公开(公告)号：EP0379776B1

公开(公告)日：1994-10-12

申请号：EP89308004.4

申请日：1989-08-07

申请人： TODA KOGYO CORP.

发明人： Mishima, Akio ,  Tanihara, Mamoru ,  Ota, Yasutaka ,  Kawasaki, Hirofumi ,  Okinaka, Kenji ,  Ikemoto, Kunio ,  Tamari, Kousaku ,  Mori, Kohji ,  Nagai, Norimichi

IPC分类号： G11B5/706

CPC分类号： G11B5/70615 ,  Y10T428/12181

公开(公告)号：EP0379776A3

公开(公告)日：1991-05-29

申请号：EP89308004.4

申请日：1989-08-07

申请人： TODA KOGYO CORP.

发明人： Mishima, Akio ,  Tanihara, Mamoru ,  Ota, Yasutaka ,  Kawasaki, Hirofumi ,  Okinaka, Kenji ,  Ikemoto, Kunio ,  Tamari, Kousaku ,  Mori, Kohji ,  Nagai, Norimichi

IPC分类号： G11B5/706

CPC分类号： G11B5/70615 ,  Y10T428/12181

摘要： Acicular magnetic iron based alloy particles for use in magnetic recording media contain in the vicinity of the surfaces of said particles from 1.5 to 10 mol% of B (calculated as B) based on the amount of Fe and from 1.5 to 10 mol% of Co (calculated as Co) based on the amount of Fe and have a saturation magnetization of not less than 125 Am²/kg (125 emu/g) and a Switching Field Distribution (S.F.D.) value of not more than 0.50.

公开(公告)号：EP0379776A2

公开(公告)日：1990-08-01

申请号：EP89308004.4

申请日：1989-08-07

申请人： TODA KOGYO CORP.

发明人： Mishima, Akio ,  Tanihara, Mamoru ,  Ota, Yasutaka ,  Kawasaki, Hirofumi ,  Okinaka, Kenji ,  Ikemoto, Kunio ,  Tamari, Kousaku ,  Mori, Kohji ,  Nagai, Norimichi

IPC分类号： G11B5/706

CPC分类号： G11B5/70615 ,  Y10T428/12181

摘要： Acicular magnetic iron based alloy particles for use in magnetic recording media contain in the vicinity of the surfaces of said particles from 1.5 to 10 mol% of B (calculated as B) based on the amount of Fe and from 1.5 to 10 mol% of Co (calculated as Co) based on the amount of Fe and have a saturation magnetization of not less than 125 Am²/kg (125 emu/g) and a Switching Field Distribution (S.F.D.) value of not more than 0.50.

摘要翻译： 用于在磁记录媒体使用针状磁性铁基合金颗粒含有在所述颗粒的表面附近，从1.5基于Fe的量至10摩尔％B（计算为B）的和为1.5〜10摩尔％的Co的 基于Fe的量（计算为Co）和具有不小于125上午<2>的饱和磁化/公斤（125鸸鹋/ g）和不大于零点50分的开关场分布（SFD）值。