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Distribution of cations in nanosize and bulk Co-Zn ferrites
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SYSNO ASEP 0367335 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Distribution of cations in nanosize and bulk Co-Zn ferrites Author(s) Veverka, Miroslav (FZU-D) RID
Jirák, Zdeněk (FZU-D) RID, ORCID, SAI
Kaman, Ondřej (FZU-D) RID, ORCID
Knížek, Karel (FZU-D) RID, ORCID
Maryško, Miroslav (FZU-D) RID
Pollert, Emil (FZU-D)
Závěta, K. (CZ)
Lančok, Adriana (UACH-T) ORCID, RID, SAI
Dlouhá, M. (CZ)
Vratislav, S. (CZ)Source Title Nanotechnology. - : Institute of Physics Publishing - ISSN 0957-4484
Roč. 22, č. 34 (2011), 345701/1-345701/7Number of pages 7 s. Language eng - English Country GB - United Kingdom Keywords cobalt zinc ferrites ; nanoparticles distribution of cations Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects GAP204/10/0035 GA ČR - Czech Science Foundation (CSF) GAP108/11/0807 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z10100521 - FZU-D (2005-2011) AV0Z40320502 - UACH-T (2005-2011) UT WOS 000294715800007 DOI 10.1088/0957-4484/22/34/345701 Annotation The structural and magnetic properties of Co1-xZnxFe2O4 ferrites (Co-Zn ferrites) are investigated in a narrow compositional range around x = 0.6, which is of interest because of applications in magnetic fluid hyperthermia. The study by x-ray and neutron diffraction, Mössbauer spectroscopy and magnetization measurements is done on nanoparticles prepared by the coprecipitation method and bulk samples sintered at high temperatures. In spite of the known preference of Zn2+ for tetrahedral (A) sites and Co2+ for octahedral [B] sites, the cations are distributed nearly evenly over the two sites of spinel structure and there is also a variable number of [B] site vacancies, making cobalt ions trivalent. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2012
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