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Study of the UV spectra of Sn- and Pb-doped KCl single crystals

Изучение уф-спектра кристаллов KCl, содержащих примеси Sn и Pb

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Acta Physica Academiae Scientiarum Hungaricae

Abstract

The UV absorption of KCl crystals grown at different rates from aqueous solutions containing SnCl2 and PbCl2 in various concentrations was investigated as a function of the concentration of dopants built-in into the crystal. With increasing dopant concentration characteristic changes were observed in the absorption spectra at about 10−2 mole% concentration in the case of the non-isomorphic Sn dopant, and at 2×10−1 mole% in the case of the isomorphic Pb. The changes indicate that the manner in which the dopants are incorporated into and distributed within the crystal differs from that at lower dopant concentrations.

Резюме

Изучена зависимость УФ-абсорбции от концентрации примесей в монокристаллах KCl, выращиваемых с разными скоростями из водных растворов, содержащих примеси SnCl2 и PbCl2 в различных концентрациях. При повышении концентрации примесей в случае неизоморфной примеси Sn от 10−2% моль и в случае изоморфной примеси Pb от 2.10−1% моль, наблюдается характерное изменение абсорбционных спектров. На основе этого можно предположить, что при изменении концентрации примесей происходит изменение механизма инкорпорации примесей в кристалл и их распределения по кристаллу.

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Dedicated to Prof.I. Tarján on his 60th birthday.

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Malicskó, L., Palló, G. Study of the UV spectra of Sn- and Pb-doped KCl single crystals. Acta Physica 33, 273–280 (1973). https://doi.org/10.1007/BF03158064

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  • DOI: https://doi.org/10.1007/BF03158064

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