Patent ID: 9129691
Filing Date: 2015-09-08
Classification: G11C,H01F,H01L

Abstract:
1. A voltage-controlled magnetic anisotropy (VCMA) switch apparatus, comprising: at least two ferromagnetic (FM) layers having a FM fixed layer and a FM free layer; a dielectric (DE) layer interposed between said FM fixed layer and said FM free layer; and wherein material, shape and thickness of said FM free layer and said FM fixed layer are selected to have in-plane (IP) and out-of-plane (OOP) anisotropies; wherein material, shape and thickness of said FM free layer is selected to have in-plane (IP) and out-of-plane (OOP) anisotropies which are nearly equal; and wherein OOP anisotropy of said FM free layer is affected by interface properties between said FM layers and said DE layer, and is controlled by voltages applied across said DE layer as an applied voltage, giving rise to a voltage-controlled magnetic anisotropy (VCMA) effect which switches magnetization orientation of said FM free layer in said apparatus.