Cation ordering, ferrimagnetism and ferroelectric relaxor behavior in Pb(Fe1−xScx)2∕3W1∕3O3 solid solutions

Sergey A. Ivanov, Premysl Beran, Alexandr A. Bush, Tapati Sarkar, Samrand Shafeie, Duo Wang, Biplab Sanyal, Olle Eriksson, Martin Sahlberg, Yaroslav Kvashnin, Roland Tellgren, Per Nordblad and Roland Mathieu ()
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Sergey A. Ivanov: Center of Materials Science, Karpov Institute of Physical Chemistry
Premysl Beran: CAS
Alexandr A. Bush: Moscow Technological University
Tapati Sarkar: Uppsala University
Samrand Shafeie: Ångstrom Laboratory, Uppsala University
Duo Wang: Uppsala University
Biplab Sanyal: Uppsala University
Olle Eriksson: Uppsala University
Martin Sahlberg: Ångstrom Laboratory, Uppsala University
Yaroslav Kvashnin: Uppsala University
Roland Tellgren: Ångstrom Laboratory, Uppsala University
Per Nordblad: Uppsala University
Roland Mathieu: Uppsala University

The European Physical Journal B: Condensed Matter and Complex Systems, 2019, vol. 92, issue 8, 1-16

Abstract: Abstract Ceramic samples of the multiferroic perovskite Pb(Fe1−xScx)2∕3W1∕3O3 with 0 ≤ x ≤ 0.4 have been synthesized using a conventional solid-state reaction method, and investigated experimentally and theoretically using first-principle calculations. Rietveld analyses of joint synchrotron X-ray and neutron diffraction patterns show the formation of a pure crystalline phase with cubic (Fm3̅m) structure with partial ordering in the B-sites. The replacement of Fe by Sc leads to the increase of the cation order between the B′ and B′′ sites. As the non-magnetic Sc3+ ions replace the magnetic Fe3+ cations, the antiferromagnetic state of PbFe2∕3W1∕3O3 is turned into a ferrimagnetic state reflecting the different magnitude of the magnetic moments on the B′ and B′′ sites. The materials remain ferroelectric relaxors with increasing Sc content. Results from experiments on annealed and quenched samples show that the cooling rate after high temperature annealing controls the degree of cationic order in Pb(Fe1−xScx)2∕3W1∕3O3 and possibly also in the undoped PbFe2∕3W1∕3O3. Graphical abstract

Keywords: Solid; State; and; Materials (search for similar items in EconPapers)
Date: 2019
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DOI: 10.1140/epjb/e2019-100149-9

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