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Cation Migration-Induced Crystal Phase Transformation in Copper Ferrite Nanoparticles and Their Magnetic Property

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F16%3A43874343" target="_blank" >RIV/70883521:28610/16:43874343 - isvavai.cz</a>

  • Alternative codes found

    RIV/00216305:26310/16:PU119734

  • Result on the web

    <a href="http://link.springer.com/article/10.1007/s10948-015-3339-4" target="_blank" >http://link.springer.com/article/10.1007/s10948-015-3339-4</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1007/s10948-015-3339-4" target="_blank" >10.1007/s10948-015-3339-4</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Cation Migration-Induced Crystal Phase Transformation in Copper Ferrite Nanoparticles and Their Magnetic Property

  • Original language description

    Impact of crystal phase evolution on structural and magnetic properties of copper ferrite nanoparticles is studied and reported. The copper ferrite nanoparticles were synthesized by starch-assisted sol-gel auto-combustion method and further annealed at 200, 500, 800, and 1100oC. The X-ray diffraction study indicated phase evolution from cubic to tetragonal with increase of annealing temperature. Raman spectroscopy and Fourier transform infrared spectroscopy study revealed the impact of phase transformation and cation redistribution in copper ferrite nanoparticles with increase of annealing temperature. X-ray photoelectron study revealed the cation migration with annealing temperature, which is responsible for structural phase evolution. The field emission-scanning electron microscopy (FE-SEM) study revealed that the ferrite nanoparticles at a lower annealing temperature (200, 500, and 800oC) were agglomerated spherical and elongated particles in the grain size range 10-100 nm. However, at a higher annealing temperature (1100oC), it was hexagonal plate-like particles in the grain size range 50-200 nm. The increase in saturation magnetization (Ms) from 11.60 emu/g (200oC) to 25.48 emu/g (1100oC) with grain growth and crystal phase evolution (i.e., increase of c/a ratio and cation redistribution in CuFe2O4 mixed spinel ferrite) was noticed. In addition, a crystal phase evolution from cubic to tetragonal and a grain growth as a function of annealing temperature both cause also an increase in coercivity (Hc) value from 132.56 Oe (200 oC) to 1442.50 Oe (800 oC) Furthermore, the decrease of coercivity (Hc) value from 1442.50 Oe (800oC) to 218.06 Oe (1100oC) with increase of annealing temperature was due to the "pinning" effect of domain wall at the grain boundary.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BM - Solid-state physics and magnetism

  • OECD FORD branch

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2016

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Superconductivity and Novel Magnetism

  • ISSN

    1557-1939

  • e-ISSN

  • Volume of the periodical

    29

  • Issue of the periodical within the volume

    3

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    11

  • Pages from-to

    759-769

  • UT code for WoS article

    000371089500042

  • EID of the result in the Scopus database

    2-s2.0-84958743266