Effect of Interlayers Upon Texture and Magnetic Properties in Co Alloy Multilayer Films for Longitudinal Magnetic Recording

摘要: CoCrNi bilayer films with Cr, Ti and Zr interlayers were deposited by DC magnetron sputtering onto ultra densified amorphous carbon substrates characterized using cross-section transmission electron microscopy vibrating sample magnetometry. The are polycrystalline a columnar microstructure. In the Cr interlayer case there is layer-to-layer epitaxy throughout given column. Magnetic measurements snowed simple in-plane easy axis magnetic hysteresis loop. cases within column was lost beginning first CoCrNi/(Zr/Ti) interface, resulting in layer consisting of two crystallographically unrelated films. revealed complex step-structure loop for this case. Annealing film led to significant growth due solid state amorphization reaction between CoCrNi, which accompanied decrease saturation magnetization.