Eur. Phys. J. B (2016) 89: 25
https://doi.org/10.1140/epjb/e2015-60490-9

Regular Article

Internal friction phenomena in composites based on PZT-type ferroelectric powder and ferrites^*

University of Silesia, Institute of Technology and Mechatronics, 12, Żytnia St., 41-200 Sosnowiec, Poland

^a e-mail: radoslaw.zachariasz@us.edu.pl

Received: 21 June 2015
Received in final form: 17 September 2015
Published online: 1 February 2016

Abstract

The aim of the work was to determine the phenomena of internal friction (mechanical losses) occurring in ferroelectric-ferromagnetic composites created based on PZT-type ferroelectric powder and ferrite. The composites were obtained using ceramic powders – multi-component PZT-type solid solutions with ferroelectric properties. Their magnetic component included zinc-nickel powder Ni_0.64Zn_0.36Fe₂O₄. 30 × 10 × 1 mm³ test specimens were obtained using free sintering. Temperature Q^-1(T) and amplitude Q^-1(ε) internal friction dependencies were determined. Wide high temperature maxima were observed with regard to the internal friction temperature dependencies obtained for the tested specimens. The conducted measurements of amplitude (isothermal) dependencies of internal friction Q^-1(ε) for the tested composites have allowed for interpreting the previously observed maximum on the temperature dependencies of internal friction.