Patent ID: 8068387

Claim:
A magneto-optical device, comprising: a non-magnetic support body; an interconnection layer formed on the non-magnetic support body, the interconnection layer configured to magnetize fine metal magnetic particles using a magnetic field generated by energization of the interconnection layer and to spatially change a magneto-optical effect; a fine particle arrangement layer formed on the interconnection layer, the fine particle arrangement layer including a plurality of regularly arranged fine metal magnetic particles; and a polarizer layer formed on the fine particle arrangement layer, wherein the fine metal magnetic particles are configured to be magnetized by an external magnetic field applied to the fine metal magnetic particles, the fine metal magnetic particles are configured to receive linearly polarized light made incident on the fine metal magnetic particles, and the fine metal magnetization particles are configured to have an increased magneto-optical effect by an interaction between the incident light on the fine metal magnetic particles and a surface plasmon oscillation of the fine metal magnetic particles.