"Izabela Sosnowska,Masaki Azuma,Rados?aw Przenios?o,Dariusz Wardecki,Wei-tin Chen,Kengo Oka,Yuichi Shimakawa","Crystal and Magnetic Structure in Co-Substituted BiFeO<sub>3</sub>",,"Inorganic Chemistry",,"Vol. 52",,"pp. 13269-13277",2013,Nov.
"Masaki Azuma,Wei-tin Chen,Hayato  seki,Michal  Czapski,Smirnova olga,Kengo oka,Masaichiro Mizumaki,Tetsu Watanuki,Naoki Ishimatsu,Naomi Kawamura,Shintaro Ishiwata,Matthew G. Tucker,Yuichi Shimakawa,J. Paul Attfield","Colossal negative thermal expansion in BiNiO3 induced by intermetallic charge transfer",,"NATURE COMMUNICATIONS",,"Vol. 2","No. 347","pp. 1-5",2011,June
"Kengo Oka,Masaki Azuma,Wei-tin Chen,hitoshi Yusa,Alexei A. Belik,Eiji Takayama-Muromachi,Masaichiro Mizumaki,Naoki Ishimatsu,Nozomu Hiraoka,Masahiko Tsujimoto,Matthew G. Tucker,J. Paul Attfield,Yuichi Shimakawa","Pressure-Induced Spin-State Transition in BiCoO3",,"JOURNAL OF THE AMERICAN CHEMICAL SOCIETY",,"Vol. 132","No. 27","p. 9438",2010,July