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Rb ion-exchange profile in potassium titanyl phosphate (KTP)

机译:钛氧基磷酸钾(KTP)中的Rb离子交换曲线

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The Rb depth profiles in KTP as a function of ion-exchange duration in rubidium nitrate (RbNO3) melts with small concentrations of Ba(NO_3)_2 in the melt have been studied by using Rutherford backscattering (RBS). The data indicate that small Ba concentrations have a major effect on the incorporation of Rb and its distribution in the KTP. The results also show the effect of the Ba impurity in Rb ion-exchange is a function of the duration of exchange and varies sub- stantially as the impurity concentration increases. The ion-exchange of pure Rb shows a possible formation of a dif- fusion barrier which leads to a lesser near-surface concentration as the exchange duration increases. A small concentration of Ba removes this diffusion barrier.
机译:通过使用卢瑟福背散射(RBS)研究了硝酸TP(RbNO3)熔体中低浓度Ba(NO_3)_2的KTP中Rb深度随离子交换持续时间的变化。数据表明,低浓度的Ba对Rb的掺入及其在KTP中的分布有重要影响。结果还表明,Ba杂质在Rb离子交换中的作用是交换持续时间的函数,并且随着杂质浓度的增加而显着变化。纯Rb的离子交换表明可能形成扩散融合势垒,随着交换持续时间的增加,扩散势垒会导致较小的近地表浓度。少量的Ba会消除此扩散障碍。

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