3) X. Sui, B. K. Cheong, D. E. Laughlin and M. H. Kryder, “Growth of perpendicular barium hexaferrite thin film media on a Pt underlayer for high density perpendicular magnetic recording,” J. Magn. Soc. Jpn., vol.18, No. S1, pp319-322, 1994.
4) T. Siosawa, M. Ichinose, N. Matsushita, S. Nakagawa and M. Naoe, “Crystallographic and magnetic characteristics of c-axis oriented Ba ferrite layer deposited on Pt (111) underlayer,” J. Magn. Soc. Jpn., vol.21, No. S2, pp73-76, 1997.
5) N. Honda, T. Kiya and K. Ouchi, “Correspondence of media noise and recording characteristics to M-H loop in perpendicular recording media,” J. Magn. Soc. Jpn. vol. 21, No. S2, pp505, 1997.