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Interrelationship between Number of Mobile Protons, Diffusion Coefficient, and AC Conductivity in Superprotonic Conductors, CsHSO4 and Rb3H(SeO4)2

Published

Author(s)

Kazuya Kamazawa, Masashi Harada, Toru Araki, Yasumitsu Matsuo, Madhu Sudan Tyagi, Jun Sugiyama

Abstract

Using quasielastic neutron scattering (QENS), we investigated proton dynamics for two superprotonic conductors, CsHSO4 and Rb2H(SeO4)2. In the superprotonic conducting phase, two translational proton motions were observed for the both compounds. Making comparison with the data obtained in the non-superprotonic conducting phase, the motion with slow proton diffusion was found to be significant for the appearance of superprotonic conductivity. The analysis of the intensity of the QENS signals indicated that a drastic increase in the number density of mobile protons above Tc induces superprotonic conductivity for the both compounds, despite a slow diffusion.
Citation
Journal of the Physical Society of Japan
Volume
83

Keywords

quasi-elastic neutron scattering, super-protonic conductors, diffusion

Citation

Kamazawa, K. , Harada, M. , Araki, T. , , Y. , , M. and Sugiyama, J. (2014), Interrelationship between Number of Mobile Protons, Diffusion Coefficient, and AC Conductivity in Superprotonic Conductors, CsHSO<sub>4</sub> and Rb<sub>3</sub>H(SeO<sub>4</sub>)<sub>2</sub>, Journal of the Physical Society of Japan, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=911980 (Accessed July 27, 2021)
Created June 25, 2014, Updated February 19, 2017