Flux growth and properties of KTiOPO4
1984; Elsevier BV; Volume: 70; Issue: 1-2 Linguagem: Inglês
10.1016/0022-0248(84)90306-3
ISSN1873-5002
AutoresJ.C. Jacco, G. M. Loiacono, M. Jaso, Gregory J. Mizell, B. Greenberg,
Tópico(s)Ferroelectric and Piezoelectric Materials
ResumoSingle crystals of KTiOPO4 (KTP) have been grown from flux compositions situated within the KPO3-K4P2O7 binary system. Crystals up to 15 × 15 × 5 mm in size were obtained from pure and modified fluxes. The solubility of KTP in the flux composition K6P4O13 has been determined between 1050°C and 580°C. Growth of KTP has been performed using the following techniques: spontaneous nucleation; slow cooling in a furnace equipped with accelerated crucible rotation (ACR) and cooling finger; gradient transport at constant ΔT; and top-seeded solution growth. A mechanism for the molecular formation of KTP is postulated. Thermal analysis of crystalline KTP using DTA has been performed in air and argon atmospheres; the results indicate that the compound melts with decomposition at 1172 and 1158°C, respectively. The transmission properties of KTP have been measured between 5000 and 200 nm. X-ray powder diffraction data for KTP have been refined.
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