Title:
CRYSTAL MATERIAL AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2017/146244
Kind Code:
A8
Abstract:
The present invention clarifies the congruent composition of a langasite-type oxide and establishes a method for producing crystals of any desired composition of AE3ME1+a(Ga1-xAlx)3+bSi2+cO14 (AE is an alkaline earth metal, ME is Nb or Ta, 0 ≤ x ≤ 1, -0.5 < a ≤ 0 or 0 < a < 0.5, -0.5 < b ≤ 0 or 0 < b < 0.5, -0.5 < c ≤ 0 or 0 < c < 0.5; however, excluding when a = b = c = 0), whereby generation of impurities can be suppressed and the yield and crystal production rate can be improved. The raw material is a mixed raw material in which an alkaline earth metal or a carbonate or oxide thereof, Nb or Ta or an oxide thereof, Ga or an oxide thereof, Al or an oxide thereof, and Si or an oxide thereof are mixed.
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Inventors:
YOSHIKAWA AKIRA (JP)
YOKOTA YUUI (JP)
OHASHI YUJI (JP)
KAMADA KEI (JP)
KUDO TETSUO (JP)
INOUE KENJI (JP)
SHOJI YASUHIRO (JP)
IGARASHI YU (JP)
ARAKAWA MOTOTAKA (JP)
KUROSAWA SHUNSUKE (JP)
YAMAJI AKIHIRO (JP)
YOKOTA YUUI (JP)
OHASHI YUJI (JP)
KAMADA KEI (JP)
KUDO TETSUO (JP)
INOUE KENJI (JP)
SHOJI YASUHIRO (JP)
IGARASHI YU (JP)
ARAKAWA MOTOTAKA (JP)
KUROSAWA SHUNSUKE (JP)
YAMAJI AKIHIRO (JP)
Application Number:
PCT/JP2017/007236
Publication Date:
November 02, 2017
Filing Date:
February 24, 2017
Export Citation:
Assignee:
PIEZO STUDIO INC (JP)
UNIV TOHOKU (JP)
UNIV TOHOKU (JP)
International Classes:
C30B29/34; C30B9/04; H01L41/187; H01L41/39
Attorney, Agent or Firm:
YAMAKAWA,Shigeki et al. (JP)
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