7Pankov V, Pemet M. Fine hexaferrite particales for perpendicular recording prepared by the coprecipitation method in the presence of an inert conponent. J Magn Magn Mater, 1993,120:69 ～ 72
8Lin C H, Shin Z W. Hydrothermal processing to produce magnetic particulates. IEEE Trans Magn, 1990, 26 ( 1 ): 15 ～ 17
9Oda K, Yoshio T, Oka O K. Magnetic properties of SrFe12O19particles prepared by the gless ceramic method. J Mater Sct Let, 1984, 3(11): 1007 ～ 1010
10Gornert P, Sinn E, Schuppel W. Structural and magnetic properties of BaFe12-2xCoxFe16O27 powders prepared by the glass crystallization method. IEEE Trans Magn, 1990, 26( 1 ):12 ～ 14
