Structure and properties of antimony-doped potassium titanyl phosphate single crystals
Tóm tắt
Antimony-doped potassium titanyl phosphate (KTP) crystals of the composition KTiOPO4 are studied by X-ray diffraction analysis. It is shown that, with an increase of antimony content in KTP crystals, the occupancies of potassium positions change and new additional positions for potassium atoms arise. The formation of additional vacancies and splitting of the potassium-cation positions explain the considerable decrease in the temperature of the ferroelectric phase transition, enhancement of the relaxation phenomena, and an increase in electric conductivity of antimony-doped KTP crystals. Substitution of antimony atoms for titanium is accompanied by elongation of short and shortening of long Ti-O bonds in the TiO6 octahedra, processes which result in lower intensity of second-harmonic generation in laser-irradiated KTP crystals.
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M. E. Hagerman and K. R. Poeppelmeier, Chem. Mater. 7(4), 603 (1995).
M. N. Satyanarayan, A. Deepthy, and H. L. Bhat, Crit. Rev. Solid State Mater. Sci. 24(2), 103 (1999).
G. D. Stucky, M. L. F. Phillips, and T. E. Gier, Chem. Mater. 1(5), 492 (1989).
V. I. Voronkova, V. K. Yanovskii, T. Yu. Losevskaya, et al., Kristallografiya 49(1), 131 (2004) [Crystallogr. Rep. 49 (1), 123 (2004)].
T. Yu. Losevskaya, O. A. Alekseeva, V. K. Yanovskii, et al., Kristallografiya 45(5), 809 (2000) [Crystallogr. Rep. 45 (5), 739 (2000)].
T. Yu. Losevskaya, V. K. Yanovskii, V. I. Voronkova, and S. Yu. Stefanovich, Neorg. Mater. 38(11), 1377 (2002).
V. I. Voronkova, V. K. Yanovskii, T. Yu. Losevskaya, and S. Yu. Stefanovich, J. Appl. Phys. 94(3), 1954 (2003).
P. A. Thomas and B. E. Watts, Solid State Commun. 73, 97 (1990).
L. T. Cheng, L. K. Cheng, R. L. Harlow, and J. D. Bierlein, Appl. Phys. Lett. 64, 155 (1994).
O. A. Alekseeva, N. I. Sorokina, M. K. Blomberg, et al., Kristallografiya 46(2), 215 (2001) [Crystallogr. Rep. 46 (2), 176 (2001)].
O. A. Alekseeva, N. I. Sorokina, I. A. Verin, et al., Kristallografiya 46(5), 816 (2001) [Crystallogr. Rep. 46 (5), 741 (2001)].
Y. Piffard, A. Lachgar, and M. Tounoux, J. Solid State Chem. 58, 253 (1985).
Y. Piffard, A. Lachgar, and M. Tornoux, Rev. Chim. Miner. 22, 101 (1985).
O. A. Alekseeva, M. K. Blomberg, V. N. Molchanov, et al., Kristallografiya 46(4), 710 (2001) [Crystallogr. Rep. 46 (4), 642 (2001)].
O. A. Alekseeva, N. I. Sorokina, I. A. Verin, et al., Kristallografiya 48(2), 238 (2003) [Crystallogr. Rep. 48 (2), 205 (2003)].
A. P. Dudka, I. A. Verin, V. N. Molchanov, et al., Kristallografiya (in press).
J. Ravez, A. Simon, B. Boulanger, et al., Ferroelectrics 124, 379 (1991).
E. L. Belokoneva and B. V. Mill’, Zh. Neorg. Khim. 37(5), 998 (1992).
E. L. Belokoneva, K. S. Knight, W. I. F. David, and B. V. Mill, J. Phys.: Condens. Matter 9, 3833 (1997).
E. L. Belokoneva and B. V. Mill’, Zh. Neorg. Khim. 37(2), 252 (1992).
E. L. Belokoneva, F. M. Dolgushin, M. Yu. Antipin, et al., Zh. Neorg. Khim. 38(4), 631 (1993).
E. L. Belokoneva, F. M. Dolgushin, M. Yu. Antipin, et al., Zh. Neorg. Khim. 39(7), 1080 (1994).
E. L. Belokoneva, Usp. Khim. 63(7), 559 (1994).
E. L. Belokoneva and B. V. Mill’, Zh. Neorg. Khim. 39(3), 355 (1994).
E. L. Belokoneva and B. V. Mill’, Zh. Neorg. Khim. 39(3), 363 (1994).
S. T. Norberg, G. Svensson, and J. Albertsson, Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 57, 510 (2001).
M.-P. Crosnier, D. Guyomard, A. Verbaere, and Y. Piffard, Eur. J. Solid State Inorg. Chem. 27, 845 (1990).
V. Petricek and M. Dusek, in The Crystallographic Computing System (Inst. Phys., Praha, 2000).
B. V. Andreev, V. A. Dyakov, N. I. Sorokina, and V. I. Simonov, Solid State Commun. 80(10), 777 (1991).