Ac-conductivity and structural, magnetic, dielectric, and photocatalytic properties of Gd doped BiFeO3 nanoparticles
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F26%3A0199167" target="_blank" >RIV/00216305:26220/26:0199167 - isvavai.cz</a>
Result on the web
<a href="https://pubs.rsc.org/en/content/articlelanding/2025/tc/d5tc01606a" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2025/tc/d5tc01606a</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d5tc01606a" target="_blank" >10.1039/d5tc01606a</a>
Alternative languages
Result language
angličtina
Original language name
Ac-conductivity and structural, magnetic, dielectric, and photocatalytic properties of Gd doped BiFeO3 nanoparticles
Original language description
In this study, a series of Bi1-xGdxFeO3 (x = 0, 0.05, 0.1, 0.15, and 0.2) samples synthesized by a combustion method were investigated. The effect of Gd dopant on the crystal structure, morphology, magnetic, electrical and photocatalytic properties of nanoparticles was studied. X-ray diffraction showed that the samples with x = 0.1 and 0.15 contain two-phase systems R3c + Pbam and R3c + Pnma, respectively. UV-vis spectroscopy showed that the optical band gap lies in the range of 2.08-1.94 eV, which implies possible applications in the visible spectrum. The samples demonstrated ferromagnetic behavior with the highest magnetization values for Bi0.9Gd0.1FeO3. Three anomalies were found in the temperature dependences of the permittivity epsilon '(T) in the temperature range of similar to 250 degrees C to similar to 310 degrees C and TN. The absence of an unambiguous dependence of the dielectric characteristics with increasing Gd concentration was observed. The frequency dependence of the conductivity sigma ac(omega) at different temperatures was analyzed based on the universal Jonscher's power law sigma similar to omega s. The frequency dependence of the conductivity sigma ac was interpreted within the framework of the correlated barrier jumping (CBH) model. The plots of ln sigma acvs. 103/T revealed the presence of various thermally activated conductivity mechanisms. A positive effect of the Gd dopant on the improvement of the photocatalytic properties of BiFeO3 was established.
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
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2025
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 Materials Chemistry C
ISSN
2050-7526
e-ISSN
2050-7534
Volume of the periodical
36
Issue of the periodical within the volume
04 Aug 2025
Country of publishing house
GB - UNITED KINGDOM
Number of pages
18
Pages from-to
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UT code for WoS article
001554798000001
EID of the result in the Scopus database
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