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Effective Anisotropy Gradient in Pressure Graded [Co/Pd] Multilayers



Brian J. Kirby, P. K. Greene, Brian B. Maranville, J. E. Davis, Kai Liu


A vertically graded anisotropy profile has been proposed as an optimized balance of low coercivity and thermal stability for multilayers used in magnetic media. Deposition pressure is known to have a profound effect on the magnetic reversal properties of Co/Pd multilayers, making it an attractive control parameter for achieving an anisotropy gradient behavior of "pressure-graded" Co/Pd, and observed pronounced gradients in the saturation magnetization and in the rate at which magnetization changes with field (the effective anisotropy). While the anisotropy gradient likely arises from a combination of factors intrinsic to deposition pressure, micromagetic simulations indicate that the observed saturation magnetization gradient alone has a major effect on the resulting coercivity.
Journal of Applied Physics




Kirby, B. , , P. , , B. , , J. and Liu, K. (2015), Effective Anisotropy Gradient in Pressure Graded [Co/Pd] Multilayers, Journal of Applied Physics, [online], (Accessed April 21, 2024)
Created February 14, 2015, Updated February 19, 2017