Title:
BISMUTH-SUBSTITUTED RARE EARTH IRON GARNET SINGLE CRYSTAL, FARADAY ROTATOR, OPTICAL ISOLATOR, AND PRODUCTION METHOD FOR BISMUTH-SUBSTITUTED RARE EARTH IRON GARNET SINGLE CRYSTAL
Document Type and Number:
WIPO Patent Application WO/2021/215048
Kind Code:
A1
Abstract:
Provided is a bismuth-substituted rare earth iron garnet single crystal that suppresses valence variation of Fe ions and is suitable in a Faraday rotator or optical isolator in which insertion loss is reduced. A bismuth-substituted rare earth iron garnet single crystal according to the present invention is characterized by being represented by the compositional formula (GdaLnbBicMg3-(a+b+c))(FedGaeTifPt5-(d+e+f))O12. In the compositional formula, 0.02 ≤ f ≤ 0.05, 0.02 ≤ {3-(a+b+c)} ≤ 0.08, and -0.01 ≤ {3-(a+b+c)}-{f+5-(d+e+f)} ≤ 0.01. Furthermore, Ln is a rare earth element that may be selected from Eu, Dy, Gd, Ho, Tm, Yb, Lu, and Y.
Inventors:
WATANABE TOSHIAKI (JP)
FUKUDA SATORU (JP)
FUKUDA SATORU (JP)
Application Number:
PCT/JP2020/047330
Publication Date:
October 28, 2021
Filing Date:
December 18, 2020
Export Citation:
Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
C30B29/28; C01G55/00; C30B19/04; G02F1/09
Foreign References:
| JP2004083390A | 2004-03-18 | |||
| JP2014189472A | 2014-10-06 | |||
| JP2004206078A | 2004-07-22 | |||
| JPS49143B1 | 1974-01-05 |
Other References:
See also references of EP 4141151A1
Attorney, Agent or Firm:
ORISAKA Shigeki (JP)
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