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Structural, dielectric, electrical and magnetic properties of CuFe2O4 nanoparticles synthesized by honey mediated sol–gel combustion method and annealing effect

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dc.title Structural, dielectric, electrical and magnetic properties of CuFe2O4 nanoparticles synthesized by honey mediated sol–gel combustion method and annealing effect en
dc.contributor.author Yadav, Raghvendra Singh
dc.contributor.author Kuřitka, Ivo
dc.contributor.author Vilčáková, Jarmila
dc.contributor.author Havlica, Jaromír
dc.contributor.author Másilko, Jiří
dc.contributor.author Kalina, Lukáš
dc.contributor.author Tkacz, Jakub
dc.contributor.author Hajdúchová, Miroslava
dc.contributor.author Enev, Vojtech
dc.relation.ispartof Journal of Materials Science: Materials in Electronics
dc.identifier.issn 0957-4522 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2017
utb.relation.volume 28
utb.relation.issue 8
dc.citation.spage 6245
dc.citation.epage 6261
dc.type article
dc.language.iso en
dc.publisher Springer
dc.identifier.doi 10.1007/s10854-016-6305-4
dc.relation.uri https://link.springer.com/article/10.1007/s10854-016-6305-4
dc.description.abstract In this work, CuFe2O4 nanoparticles were synthesized by natural source of glucose and fructose (i.e., honey)—mediated sol–gel auto-combustion method. Grain size, cation distribution and crystal phase were further tuned through annealing at higher temperature 500, 700, 900 and 1100 °C. The structural investigation was performed using powder X-ray Diffraction, Raman Spectroscopy, Fourier Transform Infrared Spectroscopy, Scanning Electron Microscopy, Energy Dispersive X-ray Spectroscopy and X-ray Photoelectron Spectroscopy. X-ray diffraction study confirmed the phase transformation from cubic to tetragonal as a function of annealing temperature. Magnetic properties were investigated by using vibrating sample magnetometer under an applied magnetic field of 10 kOe at room temperature. The highest value of saturation magnetization (Ms) was 26 emu/g for ferrite nanoparticles annealed at 1100 °C, whereas the lowest value was 11 emu/g for annealed at 700 °C. The highest and lowest coercivity (Hc) was 1389 and 65 Oe for ferrite nanoparticles annealed at 900 and 1100 °C, respectively. Detailed study of modulus and impedance spectroscopy revealed the contribution of grain and grain boundary on electrical transport mechanism and relaxation process. Further, dependence of relaxation time, resistance and capacitance at grain and grain boundary on grain size, cation distribution and annealing temperature was noticed. The asymmetry of peak in imaginary part of modulus spectra indicates that the relaxation process is non-Debye type. At lower frequency, ac conductivity is frequency independent, whereas, at high frequency, it follows an apparent power law, σ(ω) α ωs. Dielectric parameters (real and imaginary part, dielectric loss) with variation of frequency (1 Hz to 10 MHz) are investigated and dependence with frequency and annealing temperature is observed. © 2017, Springer Science+Business Media New York. en
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1007090
utb.identifier.obdid 43877166
utb.identifier.scopus 2-s2.0-85011798945
utb.identifier.wok 000398719900063
utb.source j-scopus
dc.date.accessioned 2017-07-25T08:54:56Z
dc.date.available 2017-07-25T08:54:56Z
dc.description.sponsorship Ministry of Education, Youth and Sports of the Czech Republic - Program NPU I [LO1504]
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Yadav, Raghvendra Singh
utb.contributor.internalauthor Kuřitka, Ivo
utb.contributor.internalauthor Vilčáková, Jarmila
utb.fulltext.affiliation Raghvendra Singh Yadav 1,* · Ivo Kuřitka 1 · Jarmila Vilcakova 1 · Jaromir Havlica 2 · Jiri Masilko 2 · Lukas Kalina 2 · Jakub Tkacz 2 · Miroslava Hajdúchová 2 · Vojtěch Enev 2 * Raghvendra Singh Yadav yadav@cps.utb.cz; raghvendra.nac@gmail.com 1 Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida Tomase Bati 5678, 760 01 Zlín, Czech Republic 2 Materials Research Centre, Brno University of Technology, Purkyňova 464/118, 61200 Brno, Czech Republic
utb.fulltext.dates Received: 7 December 2016 / Accepted: 27 December 2016 / Published online: 9 February 2017
utb.fulltext.sponsorship This work was supported by the Ministry of Education, Youth and Sports of the Czech Republic – Program NPU I (LO1504). We also acknowledge the support of the Internal Grant Agency of Tomas Bata University in Zlín (number: IGA/CPS/2015/006).
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