These results qualitatively agree with the theoretical analysis and the LLG simulation for the Stoner-Wohlfarth grain. Authors’ information TT is an assistant professor in ISEE, Kyushu University. His research interests include micromagnetics, magnetic recording, and high frequency magnetic devices. SK received a B.S. degree in Electrical Engineering from Kyushu STI571 datasheet University in 2013. YF received an M.S. degree in ISEE from Kyushu University in 2013. YO received a B.S. degree in

Electrical Engineering from Kyushu University in 2012. KM is a professor in ISEE, Kyushu University. His research interests include magnetic devices. Acknowledgements This research was partially supported by the Storage Research Consortium (SRC) and a Grant-in-Aid for Young Scientists (A) (grant no. 25709029) 2013 from the Ministry of Education, Culture, Sports, Science, GSI-IX and Technology, Japan. References 1. Rottmayer RE, Batra S, Buechel D, Challener WA, Hohlfeld J, Kubota Y, Li L, Lu B, Mihalcea C, Mountfield K, Pelhos K, Peng

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