KTiOPO4 single crystals doped with trivalent impurity ions of chromium were grown by spontaneous nucleation and seeded growth techniques. Structural refinement performed on the grown crystals by single crystal X-ray diffraction technique reveals that chromium ions occupy both the potassium sites with different filling coefficients. Incorporation of Cr3+ causes the absorption edge in the UV spectrum to shift towards the lower energy. The dependence of optical absorption coefficient with the incident photon energy in the UV-VIS region has been discussed. Optical and SEM studies indicate the existence of two-dimensional nucleation mechanisms.
Growth, structural and optical studies of chromium doped KTiOPO4 single crystals / Kannan, C. V.; Ganesamoorthy, S.; Bocelli, G.; Righi, Lara; Ramasamy, P.. - In: JOURNAL OF CRYSTAL GROWTH. - ISSN 0022-0248. - 252:1-3(2003), pp. 328-332. [10.1016/S0022-0248(02)02502-2]
Growth, structural and optical studies of chromium doped KTiOPO4 single crystals
RIGHI, Lara;
2003-01-01
Abstract
KTiOPO4 single crystals doped with trivalent impurity ions of chromium were grown by spontaneous nucleation and seeded growth techniques. Structural refinement performed on the grown crystals by single crystal X-ray diffraction technique reveals that chromium ions occupy both the potassium sites with different filling coefficients. Incorporation of Cr3+ causes the absorption edge in the UV spectrum to shift towards the lower energy. The dependence of optical absorption coefficient with the incident photon energy in the UV-VIS region has been discussed. Optical and SEM studies indicate the existence of two-dimensional nucleation mechanisms.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
