公开(公告)号：US2982607A

公开(公告)日：1961-05-02

申请号：US77217458

申请日：1958-11-06

Applicant: IBM

Inventor： MORUZZI VICTOR L ,  CALHOUN BERTRAM A

IPC: C04B35/26

CPC classification number: C04B35/2608

公开(公告)号：US3006856A

公开(公告)日：1961-10-31

申请号：US86332059

申请日：1959-12-31

Applicant: IBM

Inventor： CALHOUN BERTRAM A ,  SHEVEL JR WILBERT L

IPC: C04B35/26

CPC classification number: C04B35/2675

公开(公告)号：US3876994A

公开(公告)日：1975-04-08

申请号：US26536672

申请日：1972-06-22

Applicant: IBM

Inventor： CALHOUN BERTRAM A ,  CHANG HSU ,  ROSIER LAURENCE L ,  SLONCZEWSKI JOHN C

IPC: G11C11/14 ,  G11C19/08

CPC classification number: G11C19/0875 ,  G11C19/0808 ,  G11C19/0816 ,  G11C19/0841 ,  G11C19/085

Abstract: A bias magnetic field H.sub.p is produced in the plane of the magnetic sheet in which bubble domains exist, in any type of bubble domain apparatus. This planar bias field alters the spin system within the domain wall which leads to a change in domain wall mobility. Thus, the presence and absence of the planar bias field can be used as a control to trigger domain propagation and domain collapse throughout the entire magnetic sheet, or in selected portions of the magnetic sheet. Block access of domain information is thereby made possible as well as gating and decoding functions.