Electron microscopy, X-Ray diffraction and Mossbauer studies of PbFe0.5Nb0.5O3, PbFe0.5Ta0.5O3 and BaFe0.5Nb0.5O3 ceramics sintered from mechanoactivated nanopowders

A A Gusev,S I Raevskaya,V V Titov,V P Isupov,E G Avvakumov,I P Raevski,H Chen,C.-C Chou,S P Kubrin,S V Titov,M A Malitskaya,D A Sarychev,V V Stashenko,S I Shevtsova

doi:10.1080/00150193.2016.1157742

Electron microscopy, X-Ray diffraction and Mossbauer studies of PbFe0.5Nb0.5O3, PbFe0.5Ta0.5O3 and BaFe0.5Nb0.5O3 ceramics sintered from mechanoactivated nanopowders

A A Gusev, S I Raevskaya + Show 12 more

https://doi.org/10.1080/00150193.2016.1157742

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Journal: Ferroelectrics	Publication Date: Apr 15, 2016
Citations: 21

Affiliation: Southern Federal University, Institute of Solid State Chemistry and Mechanochemistry, University of Macau, National Taiwan University of Science and Technology

#Non-activated Powders #Magnetic Transition Temperature TM + Show 8 more

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Abstract

ABSTRACTThe effect of high-energy mechanical activation on magnetic phase transition temperature TM of PbFe0.5Nb0.5O3, PbFe0.5Ta0.5O3, and BaFe0.5Nb0.5O3 perovskites has been studied. Mossbauer studies have shown that TM values in all the perovskites studied can be changed substantially by mechanical activation and subsequent annealing. The increase of TM by 40-50 K, as compared to corresponding single crystals and ceramics sintered from the non-activated powders, was achieved in the mechanoactivated powders of both lead-containing and lead-free perovskites studied.

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