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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 and Mossbauer Studies of Pb(Fe1/2Ta1/2)O3 Multiferroic Ceramics Sintered from Mechanoactivated Powders

A. A. GusevInstitute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, 630128, Novosibirsk, Russia
,
S. I. RaevskayaResearch Institute of Physics and Physical Faculty, Southern Federal University, 344090Rostov-on-Don, Russia
,
V. V. TitovResearch Institute of Physics and Physical Faculty, Southern Federal University, 344090Rostov-on-Don, Russia
,
E. G. AvvakumovInstitute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, 630128, Novosibirsk, Russia
,
V. P. IsupovInstitute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, 630128, Novosibirsk, Russia
,
I. P. RaevskiResearch Institute of Physics and Physical Faculty, Southern Federal University, 344090Rostov-on-Don, RussiaCorrespondence[email protected]
,
H. ChenInstitute of Applied Physics and Materials Engineering, Faculty of Science and Technology, University of Macau, Macau, China
,
C.-C. ChouNational Taiwan University of Science and Technology, Taipei, 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
,
A. V. BlazhevichResearch Institute of Physics and Physical Faculty, Southern Federal University, 344090Rostov-on-Don, Russia
,
D. A. SarychevResearch Institute of Physics and Physical Faculty, Southern Federal University, 344090Rostov-on-Don, Russia
,
V. V. StashenkoResearch Institute of Physics and Physical Faculty, Southern Federal University, 344090Rostov-on-Don, Russia
&
S. I. ShevtsovaResearch Institute of Physics and Physical Faculty, Southern Federal University, 344090Rostov-on-Don, Russia
 show all
Pages 41-51 | Received 15 Jul 2014, Accepted 30 Sep 2014, Published online: 11 Mar 2015
 
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Abstract

The effect of high-energy mechanical activation on dielectric and magnetic properties of PbFe1/2Ta1/2O3 (PFT) multiferroic was studied. Mössbauer studies have shown that the Neel temperature TN of the antiferromagnetic phase transition in PFT powders can be changed substantially by mechanical activation and subsequent annealing. The increase of TN by more than 70 K, as compared to PFT single crystal, was achieved in the mechanically activated PFT powder annealed at 700°C. Dielectric studies have shown that in contrast to ceramics obtained by usual sintering, PFT ceramics fabricated by sintering of the mechanoactivated powder does not show the relaxor-like behavior.

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