Longitudinal magnetic recording media with thermal stabilization layers

Abstract

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Neutron scattering studies of nanomagnetism and artificially structured materials

“…However, this approach is limited, since if the magnetic grains are too small, the media will become superparamagnetic. A novel solution to this dilemma was recently implemented through the use of media comprised of antiferromagnetically coupled recording layers [284,285], which are being used to extend longitudinal recording schemes to higher recording densities ( Figure 26(a)). In this strategy the bit is reduced in lateral size, but is anchored to another magnetic layer across a spacer in order to stabilize it thermally.…”

MFM studies of interlayer exchange coupling in Co/Ru/Co films: Effect of Ru layer thickness

“…They are expected to have many advantages over single layers, including improved density and stability, enhanced switching speed, and higher reliability of the switching process [3][4][5]. Since the first observation of an antiferromagnetic coupling between ferromagnetic layers through a nonmagnetic spacer [6], interlayer exchange coupling has been the subject of numerous studies [7][8][9][10][11][12][13][14][15][16][17][18].…”

Studies of magnetic properties of the stabilizing layer for synthetic antiferromagnetically coupled media

“…[1][2][3] Therefore, the structural and magnetic properties of the stabilizing layer are essential in controlling the magnetic and recording performance of SAF media. There has been considerable work done to investigate the magnetic and reversal properties of SAF media, [1][2][3][4][5][6][7][8][9][10][11] however, most of it was focused on the top magnetic layer, and the magnetic properties of L S and its correlation with the coupling strength J have not been investigated intensively. In some of the earlier works, the magnetic properties of L S were treated as the parameters independent of the stabilizing layer thickness (t S ), however this may not be true for a very thin L S .…”