Patent ID: 6714446
Filing Date: 2004-03-30
Classification: G11C,H01L

Abstract:
A magnetoelectronics information device, comprising:a first multi-layer structure, said first multi-layer structure comprising: a first magnetic sublayer; a second magnetic sublayer; and a first spacer layer interposed between said first magnetic sublayer and said second magnetic sublayer, said first spacer layer providing a first antiferromagnetic exchange coupling between said first magnetic sublayer and said second magnetic sublayer that is quantified by a first saturation field (H1sat); a second multi-layer structure, said second multi-layer structure comprising: a third magnetic sublayer; a fourth magnetic sublayer; and a second spacer layer interposed between said third magnetic sublayer and said fourth magnetic sublayer, said second spacer layer providing a second exchange antiferromagnetic coupling between said third magnetic sublayer and said fourth magnetic sublayer that is quantified by a second saturation field (H2sat); and a third spacer layer interposed between said first multi-layer structure and said second multi-layer structure, said third spacer layer providing a third antiferromagnetic exchange between said first multi-layer structure that is quantified by a third saturation field (H3sat) that is less than said first saturation field (H1sat) and said second saturation field (H2sat).