Pyro – and Electromagnetic Effects in Ferrite/Barium Titanate Composite
https://doi.org/10.17073/1609-3577-2014-4-290-296
Abstract
New solutions for tensors of effective pyroelectro−magnetic properties of piezoactive composites on the basis of the solution of the boundary value problem of electro−magnetic elasticity have been obtained. For the solution of the boundary value problem, new solutions for singular components of the second derivative functions of Green for displacements, electric and magnetic potentials in homogeneous transversal isotropic piezo electro−magnetic medium with ellipsoidal grain of heterogeneity have been used. Calculation results of the concentration dependences for effective coefficients of pyromagnetic and electromagnetic coherence of ferrite/barium titanate composite with ellipsoidal, spherical, fibrous inclusions for various polydisperse structures and of composite with layered structure have been presented. Considerable influence of the shape of inclusions, features of relative positioning and inversion of properties of phases on the effective coefficients of pyromagnetic and electromagnetic coherence of the composite material have been revealed. The conclusion is drawn on the preferable use of the pyroelectric phase as spherical inclusions, and ferrite as the composite matrix. This allows for more than a five−fold increase in the effective constant of pyromagnetic coherence of the composite material in comparison with its value for the same structure but with inversion of properties of phases for constant volume fractions of the ferrite and pyroelectric phases.
About the Author
A. A. Pan’kov
Perm National Research Polytechnic University, 29 Komsomolsky prospekt, Perm 614990, Russia
Russian Federation
Russian Federation
Dr. Sci. (Phis.–Math.), Prof.
References
1. Korotkih, N. I., Matveev N. N., Sidorkin A. S. Pyroelectric properties of polyethylene oxide. Fizika tverdogo tela = Physics of the Solid State. 2009, vol. 51, no. 6, pp. 1215—1217. (In Russ.).
2. Smirnova E. P., Aleksandrov S. E., Sotnikov K. A., Kapralov A. A., Sotnikov A. V. Pyroelectric effect in solid solutions on the basis of a magnoniobat of lead. Fizika tverdogo tela = Physics of the Solid State. 2003, vol. 45, no. 7, pp. 1245—1249. (In Russ.)
3. Jarmarkin V. K., Shul’man S. G., Pankova G. A., Lemanov V. V. Pyroelectric properties of crystals of some connections on the basis of proteinaceous amino acids. Fizika tverdogo tela = Physics of the Solid State. 2005, vol. 47, no. 11, pp. 2047—2049. (In Russ.)
4. Kerimov M. K., Kurbanov M. A., Agaev F. G., Musaeva S. N., Kerimov Je. A. Pyroelectric effect in the composites crystallized in the conditions of effect of plasma of an electric discharge. Fizika tverdogo tela = Physics of the Solid State. 2005, vol. 47, no. 4, pp. 686—690. (In Russ.)
5. Karaljunas R. I. Effective thermopiezoelectric properties of layered composites. Mekhanika kompozitnykh materialov = Mechanics of Composite Materials. 1990, no. 5, pp. 823—830. (In Russ.).
6. Shepmepgop T. D. Teopija uppugosti mikponeodnopodnyh sped [Theory of elasticity of micro non−uniform medium]. Moscow: Nauka, 1976. 399 p. (In Russ.)
7. Horoshun L. P., Maslov B. P., Leshhenko P. V. Prognozirovanie jeffektivnyh svojstv p’ezoaktivnyh kompozitnyh materialov [Prediction of effective properties piezoactive composite materials]. Kiev: Naukova dumka, 1989. 208 p. (In Russ.)
8. Pan’kov A. A. Statisticheskaja mehanika p’ezokompozitov [Statistical mechanics of piezo composites]. Perm’: Izdatel’stvo Permskogo gosudarstvennogo tehnicheskogo universiteta, 2009. 480 p. (In Russ.)
9. Pan’kov, A. A. Coefficients of electromagnetic communication of a composite with piezo active phases. Fizicheskaya mezomekhanika = Physical Mesomechanics. 2011, vol. 14, no. 2, pp. 93—99. (In Russ.).
10. Kristensen R. Vvedenie v mehaniku kompozitov [Introduction to mechanics of composites]. Moscow: Mir, 1982. 334 p. (In Russ.)
11. Pan’kov A. A. Influence of a curvature of layers on coefficients of electromagnetic communication of piezo composite. Mekhanika kompozitsionnykh matepialov i konstpuktsii = Composite Mechanics And Design. 2012, vol. 18, no. 2, pp. 155—168. (In Russ.).
12. Getman I. P. About magnetoelectric effect in the piezo composites. Doklady akademii nauk SSSR. 1991, vol. 317, no. 2, pp. 341—343. (In Russ.)
Review
For citations:
Pan’kov A.A. Pyro – and Electromagnetic Effects in Ferrite/Barium Titanate Composite. Izvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki = Materials of Electronics Engineering. 2014;(4):290-296. (In Russ.) https://doi.org/10.17073/1609-3577-2014-4-290-296
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