Crystal Chemistry of Lead Titanate in Relation to Its Electrical Properties
Source abstract
Abstract
The origin of the discrepancy between the measured average parameter of the perovskite unit cell of PbTiO3and the unit-cell parameter calculated for an ideal perovskite structure is analyzed with the use of extended x-ray absorption fine structure spectroscopy data, which demonstrate that PbTiO3contains Pb4+ions. The amount of Pb4+depends on the preparation conditions and may attain ≃6 at. %. Assumption is made that the presence of crystallographic shear planes allows a fraction of the Pb2+ions to occupy octahedral sites near the shear planes. The maximum content of Pb2+on the B site is ≃2.5 at. %. The formula proposed for the cation composition of imperfect lead titanate differs from the ideal formula Pb2+Ti4+O3and indicates that lead titanate can be thought of as an internal solid solution. It is shown that the composition of lead titanate influences its electrical properties: e/e0increases with Pb4+concentration and exceeds that in single crystals by an order of magnitude.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electron and X-Ray Spectroscopy Techniques · Electronic and Structural Properties of Oxides · X-ray Diffraction in Crystallography
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (24)
Show source-provided references
1. Sakhnenko, V.P., Fesenko, E.G., and Shuvaev, A.T., Interatomic Distances in Perovskite Oxides, Kristallografiya, 1972, vol. 17, no. 12, pp. 316–322.
2. Bokii, G.B., Vvedenie v kristallokhimiyu (Introduction to Crystal Chemistry), Moscow: Mosk. Gos. Univ., 1954.
3. Shannon, R.D., Revised Effective Ionic Radii and Systematic Studies of Interatomic Distances in Halides and Chalcogenides, Acta Crystallogr., Sect. A: Cryst. Phys., Diffr., Theor. Gen. Crystallogr., 1976, vol. 32, no. 5, pp. 751–767.10.1107/S0567739476001551 ↗
4. Goldschmidt, V.M., Crystal Structure and Chemical Constitution, Trans. Faraday Soc., 1929, vol. 25, pp. 253–283.10.1039/tf9292500253 ↗
5. Pauling, L., The Nature of the Chemical Bond and the Structure of Molecules and Crystals: An Introduction to Modern Structural Chemistry, Ithaca: Cornell. Univ., 1960, 3rd ed.
6. Ahrens, L.M., Geochim. Cosmochim. Acta, 1952, vol. 2, p. 155.10.1016/0016-7037(52)90004-5 ↗
7. Spravochnik khimika (Chemist's Handbook), Leningrad: Gos. Nauchno-Tekh. Izd. Khim. Literatury, 1953, vol. 1.
8. Razumovskaya, O.N., Rudkovskaya, L.M., and Shilkina, L.A., Formation of Solid Solutions in Multicomponent Oxide Systems, Izv. Akad. Nauk SSSR, Neorg. Mater., 1983, vol. 19, no. 4, pp. 657–659.
9. Prisedskii, V.V., Komarov, V.P., Pan'ko, G.F., et al., Extended Defects and Nonstoichiometry of Perovskite Oxides, Dokl. Akad. Nauk SSSR, 1979, vol. 247, no. 3, pp. 620–624.
10. Shuvaev, A.T., Helmer, B.Yu., Lyubeznova, T.A., and Shuvaeva, V.A., Laboratory Diffractometer-Based XAFS Spectrometer, J. Synchrotron Radiat., 1999, vol. 6, no. 3, pp. 158–160.10.1107/S0909049599001879 ↗
11. Fesenko, E.G., Semeistvo perovskita i segnetoelektrichestvo (Perovskite Family and Ferroelectricity), Moscow: Atomizdat, 1972.
12. Zabinski, S.I., Rehr, J.J., Ankudinov, A., et al., Multiple Scattering Calculations of X-ray-Absorption Spectra, Phys. Rev. B: Condens. Matter, 1995, vol. 52, no. 4, pp. 2995–3009.10.1103/PhysRevB.52.2995 ↗
13. Glazer, A.M. and Mabud, S.A., Powder Profile Refinement of Lead Zirconate Titanate at Several Temperatures: II. Pure PbTiO3, Acta Crystallogr., Sect. B: Struct. Crystallogr. Cryst. Chem., 1978, vol. 34, pp. 1065–1070.10.1107/S0567740878004938 ↗
14. Kochubei, D.P., Babanov, Yu.A., Zamaraev, K.I., et al., Rentgenospektral'nyi metod izucheniya struktury amorfnykh tel (Spektroskopiya EXAFS) (X-ray Emission Spectroscopy of Amorphous Solids: EXAFS Spectroscopy), Novosibirsk: Nauka, 1988.
15. Rao, C.N.R. and Gopalakrishnan, J., New Directions in Solid State Chemistry: Structure, Synthesis, Properties, Reactivity, and Materials Design, Cambridge: Cambridge Univ. Press, 1986. Translated under the title Novye napravleniya v khimii tverdogo tela, Novosibirsk: Nauka, 1990.
16. Dobrikov, A.A. and Presnyakova, O.V., Planar Defects in PbZrO3 and PbTiO3 Crystals, Izv. Akad. Nauk SSSR, Neorg. Mater., 1981, vol. 17, no. 12, pp. 2239–2242.
17. Tret'yakov, Yu.D., Khimiya nestekhiometricheskikh okislov (Chemistry of Nonstoichiometric Oxides), Moscow: Mosk. Gos. Univ., 1974.
18. Petrenko, A.G. and Prisedskii, V.V., Defekty struktury v segnetoelektrikakh (Structural Defects in Ferroelectrics), Kiev: Uchebno-Metodicheskii Kabinet po Vysshemu Obrazovaniyu pri Minvuze USSR, 1989.
19. Coulson, C.A., Valence, Oxford: Oxford Univ. Press, 1961. Translated under the title Valentnost', Moscow: Mir, 1965.
20. Náray-Szabó, I., Kristalykemia, Budapest: Akadémiai Kiadó, 1969. Translated under the title Neorganicheskaya kristallokhimiya, Budapest: Hungarian Acad. Sci., 1969.
21. Guinier, A., Théorie et technique de la radiocristallographie, Paris: Dunod, 1956. Translated under the title Rentgenografiya kristallov, Moscow: Fizmatgiz, 1961.
22. Urusov, V.S., Teoreticheskaya kristallokhimiya (Theoretical Crystal Chemistry), Moscow: Mosk. Gos. Univ., 1987.
23. Skanavi, G.I., Fizika dielektrikov (oblast' sil'nykh polei) (Physics of Dielectrics in Strong Fields), Moscow: Fizmatgiz, 1958.
24. Turik, A.V., Topolov, V.Yu., and Aleshin, V.I., On a Correlation between Remanent Polarization and Piezoelectric Coefficients of Perovskite-Type Ferroelectric Ceramics, J. Phys. D.: Appl. Phys., 2000, vol. 33, no. 6, pp. 738–743.10.1088/0022-3727/33/6/323 ↗