CRYSTALLIZED GLASS AND ITS MANUFACTURING METHOD

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To provide a crystallized glass capable of improving transparency.SOLUTION : The crystallized glass CG is crystallized glass containing nano sized crystals, including SiO2, ZnO, B2O3, and dispersed plurality of crystal grains. Each of the plurality of crystal grains comprises a rare earth element, and is formed of any one of a fluoride, a chloride and a fluoride chloride. Each of the plurality of crystal grains consists of any one of a crystalline phase of BaF2, a crystalline phase of SrF2, a crystalline phase of CaF2, a crystalline phase of NaYF4, and a crystalline phase of BaFCl. A portion of Ba of the crystalline phase made of BaF2, a part of Sr in the crystalline phase made of SrF2, a part of Ca of the crystalline phase consisting of CaF2, a portion of Y of the crystal phase consisting of NaYF4 and a portion of Ba of the crystal phase consisting of BaFCl are substituted with rare earth elements.SELECTED DRAWING : None