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Ferroelectrics Volume 475, 2015 - Issue 1: Proceedings of International Conference of Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials (PFM-2014) Part I of III
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SECTION A: MULTIFERROICS

Dielectric Properties of Undoped and Li-doped Pb(Fe1/2Nb1/2)O3 Ceramics Sintered from Mechanochemically Synthesized Powders

A. A. GusevInstitute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, 630128Novosibirsk, Russia
,
I. P. RaevskiResearch Institute of Physics and Physical Faculty, Southern Federal University, 344090Rostov-on-Don, RussiaCorrespondence[email protected]
,
E. G. AvvakumovInstitute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, 630128Novosibirsk, Russia
,
V. P. IsupovInstitute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, 630128Novosibirsk, Russia
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S. I. RaevskayaResearch Institute of Physics and Physical Faculty, Southern Federal University, 344090Rostov-on-Don, Russia
,
H. ChenInstitute of Applied Physics and Materials Engineering, Faculty of Science and Technology, University of Macau, Macau, China
,
V. V. TitovResearch Institute of Physics and Physical Faculty, Southern Federal University, 344090Rostov-on-Don, Russia
,
C.-C. ChouNational Taiwan University of Science and Technology, 106Taipei, Taiwan
,
S. P. KubrinResearch Institute of Physics and Physical Faculty, Southern Federal University, 344090Rostov-on-Don, Russia
,
S. V. TitovResearch Institute of Physics and Physical Faculty, Southern Federal University, 344090Rostov-on-Don, Russia
&
M. A. MalitskayaResearch Institute of Physics and Physical Faculty, Southern Federal University, 344090Rostov-on-Don, Russia
 show all
Pages 61-67 | Received 15 Jul 2014, Accepted 30 Sep 2014, Published online: 11 Mar 2015
 
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Abstract

Optimal sintering temperature of PbFe1/2Nb1/2O3 (PFN) ceramics is 1120–1150°C, but ceramics sintered in this temperature range have low resistivity and high losses. Mechanochemical synthesis allows one to lower the optimal sintering temperature of PFN ceramics down to 1000°C, however dielectric losses remain high and the permittivity exhibits large frequency dispersion. In the present work it has been found that similar to the case of the routine solid state synthesis, Li doping enables one to reduce dramatically the losses of the PFN ceramics obtained by sintering the mechanochemically synthesized powders.

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