Phase Transitions and Ferroelectric and Superionic Properties of K3Nb3B2O12–K3Nb3Si2O13 Single Crystals
Source abstract
Abstract
Data are presented on K3Nb3O6(B2O6)1–x(Si2O7)x solid solutions in the K3Nb3B2O12–K3Nb3Si2O13 system. The system is shown to contain two partial solid-solution series in the composition ranges 0 < x< 0.2 (KNB:Si) and 0.8 < x< 1 (KNS:B). KNB:Si crystals are grown from off-stoichiometric melts, and their polymorphism and physical properties are studied. Similar to K3Nb3B2O12, KNB:Si crystals exhibit a complex polymorphism and combine ferroelectric, ferroelastic, and superionic properties. Si substitution for B is shown to have a significant effect on the phase-transition temperatures and electrical properties of K3Nb3B2O12 crystals. The results obtained for K3Nb3Si2O13 crystals demonstrate that, in spite of their hexagonal habit, their room-temperature structure possesses orthorhombic or lower symmetry. The room-temperature dielectric permittivity e33 of K3Nb3Si2O13 crystals is as high as 4000.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Crystal Structures and Properties · Solid-state spectroscopy and crystallography · Glass properties and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (13)
Show source-provided references
1. Becker, P., Schneider, J., and Bohaty, L., Ferroishe Phasenumwandlungen in K3Nb3B2O12, Z. Kristallogr. Suppl., 1993, vol. 7, p. 14.
2. Becker, P. and Bohaty, L., Phasenumwandlungen in K3Nb3B2O12, Z. Kristallogr. Suppl., 1995, vol. 9, p. 28.
3. Becker, P., Held, P., and Bohaty, L., (BO3)2] and Crystal Structure of the Room Temperature Modification, Z. Kristallogr., 1996, vol. 211, no. 7, pp. 449–452.10.1524/zkri.1996.211.7.449 ↗
4. Becker, P., Bohaty, L., and Shneider, J., Rietveld Refinement of the Structure of High-Temperature K3[Nb3O6(BO3)2], Kristallografiya, 1997, vol. 42, no. 2, pp. 250–254.
5. Voronkova, V.I., Yanovskii, V.K., Leont'eva, I.N., et al., Growth, Structure, Polymorphism, and Physical Properties of KNbB2O6 and K3Nb3B2O12 Crystals, Kristallografiya, 1996, vol. 41, no. 5, pp. 879–881.
6. Voronkova, V.I., Kharitonova, E.P., Yanovskii, V.K., et al., Growth, Structure, and Properties of Ferroelectric, Ferroelastic, Superionic Crystals K3Nb3B2O12 and K3_xNaxNb3B2O12, Kristallografiya, 2000, vol. 45, no. 5, pp. 888–892.
7. Choisnet, J., Groult, D., and Raveau, B., Nouvelles structures à tunnels de section pentagonale K3Nb3B2O12 et K3Ta3B2O12, Acta Crystallogr., Sect. B: Struct. Crystallogr. Cryst. Chem., 1977, vol. 33, pp. 1841–1845.10.1107/S056774087700716X ↗
8. Abrahams, S.C., Zyontz, L.E., Bernstein, J.L., et al., Piezoelectric K3Ta3B2O12: Crystal Structure at Room Temperature and Crystal Growth, J. Chem. Phys., 1981, vol. 75, no. 11, pp. 5456–5460.10.1063/1.441947 ↗
9. Kharitonova, E.P., Voronkova, V.I., Yanovskii, V.K., and Stefanovich, S.Yu., Polymorphism of Ferroelectric, Ferroelastic, Superionic Crystals K3Nb3B2O12 and K3_NaxNb3B2O12, Neorg. Mater., 2002, vol. 38, no. 8, pp. 978–983 [Inorg. Mater. (Engl. Transl.), vol. 38, no. 8, pp. 819–824].10.1023/A:1019782912439 ↗
10. Jaulmes, S., Launay, S., Mahe, P., and Quarton, M., Silicatoniobate de potassium, K3Nb3O6Si2O7, Acta Crystallogr., Sect. C: Cryst. Struct. Commun., 1995, vol. 51, pp. 794–796.10.1107/S0108270194012114 ↗
11. Mill', B.V., Butashin, A.V., and Kaminskii, A.A., Growth and Luminescence of K6Nb6Si4O26 Crystals, Neorg. Mater., 1993, vol. 29, no. 11, pp. 1563–1564 [Inorg. Mater. (Engl. Transl.), vol. 29, no. 11, pp. 1399–1400].
12. Fizika tverdogo tela. Spetspraktikum (Solid State Physics: A Special Laboratory Course), Moscow: Mosk. Gos. Univ., 1983, p. 124.
13. Miller, A., Duc De Chaulnes’ Method for Refractive-Index Determination, J. Opt. Soc. Am., 1968, vol. 58, p. 428.10.1364/JOSA.58.000428 ↗