New Cation-Diffusing Phase of (CH3NH3)5Bi2Cl11

Shigenori Nagatomo; Sadamu Takeda; Kizashi Yamaguchi; Makoto Iwata; Yoshihiro Ishibashi

doi:10.1143/jpsj.64.391

Journal of the Physical Society of Japan

Online ISSN : 1347-4073
Print ISSN : 0031-9015
ISSN-L : 0031-9015

New Cation-Diffusing Phase of (CH₃NH₃)₅Bi₂Cl₁₁

Shigenori Nagatomo, Sadamu Takeda, Kizashi Yamaguchi, Makoto Iwata, Yoshihiro Ishibashi

著者情報

キーワード: proton NMR, molecular rotation, molecular diffusion, phase transition

ジャーナル認証あり

1995 年 64 巻 2 号 p. 391-394

DOI https://doi.org/10.1143/jpsj.64.391

詳細

抄録

A new phase transition of (CH₃NH₃)₅Bi₂Cl₁₁ was found at 520, K by proton NMR and differential thermal analysis. By the phase transition, the activation energy of translational diffusion of CH₃NH₃⁺ cation was reduced from 83, kJ/mol to 29, kJ/mol. Rotational motion of the cation in the low-temperature phase is also discussed.