公开(公告)号：DE19601412C2

公开(公告)日：1999-07-22

申请号：DE19601412

申请日：1996-01-17

Applicant: EMTEC MAGNETICS GMBH

Inventor： POGANIUCH PETER DR ,  SCHWAB EKKEHARD DR ,  DAUSCH WILMA M DR ,  KOERNER REINHARD DR ,  WIMBERSKY WERNER

IPC: G11B5/706 ,  H01F1/047 ,  H01F1/06 ,  G11B5/62 ,  C09C1/62

Abstract: PCT No. PCT/EP97/00062 Sec. 371 Date Jul. 13, 1998 Sec. 102(e) Date Jul. 13, 1998 PCT Filed Jan. 9, 1997 PCT Pub. No. WO97/26666 PCT Pub. Date Jul. 24, 1997The present invention relates to phosphorus-containing ferromagnetic pigments comprising, in particular, from 30 to 70% by volume of a core, said core comprising essentially iron and cobalt, and from 30 to 70% of a shell, said shell comprising essentially aluminum, phosporus, silicon, oxygen, and optionally magnesium and sodium; the invention further relates to a process for preparation of said pigments, their use in magnetic recording materials and magnetic recording materials which contain such pigments.