OSCILLATOR USING MAGNETIC DOMAIN WALL AND METHOD OF OPERATING THE SAME

摘要

PURPOSE: An oscillator using a magnetic domain wall and an operating method thereof are provided to reduce a critical current for oscillation with high output power and high quality factor. CONSTITUTION: A free layer(100) is formed on a substrate and includes a first area(10) in the center and a second area(20) extended to both sides. The width of the second area is wider than the width of the first area. The first area with relatively narrow width is formed between two second areas which are separated from each other. The first area connects the center of two second areas. The free layer has a square groove on both sides thereof. A magnetic domain wall is positioned in the first area with the relatively narrow width and is a boundary of two adjacent magnetic domains which are oppositely magnetized.