Title:
LITHIUM NIOBATE CRYSTAL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/029288
Kind Code:
A1
Abstract:
The present application relates to the technical field of photoelectric materials, and in particular to a lithium niobate crystal and a preparation method therefor. The lithium niobate crystal preparation method comprises the steps of: calculating a growth temperature field structure of lithium niobate crystals; calculating growth parameters of lithium niobate crystals; mixing and drying lithium and niobium sources to obtain a mixed raw material; in the air atmosphere, sintering the mixed raw material to obtain lithium niobate polycrystalline blocks; and in the calculated temperature field structure, melting the lithium niobate polycrystalline blocks and then carrying out crystal growth by a pulling method according to the calculated growth parameters under the guidance of seed crystals, to obtain lithium niobate crystals. In the lithium niobate crystal preparation method of the present application, the temperature field structure and growth parameters of the lithium niobate crystal are respectively calculated by using simulation, deduction, and calculation methods, and then, in the calculated temperature field structure, crystal growth is carried out by the pulling method according to the calculated crystal growth parameters, such that growth efficiency of the lithium niobate crystal is significantly improved.
Inventors:
XUE DONGFENG (CN)
CHEN KUNFENG (CN)
WANG XIAOMING (CN)
CHEN KUNFENG (CN)
WANG XIAOMING (CN)
Application Number:
PCT/CN2021/137616
Publication Date:
March 09, 2023
Filing Date:
December 13, 2021
Export Citation:
Assignee:
SHENZHEN INST OF ADV TECH CAS (CN)
International Classes:
C30B29/30
Foreign References:
| CN107488874A | 2017-12-19 | |||
| CN111206282A | 2020-05-29 | |||
| CN105019024A | 2015-11-04 | |||
| JP2020152628A | 2020-09-24 | |||
| CN107740188A | 2018-02-27 |
Other References:
"Doctoral Dissertation", 23 April 2011, SHAN DONG UNIVERSITY, CN, article YAN, TAO: "Growth, Structure and Properties of High Quality LiNbO 3 and LiTaO 3 Crystals", pages: 1 - 182, XP009543982
"Doctoral Dissertation", 10 April 2006, SHAN DONG UNIVERSITY, CN, article GAO, LEI: "Crystal Growth and Properties of Near-stoichiometric Lithium Niobate", pages: 1 - 119, XP009543984
"Master Thesis", 20 November 2015, SHANGHAI INSTITUTE OF TECHNOLOGY, CN, article DONG, YUANYUAN: "Synthesis, Growth and Performance of Rare Earth Doped Lithium Niobate Crystals", pages: 1 - 54, XP009543985
"Doctoral Dissertation", 10 April 2006, SHAN DONG UNIVERSITY, CN, article GAO, LEI: "Crystal Growth and Properties of Near-stoichiometric Lithium Niobate", pages: 1 - 119, XP009543984
"Master Thesis", 20 November 2015, SHANGHAI INSTITUTE OF TECHNOLOGY, CN, article DONG, YUANYUAN: "Synthesis, Growth and Performance of Rare Earth Doped Lithium Niobate Crystals", pages: 1 - 54, XP009543985
Attorney, Agent or Firm:
BEIJING ZHONG XUN TONG DA INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
Download PDF: