Methods and devices for growing scintillation crystals with multi-component garnet structure
AssigneeMeishan Boya Advanced Materials Co., Ltd.
InventorsYu WANG, Weiming GUAN, Min LI
Life of this patent
Estimating the term…
Abstract
The present disclosure provides a method for growing scintillation crystals with multi-component garnet structure. According to the method, through weight compensating for reactants, introducing a flowing gas, adopting a new temperature field device, and optimizing process parameters, problems such as component deviation and crystal cracking during the crystal growth can be solved to a certain extent, and grown crystals have consistent performance and good repeatability.
Claims21
A crystal, a formula of the crystal being A3yB5xO12, wherein:
- A consists of at least one of lanthanide, at least one of actinide, or at least one of yttrium;
- B consists of at least one of aluminum, gallium, indium, or scandium;
- and
- x=0.0001˜0.5, and y=0.00001˜0.06.
A method for growing a crystal, wherein:
- a formula of the crystal is A3yB5xO12, wherein
- A consists of at least one of lanthanide, at least one of actinide, or at least one of yttrium;
- B consists of at least one of aluminum, gallium, indium or scandium;
- and
- x=0.01%˜50%, y=0.001%˜6%;
- the method comprises:
- weighting reactants based on a molar ratio of the reactants according to a reaction equation for generating the crystal after a first preprocessing operation is performed on the reactants;
- placing the reactants, on which a second preprocrssing operation has been performed, into a crystal growth device;
- introducing a flowing gas into the crystal growth device after sealing the crystal growth device;
- and
- activating the crystal growth device to grow the crystal based on a Czochralski technique.
A method for growing a crystal, comprising:
- weighting reactants based on a molar ratio of the reactants according to a reaction equation (1) after a first preprocessing operation is performed on the reactants,
- 6yCeO2+3(1−y)Gd2O3+5xAl2O3+5(1−x)Ga2O3→2(CeyGd1-y)3(AlxGa1-x)5O12+O2↑ (1)
- wherein x=0.01% 50%, y=0.001%˜6%, and a weight of Ga2O3 exceeds 0.01%˜10% of a weight of Ga2O3 determined according to the reaction equation (1) or a total weight of the reactants determined according to the reaction equation (1);
- placing the reactants, on which a second preprocessing operation has been performed, into a crystal growth device;
- introducing a flowing gas into the crystal growth device after sealing the crystal growth device;
- and
- activating the crystal growth device to grow the crystal based on a Czochralski technique.
21-28. (canceled)
Dependencies are inferred from the claim text.