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Bi_(12)SiO_(20)single cryslats of dimensions 45×50×180mm about 3.5kg in wei-ght have been grown in our institute by the Czochralski technique combinedwith the down weighing method for automatic equidiameter growth.They weregrown along the〔110〕direction with a growth rate of 5 mm/hr and a rotationrate of 30 rpm. Raw materials,Bi_2O_3 and SiO_2 of purity 99.9%, were mixedin stoichiometric relation.
Bi_ (12) SiO_ (20) single cryslats of dimensions 45 × 50 × 180mm about 3.5kg in wei-ght have been grown in our institute by the Czochralski technique combinedwith the down weighing method for automatic equidiameter growth.They weregrown along the 〔110 ] Direction with a growth rate of 5 mm / hr and a rotation rate of 30 rpm. Raw materials, Bi_2O_3 and SiO_2 of purity 99.9%, were mixed in stoichiometric relation.