"Toru Wakamatsu,Genta Kawamura,Tomohiro Abe,Shogo Kawaguchi,Chikako Moriyoshi,Yoshihiro Kuroiwa,Mitsuru Itoh,Ichiro Terasaki,Hiroki Taniguchi","Structural Phase Transitions and Possibility of the Relaxor-like State in Improper Ferroelectric Strontium-Substituted Calcium Sulfoaluminates",,"Journal of the Physical Society of Japan",,"vol. 88",,"pp. 034718 1-6",2019,Feb.