公开(公告)号：EP0875066A1

公开(公告)日：1998-11-04

申请号：EP97900975.0

申请日：1997-01-09

申请人： BASF Magnetics GmbH

发明人： POGANIUCH, Peter ,  SCHWAB, Ekkehard ,  DAUSCH, Wilma, M. ,  KÖRNER, Reinhard ,  WIMBERSKY, Werner

IPC分类号： G11B5 ,  H01F1

CPC分类号： G11B5/70621 ,  H01F1/061 ,  Y10T428/12181 ,  Y10T428/2991 ,  Y10T428/2993

摘要： The invention relates to acicular, ferromagnetic, ferriferous and cobaltiferrous pigments which contain per 100 mol of the molar sum of iron and cobalt, 5 to 20 mol of cobalt, 1 to 5 mol of aluminium, 3 to 10 mol of silicon, 0.7 to 3.5 mol of phosphorus, and oxygen, the sum of the parts by weight of the elements iron, cobalt, aluminium, silicon, phosphorus and oxygen being 95 to 100 % by weight of the total weight of the pigments. The ferromagnetic pigments can also be used to prepare magnetic recording materials.