【摘要】 系统地介绍一项用正电子湮没寿命谱学法确定离子型晶体极性正负方向的新技术，该技术可用于极性离子型晶体的生产。更多还原

【Abstract】 In this paper a new technique to determine positive (or negative) polarity orientation for the ion--type crystals based on the positron annihilation lifetime spectroscopy has been expounded. This technique can be adopted for the production of the ion-type polar crystals.更多还原