Pushing up the magnetisation values for iron oxide nanoparticles: Via zinc doping: X-ray studies on the particle's sub-nano structure of different synthesis routes

Szczerba W, Zukrowski J, Przybylski M, Sikora M, Safonova O, Shmeliov A, Nicolosi V, Schneider M, Granath T, Oppmann M, Strasser M, Mandel K (2016)

Publication Type: Journal article

Publication year: 2016

Journal

Physical Chemistry Chemical Physics Royal Society of Chemistry

Book Volume: 18

Pages Range: 25221-25229

Journal Issue: 36

DOI: 10.1039/c6cp04221j

Abstract

The maximum magnetisation (saturation magnetisation) obtainable for iron oxide nanoparticles can be increased by doping the nanocrystals with non-magnetic elements such as zinc. Herein, we closely study how only slightly different synthesis approaches towards such doped nanoparticles strongly influence the resulting sub-nano/atomic structure. We compare two co-precipitation approaches, where we only vary the base (NaOH versus NH3), and a thermal decomposition route. These methods are the most commonly applied ones for synthesising doped iron oxide nanoparticles. The measurable magnetisation change upon zinc doping is about the same for all systems. However, the sub-nano structure, which we studied with Mössbauer and X-ray absorption near edge spectroscopy, differs tremendously. We found evidence that a much more complex picture has to be drawn regarding what happens upon Zn doping compared to what textbooks tell us about the mechanism. Our work demonstrates that it is crucial to study the obtained structures very precisely when "playing" with the atomic order in iron oxide nanocrystals.

Authors with CRIS profile

Tim Granath
Karl Mandel

Involved external institutions

University of Science and Technology (AGH) / Akademia Górniczo-Hutnicza PL Poland (PL) Paul Scherrer Institute (PSI) CH Switzerland (CH) Fraunhofer Institut für Silicatforschung (ISC) DE Germany (DE) Trinity College Dublin IE Ireland (IE) Julius-Maximilians-Universität Würzburg DE Germany (DE) Bundesanstalt für Materialforschung und -prüfung (BAM) DE Germany (DE) Fraunhofer-Institut für Grenzflächen- und Bioverfahrenstechnik IGB / Fraunhofer Institute for Interfacial Engineering and Biotechnology DE Germany (DE)

How to cite

APA:

Szczerba, W., Zukrowski, J., Przybylski, M., Sikora, M., Safonova, O., Shmeliov, A.,... Mandel, K. (2016). Pushing up the magnetisation values for iron oxide nanoparticles: Via zinc doping: X-ray studies on the particle's sub-nano structure of different synthesis routes. Physical Chemistry Chemical Physics, 18(36), 25221-25229. https://dx.doi.org/10.1039/c6cp04221j

MLA:

Szczerba, Wojciech, et al. "Pushing up the magnetisation values for iron oxide nanoparticles: Via zinc doping: X-ray studies on the particle's sub-nano structure of different synthesis routes." Physical Chemistry Chemical Physics 18.36 (2016): 25221-25229.

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