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57Fe-enriched perovskites M(Fe0.5Nb0.5)O3 (M – Pb, Ba) studied by Mössbauer spectroscopy, NMR and XRD in the wide temperature range 4.2–533 K
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SYSNO ASEP 0497826 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title 57Fe-enriched perovskites M(Fe0.5Nb0.5)O3 (M – Pb, Ba) studied by Mössbauer spectroscopy, NMR and XRD in the wide temperature range 4.2–533 K Author(s) Kmjec, T. (CZ)
Adamec, M. (CZ)
Kubániová, D. (CZ)
Plocek, Jiří (UACH-T) RID, ORCID, SAI
Dopita, M. (CZ)
Česnek, M. (CZ)
Chlan, V. (CZ)
Bednarčík, J. (DE)
Závěta, K. (CZ)
Maryško, Miroslav (FZU-D) RID
Kohout, J. (CZ)Number of authors 11 Source Title Journal of Magnetism and Magnetic Materials. - : Elsevier - ISSN 0304-8853
Roč. 475, APR (2019), s. 334-344Number of pages 11 s. Action Joint European Magnetic Symposia /9./ JEMS 2018 Event date 03.09.2018 - 07.09.2018 VEvent location Mainz Country DE - Germany Event type WRD Language eng - English Country NL - Netherlands Keywords Hyperfine interactions ; Lead/barium-iron niobate ; Magnetic ordering ; Multiferroics ; Mössbauer spectroscopy ; NMR ; Transition temperature ; XRD Subject RIV CA - Inorganic Chemistry OECD category Inorganic and nuclear chemistry Subject RIV - cooperation Institute of Physics - Solid Matter Physics ; Magnetism Method of publishing Open access with time embargo (01.04.2021) Institutional support UACH-T - RVO:61388980 ; FZU-D - RVO:68378271 UT WOS 000458152000050 EID SCOPUS 85057550770 DOI 10.1016/j.jmmm.2018.11.087 Annotation The 57Fe enriched almost single-phase perovskites Pb(Fe0.5Nb0.5)O3 (PFN) and Ba(Fe0.5Nb0.5)O3 (BFN), prepared by a ceramic method (solid-state synthesis), were studied by Mössbauer spectroscopy, nuclear magnetic resonance (NMR), conventional and synchrotron X-ray powder diffraction (XRD). The temperature dependences of hyperfine and structural parameters of PFN, BFN from 4.2 K to temperatures above ferroelectric ordering of PFN (TS ∼ 375 K), with attention to the values of magnetic and structural transitions, were obtained. The antiferromagnetic magnetic ordering transitions were found under the Néel temperatures TN ∼ 167(3) K and 32(2) K for BFN and PFN, respectively. The spin-glass transition was at TG ∼ 10(3) K and 20(5) K for BFN and PFN, respectively. In PFN sample a small change of structural parameters around TN and structural change from trigonal to cubic structure at T ∼ 400 K was observed by XRD. The temperature dependence of XRD shows stable cubic structure in the temperature range from 4.2 K to 530 K for BFN. From Mössbauer and NMR spectroscopies it is found that both structures have perturbed environments for Nb and Fe. However, in case of PFN the low values of transferred hyperfine fields disfavour random Fe/Nb arrangement and allow proposing a picture of Fe/Nb arrangement. Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2020 Electronic address http://hdl.handle.net/11104/0293949
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