147.   Development of high-pressure, high-filed and multi-frequency ESR apparatus and its application to quantum spin system
T. Sakurai, T. Horie, M. Tomoo, K. Kondo, N. Matsumi, S. Okubo, H. Ohta, Y. Uwatoko, K. Kudo, Y. Koike, H. Tanaka
J. Phys.: Conf. Series 215 (2010) 012184/1-4. (2010 May published)

148.  Anomalous Spin Dynamics Observed by High Frequency ESR in Honeycomb Lattice Antiferromagnet In Cu2/3V1/3O3
S. Okubo, H. Wada, H. Ohta, T. Tomita, M. Fujisawa, T. Sakurai, E. Ohmichi and H. Kikuchi
J. Phys. Soc. Jpn. 80(2) (2011) 023705/1-4.  (2011 Feb. published)

149.   Electron Spin Resonance Study of Photoluminescent Material GaAs:Er,O –Er Concentration Effect-
M. Fujisawa, A. Asakura, F. Elmasry, S. Okubo, H. Ohta and Y. Fujiwara
J. Appl. Phys. 109(5) (2011) 053910/1-5 (2011 March published)