Dielectric, magnetoelectric, structure, and dissipative properties and the Mössbauer effect in PbFe1/2Nb1/2O3 ceramics in wide frequency and temperature ranges

Autor:	D. A. Sarychev, A. V. Pavlenko, Yu. D. Zavorotnev, O. A. Bunina, O. N. Razumovskaya, Yu. A. Kuprina, A. V. Pashchenko, I. A. Osipenko, G. M. Konstantinov, I. N. Zakharchenko, L. A. Reznichenko, Yu. M. Gufan, A. N. Sadkov, S. A. Simonenko, Stanislav P. Kubrin, Konstantin Andryushin
Rok vydání:	2010
Předmět:	Materials science Condensed matter physics Field (physics) Mössbauer effect visual_art visual_art.visual_art_medium General Physics and Astronomy Curie temperature Dielectric loss Multiferroics Dielectric Ceramic Magnetic field
Zdroj:	Bulletin of the Russian Academy of Sciences: Physics. 74:1130-1134
ISSN:	1934-9432 1062-8738
DOI:	10.3103/s1062873810080277
Popis:	High-quality fine-grained ceramic samples of classical multiferroics PbFe1/2Nb1/2O3 (PFN) were synthesized. Their dielectric, magnetoelectric, and magnetic characteristics, including the Mossbauer effect, were measured over wide ranges of temperatures (10–1000 K) and field frequencies (from 25 Hz to 1 MHz). The temperature dependence of the dielectric loss exhibits a maximum between 150 and 170 K, likely due to magnetic ordering. The dependence of ɛ on the magnetic field displays an anomalous increase near the Curie temperature (370 K) that rises to 40% upon heating.
Databáze:	OpenAIRE
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