This paper concerns a microstructured spin-tunneling junction in which the
minor loop's slope has a dependency on its past magnetic histories. The abo
ve storage mechanism inspired the authors to design and fabricate a new typ
e of solid state spin-tunneling random access memory. This memory operates
on the general principle of storing a binary datum in the 'hard' magnetic c
omponent and sensing its remanent state by switching the 'soft' magnetic co
mponent in such a way that the magnetic state of the 'hard' component remai
ns unaltered. (C) 1999 Elsevier Science B.V. All rights reserved.