Synthesis, properties, and structure of potassium titanyl phosphate single crystals doped with hafnium

Journal Article · Sat May 15 04:00:00 EDT 2010 · Crystallography Reports

DOI:https://doi.org/10.1134/S1063774510030077· OSTI ID:22051206

Orlova, E I; Kharitonova, E P ^[1]; Verin, I A; Alekseeva, O A; Sorokina, N I ^[2]; Voronkova, V I ^[1]

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1. Moscow State University, Faculty of Physics (Russian Federation)
2. Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)

Single crystals of potassium titanyl phosphate doped with hafnium are grown by spontaneous flux crystallization. Their physical properties are studied, and the structure of three KTi{sub 1-x}Hf{sub x}OPO{sub 4} crystals (x = 0.01, 0.03, and 0.12) is determined. In the crystals studied, hafnium mostly occupies the second titanium position. The doping of KTP crystals with hafnium results in an elongation of K-O bonds in the potassium polyhedra and, as a consequence, in a considerable (by approximately 180 deg. C) decrease in the temperature of ferroelectric phase transition. The magnitude of anomalous permittivity substantially decreases. The electrical conduction in the specimens studied decreases by approximately half an order of magnitude in the low-temperature region but remains almost unchanged in the high-temperature region. Even at minor concentrations, the presence of a hafnium additive in the specimens considerably (by 35%) enhances the intensity of the second harmonic generation of laser radiation.

• OSTI ID: 22051206
• Journal Information: Crystallography Reports, Journal Name: Crystallography Reports Journal Issue: 3 Vol. 55; ISSN 1063-7745; ISSN CYSTE3
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTALLIZATION
DOPED MATERIALS
ELONGATION
FERROELECTRIC MATERIALS
HAFNIUM
HARMONIC GENERATION
LASER RADIATION
MONOCRYSTALS
PERMITTIVITY
PHOSPHATES
POTASSIUM COMPOUNDS
SYNTHESIS
TEMPERATURE RANGE 0400-1000 K
TITANIUM COMPOUNDS