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Magnetic and magneto-optical properties of cobalt/nickel multilayer thin films
Abstract
Co/Ni multilayer thin films were prepared in a magnetron sputtering system, and their structural, magnetic and magneto-optical properties were experimentally investigated. It was found that the properties of Co/Ni multilayer thin films depend strongly on buffer layer materials and buffer layer crystalline orientation. Interface anisotropy is the main source for perpendicular magnetic anisotropy; and perpendicular magnetic anisotropy of Co/Ni multilayers can be achieved with Au buffer layers. The magnetic anisotropy constant depends on deposition rate as well as buffer layer texture. The Co/Ni multilayers on Au buffer layers show large Kerr rotation and magneto-optical figure of merit. The temperature response of the coercivity indicates that Co/Ni multilayers are more thermally stable than Co/Pd multilayers. The single crystal grain size is about 10 nm and the magnetic domain size is about 0.5 $\mu$m for the Co/Ni multilayers. The dominant coercivity mechanism is magnetic pinning, and ellipsometric analyses reveal that the pinning centers come from the interdiffussion of Co/Ni multilayers with the Au buffer layer.
Subject Area
Condensation|Materials science
Recommended Citation
Zhang, Ying Bo, "Magnetic and magneto-optical properties of cobalt/nickel multilayer thin films" (1995). ETD collection for University of Nebraska-Lincoln. AAI9611079.
https://digitalcommons.unl.edu/dissertations/AAI9611079