公开(公告)号：US3420717A

公开(公告)日：1969-01-07

申请号：US3420717D

申请日：1966-03-28

Applicant: IBM

Inventor： FIELDS DAVIS S JR ,  MEHL DANIEL L

IPC: C21D1/00 ,  B21J1/06 ,  C22C18/04 ,  C22F1/00 ,  C22F1/16 ,  C22F1/04

CPC classification number: C22C18/04 ,  C22F1/165 ,  Y10S420/902

公开(公告)号：CA1127300A

公开(公告)日：1982-07-06

申请号：CA341315

申请日：1979-12-06

Applicant: IBM

Inventor： BASSETT ROGER D ,  MCCORMICK WAYNE ,  DAUGHENBAUGH GERALD A ,  FIELDS DAVIS S JR ,  POLLEYS RHODES W ,  SILKENSEN RALPH D ,  STEVING GERALD

IPC: G11B5/30

Abstract: WEAR RESISTANT MAGNETORESTRICTIVE HEAD An MR head is disclosed in which the MR element is deposited onto a sapphire substrate with a particular crystallographic orientation and a sapphire closure piece also having a particular crystallographic orientation is used. The substrate has the MR element deposited onto either the {0001} or the {1120} plane with -the {1100} plane being oriented as the wear surface. The closure piece has either the {1120} or the {0001} plane facing the MR material and the {1100} plane oriented as the wear surface. BO978058

公开(公告)号：CA826620A

公开(公告)日：1969-11-04

申请号：CA826620D

Applicant: IBM

Inventor： MEHL DANIEL L ,  FIELDS DAVIS S JR

公开(公告)号：CA783954A

公开(公告)日：1968-04-30

申请号：CA783954D

Applicant: IBM

Inventor： MEHL DANIEL L ,  FIELDS DAVIS S JR ,  ADDIS BERNARD F