Plate-like composite ferrite particles for magnetic recording an

Details Plate-like composite ferrite particles for magnetic recording an Plate-like composite ferrite particles for magnetic recording an

1989-05-30

1991-12-24

Cashion, Jr., Merrell C.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

428403, 428694, 252 6259, B32B 900

Patent

active

050751697

ABSTRACT:
Disclosed herein are plate-like composite ferrite particles for magnetic recording comprising plate-like composite ferrite containing Ba particles having a composition represented by 19<(Fe+M)/Ba.ltoreq.22, wherein M represents at least one metal (II) selected from the group consisting of Co, Ni, Zn, Mn and Mg and at least one metal (IV) selected from the group consisting of Ti, Sn, Zr and Ge, in which Ba exists in the composition at a linear concentration gradient between the surface and the nucleation portion of said particles, and a process for producing such plate-like composite ferrite particles.

REFERENCES:
patent: 3770500 (1973-11-01), Imaoka et al.
patent: 4341648 (1982-07-01), Kubo et al.
patent: 4529524 (1985-07-01), Nagai et al.
patent: 4548801 (1985-10-01), Nagai et al.
patent: 4561988 (1985-12-01), Nagai et al.
patent: 4584242 (1986-04-01), Nagai et al.
patent: 4585568 (1986-04-01), Nagai et al.
patent: 4664831 (1987-05-01), Hibst et al.
patent: 4698182 (1987-02-01), Nagai et al.
patent: 4752407 (1988-06-01), Nagai et al.
patent: 4778734 (1988-10-01), Ohdan et al.
patent: 4781981 (1988-11-01), Katamoto et al.
patent: 4789494 (1988-12-01), Aoki et al.
patent: 4806429 (1989-02-01), Nagai et al.
patent: 4828916 (1989-07-01), Yamamoto et al.
patent: 4886714 (1989-12-01), Torii et al.

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