Dosimetry induced modifications in structural, magnetic and Mössbauer spectroscopy studies of 60Co γ-irradiated Co0.5Ni0.5Fe2O4
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F21%3A73607918" target="_blank" >RIV/61989592:15310/21:73607918 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0969806X2100431X" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0969806X2100431X</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.radphyschem.2021.109781" target="_blank" >10.1016/j.radphyschem.2021.109781</a>
Alternative languages
Result language
angličtina
Original language name
Dosimetry induced modifications in structural, magnetic and Mössbauer spectroscopy studies of 60Co γ-irradiated Co0.5Ni0.5Fe2O4
Original language description
In the present work, we report structure, magnetic and Mössbauer spectroscopic studies of nanocrystalline Co0.5Ni0.5Fe2O4 ferrites irradiated with different doses (0, 50 and 100 kGy) of 60Co γ-irradiation. Samples are synthesized by solution combustion route. γ-Irradiation of all nanoparticles preserves the stable spinel cubic (Fd-3m) structure, as confirmed by X-ray diffractogram. XRD analysis reveals that the lattice parameter found in the range of 8.339–8.361 Å. The lattice parameter increased after gamma irradiation. FTIR spectra shows two absorption bands, which confirms the formation of spinel cubic structure. The magnetic behavior of the samples was further investigated using a Vibrating sample magnetometer and Mössbauer spectroscopy. The saturation magnetization found in the range of 55.39–47.81 emu/g. The saturation magnetization and remnant magnetizations of the pristine samples persist even after irradiation also. The magnetic coercivity found in the range of 931–892 Oe. The coercivity decreases with irradiation, indicating a reduction of magnetic anisotropy in the nanoparticles. After γ-irradiation, the redistribution of cations among the A-site and B-site with dose the magnetic coercivity in the samples brings down in the nanoparticles. At low temperature (14 K) and room temperature, Mössbauer spectroscopy has been done to thorough the hyperfine structure of unirradiated and irradiated nanoparticles. The spectral parameters related to the occupation of Fe3+ ions at the A-site and B-site. The variation in magnetic properties is due to the cation redistribution among A and B interstices. These emerge are cautious to comprehend the nature and stability of the magnetic strength of Co0.5Ni0.5 ferrite nanoparticles.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10304 - Nuclear physics
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
RADIATION PHYSICS AND CHEMISTRY
ISSN
0969-806X
e-ISSN
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Volume of the periodical
189
Issue of the periodical within the volume
DEC
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
"109781-1"-"109781-8"
UT code for WoS article
000702914700008
EID of the result in the Scopus database
2-s2.0-85114668968