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[en] In this paper we summarize the results obtained as a by product of γ-Fe_2O_3 and CoFe_2O_4 sensors testing. Monodisperse γ-Fe_2O_3 and CoFe_2O_4 NPs with the size of 6.4 ± 0.6 and 7.6 ± 0.6 nm, respectively, were synthesized by high-temperature solution phase reaction from methyl acetylacetonates. The thickness of surfactant is 1 nm and 0.8 nm for two types of NPs, respectively. Surfactant stops the growth of NPs at a certain size. The self-assembled NP monolayers were prepared by Langmuir-Blodgett technique from the colloid solutions spread on the water sub-phase in a standard LB trough. M = 1, 2, 4 or 10 NP monolayers (L) were deposited onto auxiliary oxidized Si substrates or onto 2 mm x 2 mm Al_2O_3 sensor substrates equipped with 20 nm Ti/500 nm Pt comb electrodes to read the measuring current and with 20 nm Ti/500 nm Pt meander on the back side for the heating of the structure to a working temperature. Material properties of NPs and arrays were studied by SEM/EDS, GI XRD, GISAXS, XANES and ellipsometry. (authors)
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Vajda, J. (ed.) (Institute of Nuclear and Physical Engineering, Institute of Electronics and Photonics, Faculty of Electrical Engineering and Information Technology, Slovak Univ. of Technology, Bratislava (Slovakia)); Jamnicky, I. (ed.) (Dept. of Physics,, Faculty of Electrical Engineering, University of Zilina, Zilina (Slovakia)); Institute of Nuclear and Physical Engineering, Institute of Electronics and Photonics, Faculty of Electrical Engineering and Information Technology, Slovak Univ. of Technology, Bratislava (Slovakia); Alumni Club of the Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, Bratislava (Slovakia); Dept. of Physicsand Institute of Aurel Stodola, Faculty of Electrical Engineering, University of Zilina, Zilina (Slovakia); Slovak Physical Society, Bratislava (Slovakia); Institute of Physics, Slovak Academy of Sciences, Bratislava (Slovakia); Slovak Physical Society, Bratislava (Slovakia); Institut Francais-Slovaque, Bratislava (Slovakia). Funding organisation: Sponsors: Slovenske Elektrarne, a. s., Bratislava (Slovakia); Slovak Nuclear Society, Trnava (Slovakia); Institut Francais Slovaquie, Bratislava (Slovakia); 302 p; ISBN 978-80-227-3956-6; 
; 5 Jun 2013; p. 11-14; APCOM 2013: 19. International Conference on Applied Physics of Condensed Matter; Strbske Pleso (Slovakia); 19-21 Jun 2013; GRANT VEGA-2/0162/12; CNR-SAS PROJECT 2013-2015; CENTRE OF EXCELLENCE SAS FUN-MA; Also available from http://kf.elf.stuba.sk/∼apcom/apcom13/proceedings/; 1 tab., 4 figs., 15 refs.
; 5 Jun 2013; p. 11-14; APCOM 2013: 19. International Conference on Applied Physics of Condensed Matter; Strbske Pleso (Slovakia); 19-21 Jun 2013; GRANT VEGA-2/0162/12; CNR-SAS PROJECT 2013-2015; CENTRE OF EXCELLENCE SAS FUN-MA; Also available from http://kf.elf.stuba.sk/∼apcom/apcom13/proceedings/; 1 tab., 4 figs., 15 refs.