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