The results indicate that the optimal Tl_2O partial pressure was obtained when the stoichiometric Tl_(1.9)Ba_2Ca_2Cu_3O_ywas used as thallium source.

• 结果表明采用名义比为Tl1.；9Ba2Ca2Cu3Oy的混合物作铊源时；生成的Tl2O分压达到最佳值。