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The magnetic and neutron diffraction studies of La.sub.1-x./sub.Sr.sub.x./sub.MnO.sub.3./sub. nanoparticles prepared via molten salt synthesis
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SYSNO ASEP 0435369 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The magnetic and neutron diffraction studies of La1-xSrxMnO3 nanoparticles prepared via molten salt synthesis Tvůrce(i) Kačenka, Michal (FZU-D) RID
Kaman, Ondřej (FZU-D) RID, ORCID
Jirák, Zdeněk (FZU-D) RID, ORCID, SAI
Maryško, Miroslav (FZU-D) RID
Veverka, Pavel (FZU-D) RID, ORCID
Veverka, Miroslav (FZU-D) RID
Vratislav, S. (CZ)Zdroj.dok. Journal of Solid State Chemistry. - : Elsevier - ISSN 0022-4596
Roč. 221, Jan (2015), s. 364-372Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova magnetic nanoparticles ; manganite ; molten salt synthesis ; neutron diffraction Vědní obor RIV BM - Fyzika pevných látek a magnetismus CEP GAP108/11/0807 GA ČR - Grantová agentura ČR Institucionální podpora FZU-D - RVO:68378271 UT WOS 000347263700051 DOI https://doi.org/10.1016/j.jssc.2014.10.024 Anotace Series ofsingle-phase La1-xSrxMnO3 nanoparticles (x¼0.25 0.47)with the size of about 50nm was prepared in molten NaNO2. TEM evidenced well dispersed particles that are not interconnected by sintering bridges in contrast to traditional products.Interestingly,some reduction of the perovskite cell volume, particularly at higherSr contents,was detected by XRD.Moreover,reduced magnetization and decreased Curie temperature in comparison to sol–gel samples were observed.Neutron diffraction analysis of the as-prepared nanoparticles and several comparative samples with x=0.37 indicated that the anomalous behavior of studied particles probably originate in the overdoped outer shell.The overdoping might result from both the surface oxygen chemisorption and from an increased Sr concentration in the shell. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2015
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