Abstract
Abstract Due to the shielding effect of ferro-metallic materials, electric field control has been limited to magnetic thin films. Here, we show that by applying an electric field to Pt/Co based heterostructures, the modulation of magnetic anisotropy in a multilayer stack is comparable to the modulation observed for a single Pt/Co stack. Additionally, the multilayer provides a ~4 to 5 times increase in thermal stability due to the larger magnetic volume and the increase in perpendicular magnetic anisotropy. The magnetic anisotropy modulation and the increased thermal stability of the multilayer can be attributed to the proximity induced magnetism in the Pt spacer layer between the magnetic Co layers.
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