Isotropic granular thin film
AssigneesCitizen Finedevice Co., Ltd., Citizen Watch Co., Ltd.
InventorsMitsunori MIYAMOTO, Toshiya KUBO
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Abstract
An isotropic granular thin film having a high sensitivity to an external magnetic field when linearly polarized light enters from the normal direction of a magnetic thin film is provided. An isotropic granular thin film 1 in which ferromagnetic nanoparticles 3 are dispersed in a dielectric matrix 2, wherein the ferromagnetic nanoparticle 3 consists of Co, an average particle diameter of the ferromagnetic nanoparticle 3 is not less than 5.0 nm and not more than 17.0 nm, a particle volume density of the ferromagnetic nanoparticle 3 is not less than 1 vol % and not more than 20 vol %, and magnetic dipole interaction energy of the ferromagnetic nanoparticle 3 is less than or equal to 2.0E-26 J.
Claims5
An isotropic granular thin film in which ferromagnetic nanoparticles are dispersed in a dielectric matrix, wherein
- the ferromagnetic nanoparticle consists of Co,
- an average particle diameter of the ferromagnetic nanoparticle is not less than 5.0 nm and not more than 17.0 nm,
- a particle volume density of the ferromagnetic nanoparticle is not less than 1 vol % and not more than 20 vol %, and
- magnetic dipole interaction energy of the ferromagnetic nanoparticle is less than or equal to 2.0E-26 J.
Dependencies are inferred from the claim text.