公开(公告)号：DE3274970D1

公开(公告)日：1987-02-12

申请号：DE3274970

申请日：1982-07-16

Applicant: BASF AG

Inventor： HIBST HARTMUT DR

IPC: C01G49/00 ,  C01G51/00 ,  C01G53/00 ,  C04B35/00 ,  G11B5/706 ,  H01F1/11 ,  H01F1/36

Abstract: A process for the preparation of finely divided ferrites of the general formula MeFe2O4 (I) where Me=aMn+bNi+cZn+dCo+eFe(II), and the atomic weight ratios a, b, c, d and e are each from 0 to 1 and their sum is 1, or M12Me12Fe12O22 (II) where M1 is barium, strontium, calcium and/or lead, and Me1 is divalent manganese, copper, iron, cobalt, nickel, zinc, magnesium and/or equimolar amounts of lithium and trivalent iron, or M2(Me2Ti)xFe12-2xO19 (III) where M2 is barium or strontium, Me2 is zinc, nickel and/or cobalt and x is from 0 to 2.0, wherein the salts required for the particular composition are mixed with sodium carbonate and/or potassium carbonate, the mixture obtained is heated at 700 DEG to 1200 DEG C., and the resulting ferrite is then isolated by leaching with water.

公开(公告)号：DE3518481A1

公开(公告)日：1986-11-27

申请号：DE3518481

申请日：1985-05-23

Applicant: BASF AG

Inventor： HIBST HARTMUT DR ,  RUDOLF PETER DR ,  JAKUSCH HELMUT DR

IPC: H01F1/11 ,  C01G29/00 ,  C01G49/00 ,  C01G49/06 ,  C01G51/00 ,  C09D5/23 ,  G11B5/706 ,  H01F1/113 ,  B05D5/12 ,  C04B35/26 ,  C09D7/12 ,  C30B29/22 ,  G11B5/84 ,  H01F1/117 ,  H01F10/20

公开(公告)号：DE3417793A1

公开(公告)日：1985-11-14

申请号：DE3417793

申请日：1984-05-14

Applicant: BASF AG

Inventor： HIBST HARTMUT DR ,  RUDOLF PETER DR ,  MC KEE GRAHAM EDMUND DR

IPC: B22F9/20 ,  B22F9/16 ,  C01G49/00 ,  G11B5/706 ,  H01F1/11 ,  H01F1/10

公开(公告)号：DE3172351D1

公开(公告)日：1985-10-24

申请号：DE3172351

申请日：1981-10-03

Applicant: BASF AG

Inventor： HIBST HARTMUT DR ,  JAKUSCH HELMUT DR

IPC: C01G49/00 ,  G11B5/70 ,  G11B5/706 ,  H01F1/11