Title:
MAGNETO-OPTICAL MATERIAL AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/154026
Kind Code:
A1
Abstract:
Provided are: a magneto-optical material with which the adjustment width of magneto-optical characteristics such as a Faraday rotation angle can be increased; and a production method therefor. The temperature of a substrate 20 is controlled to a first temperature included in the range of 300-800[ºC], and the ambient pressure of the substrate 20 is controlled to at most 1.0×10-4 [Pa] (first step). By means of a composite target of a magnetic metal and a TCO material exhibiting ENZ characteristics in an infrared wavelength range, or a plurality of targets of respective materials, a magneto-optical material 10 is deposited on the substrate 20 while controlling the temperature of the substrate 20 to a second temperature included in the range of 300-800[ºC], and controlling the ambient pressure of the substrate 20 in the range of 0.1-10 [Pa] (second step). The magneto-optical material 10 has a nano-granular structure including: a matrix 11 composed of a transparent conductive oxide; and magnetic metal particles 12 dispersed in the matrix 11.
Inventors:
IWAMOTO SATOSHI (JP)
OTA YASUTOMO (JP)
IKEDA KENJI (JP)
KOBAYASHI NOBUKIYO (JP)
OTA YASUTOMO (JP)
IKEDA KENJI (JP)
KOBAYASHI NOBUKIYO (JP)
Application Number:
PCT/JP2022/000798
Publication Date:
July 21, 2022
Filing Date:
January 12, 2022
Export Citation:
Assignee:
RES INSTITUTE FOR ELECTROMAGNETIC MATERIALS (JP)
International Classes:
G02F1/09; C23C14/08; H01F10/14; H01F10/16; H01F10/18; H01F41/18
Foreign References:
| JP2001076329A | 2001-03-23 | |||
| JP2017098423A | 2017-06-01 | |||
| JP2020523621A | 2020-08-06 | |||
| US20180350922A1 | 2018-12-06 | |||
| JP2019518963A | 2019-07-04 | |||
| JP2014523390A | 2014-09-11 | |||
| JP2004309700A | 2004-11-04 | |||
| JP2018028499A | 2018-02-22 |
Other References:
DAVOYAN ARTHUR R., ENGHETA NADER: "Theory of Wave Propagation in Magnetized Near-Zero-Epsilon Metamaterials: Evidence for One-Way Photonic States and Magnetically Switched Transparency and Opacity", PHYSICAL REVIEW LETTERS, AMERICAN PHYSICAL SOCIETY, US, vol. 111, no. 25, 1 December 2013 (2013-12-01), US , pages 70, XP055951092, ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.111.257401
KENJI IKEDA, TIANJI LIU, YASUTOMO OTA, SATOSHI IWAMOTO, NOBUKIYO KOBAYASHI: "02-pB-12 Magneto-optical effect in nanogranular films with epsilon near zero matrix", SUMMARIES OF THE 45TH ANNUAL CONFERENCE ON MAGNETICS IN JAPAN; AUGUST 31 - SEPTEMBER 2, 2021, vol. 45, 17 August 2021 (2021-08-17) - 2 September 2021 (2021-09-02), JP, pages 169, XP009538395, ISSN: 1882-2959
KENJI IKEDA, TIANJI LIU, YASUTOMO OTA, SATOSHI IWAMOTO, NOBUKIYO KOBAYASHI: "02-pB-12 Magneto-optical effect in nanogranular films with epsilon near zero matrix", SUMMARIES OF THE 45TH ANNUAL CONFERENCE ON MAGNETICS IN JAPAN; AUGUST 31 - SEPTEMBER 2, 2021, vol. 45, 17 August 2021 (2021-08-17) - 2 September 2021 (2021-09-02), JP, pages 169, XP009538395, ISSN: 1882-2959
Attorney, Agent or Firm:
SATO & ASSOCIATES (JP)
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