公开(公告)号：DE59707729D1

公开(公告)日：2002-08-22

申请号：DE59707729

申请日：1997-01-09

Applicant: EMTEC MAGNETICS GMBH

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

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

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.