Effect of substrate temperature on the magnetic properties of epitaxial sputter-grown Co/Pt

Abstract

Epitaxial Co/Pt films have been deposited by dc-magnetron sputtering onto heated C-plane sapphire substrates. X-ray diffraction, the residual resistivity, and transmission electron microscopy indicate that the Co/Pt films are highly ordered on the atomic scale. The coercive field and the perpendicular magnetic anisotropy increase as the substrate temperature is increased from 100-250 °C during deposition of the Co/Pt. Measurement of the domain wall creep velocity as a function of applied magnetic field yields the domain wall pinning energy, which scales with the coercive field. Evidence for an enhanced creep velocity in highly ordered epitaxial Co/Pt is found.

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Authors/Creators:	Mihai, AP Whiteside, AL Canwell, EJ Marrows, CH Benitez, MJ McGrouther, D McVitie, S McFadzean, S Moore, TA
Copyright, Publisher and Additional Information:	© 2013, American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Keywords:	Epitaxy; Sputter deposition; Thin films; Creep; Multilayers
Dates:	Published: 23 December 2013
Institution:	The University of Leeds
Academic Units:	The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds)
Depositing User:	Symplectic Publications
Date Deposited:	08 May 2015 14:35
Last Modified:	19 Jan 2018 17:21
Published Version:	http://dx.doi.org/10.1063/1.4856395
Status:	Published
Publisher:	American Institute of Physics
Identification Number:	https://doi.org/10.1063/1.4856395
Related URLs:	Author

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Effect of substrate temperature on the magnetic properties of epitaxial sputter-grown Co/Pt

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