Patent ID: 7057861
Filing Date: 2006-06-06
Classification: B82Y,G11B,H01F

Abstract:
1. An electromagnetic transducer laminate, comprising: a laminate structure including a first ferromagnetic layer having a pair of facing surfaces, a non-magnetic layer being disposed adjacent to one of the surfaces of the first ferromagnetic layer, a second ferromagnetic layer being disposed adjacent to the non-magnetic layer, and an antiferromagnetic layer being disposed to adjacent to the second ferromagnetic layer; a non-magnetic exchange coupling layer being disposed adjacent to the other surface of the first ferromagnetic layer; and a semi-hard magnetic layer being disposed adjacent to the non-magnetic exchange coupling layer, and being exchange-coupled to the first ferromagnetic layer through the non-magnetic exchange coupling layer, wherein a width in a longitudinal direction of the semi-hard magnetic layer is larger than a width in a longitudinal direction of the first ferromagnetic layer.