Microstructural and magneto-optical characterization of ferrimagnetic multilayered thin-film rare-earth iron garnet heterostructures

Publication Type:

Conference Paper

Authors:

B.M. Simion; Ramamoorthy Ramesh; E. Marinero; R.L. Pfeffer; G. Thomas

Source:

Proceedings - Annual Meeting, Microscopy Society of America, p.898-899 (1994)

Keywords:

anisotropy, crystal growth, Crystal microstructure, Diffusion in solids, Ferrimagnetic materials, Garnets, Grain boundaries, iron compounds, Iron garnet, Magnetic properties, Magnetic thin films, Magnetooptical devices, Metallic superlattices, optical properties, Pulsed layer deposition, Rutherford backscattering

Abstract:

Superlattice heterostructures consisting of alternating single crystalline ferrimagnetic yttrium-iron-garnet (YIG) and bismuth-iron-garnet (BIG) thin film layers, alternating YIG and europium-substituted BIG (EBIG), were deposited on single crystalline (111) paramagnetic gadolinium-gallium-garnet (GGG) substrates. The perpendicular magnetic anisotropy of the YIG/EBIG heterostructures makes this type of materials an extremely viable choice for magneto-optical recording. The novel properties of these layered structures can be linked to several causes such as inter-layer stresses present in the structures, diffusion of the rare-earth species at the layer interfaces, uniformity of layer stoichiometry, layer thickness ratios and layer composition.

Notes:

cited By 0