered perovskite structure at the Cl site was found by the Rietveld analysis, and this disordered model was also confirmed by 35Cl NMR. The mechanism of the ionic conductivity and the process to attain a conducting phase were discussed on the basis of the temperature dependence of the powder X-ray diffraction and the spin-lattice relaxation times.

TL;DR: A series of trichlorogermanate (II) salts (AGeCl 3, A = Rb, Cs, CH 3 NH 3, and (CH 3 ) 4 N) have been synthesized and characterized by 35 Cl NQR, 35 CL NMR, AC conductivity, DTA, and X-ray diffraction techniques.

TL;DR: In this paper, a powder and single crystal X-ray diffraction was performed for trimethylethylammonium iodide and three solid phases, named I, II, and III, were obtained above 410 K, between 336 and 410 K and below 336 K, respectively.

TL;DR: In this article, the spin-lattice relaxation time, T1, of 1H and 35Cl nuclei in several crystalline phases appearing below room temperature was measured. And the activation energies, Ea, for the motion of cations are determined to be 7.0, 3.7, and 2.7 kJ/mol for X=Cl, Br, and I respectively.