Title:
ISOTROPIC GRANULAR THIN FILM
Document Type and Number:
WIPO Patent Application WO/2024/043235
Kind Code:
A1
Abstract:
The present invention provides an isotropic granular thin film which has a high sensitivity to external magnetic fields when linearly polarized light is incident thereupon from the normal direction of a magnetic thin film. This isotropic granular thin film 1 is obtained by dispersing ferromagnetic nanoparticles 3 in a dielectric matrix 2; the ferromagnetic nanoparticles 3 are formed of Co; the average particle diameter of the ferromagnetic nanoparticles 3 is 5.0 nm or more; the particle volume concentration of the ferromagnetic nanoparticles 3 is 1 vol% to 20 vol%; and the magnetic dipole interaction energy of the ferromagnetic nanoparticles 3 is 4.6 E-28J to 2.0 E-26J.
Inventors:
MIYAMOTO MITSUNORI (JP)
KUBO TOSHIYA (JP)
KUBO TOSHIYA (JP)
Application Number:
PCT/JP2023/030166
Publication Date:
February 29, 2024
Filing Date:
August 22, 2023
Export Citation:
Assignee:
CITIZEN FINEDEVICE CO LTD (JP)
CITIZEN WATCH CO LTD (JP)
CITIZEN WATCH CO LTD (JP)
International Classes:
H01F10/16; H01F1/00; H01F41/16
Domestic Patent References:
| WO2023021877A1 | 2023-02-23 |
Foreign References:
| JP2021027222A | 2021-02-22 | |||
| JP2022057406A | 2022-04-11 | |||
| JP2023124672A | 2023-09-06 | |||
| JP6619216B2 | 2019-12-11 | |||
| JP2022085978A | 2022-06-09 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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