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Durham University

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Publication details for Professor Del Atkinson

Barton, C. W., Slater, T. J. A., Rowan-Robinson, R. M., Haigh, S. J., Atkinson, D. & Thomson, T. (2014). Precise control of interface anisotropy during deposition of Co/Pd multilayers. Journal of Applied Physics 116(16): 203903.

Author(s) from Durham


We demonstrate the control of perpendicular magnetic anisotropy (PMA) in multilayer films without modification of either the microstructure or saturation magnetization by tuning the Ar+ ion energy using remote plasma sputtering. We show that for [Co/Pd]8 multilayer films, increasing the Ar+ ion energy results in a strong decrease in PMA through an increase in interfacial roughness determined by X-ray reflectivity measurements. X-ray diffraction and transmission electron microscope image data show that the microstructure is independent of Ar+ energy. This opens a different approach to the in-situ deposition of graded exchange springs and for control of the polarizing layer in hybrid spin transfer torque devices.