Citation: Takai, S.; Shinohara, T.; Hoshikawa, A.; Harjo, S.; Oikawa, K.; Ishigaki, T.; Kamiyama, T.; Esaka, T. (2007). Neutron diffraction study on the defect structure of Ta-substituted Zn2TiO4 oxide ion conductors. Journal of the Ceramic Society of Japan, 115, pp. 780-785.