The optical properties of titanium dioxide
Tóm tắt
Dispersion formulæ valid in the visible region are offered for rutile, anatase and brookite. These incorporate a characteristic frequency at 2870 Å in all the cases. The value ofdn/dt in the three crystals are explained by large transfers of transition probability and moderate shifts towards large wave-lengths of this frequency as the temperature is raised. In addition, a calculation is made of the refractive indices and birefringence of rutile on the basis of Bragg’s theory and the results are in good accord with the observed data.
Tài liệu tham khảo
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