التفاصيل البيبلوغرافية
| العنوان: |
Structural, dielectric, impedance and electric modulus properties of praseodymium-substituted BaPrxFe12-X O19 nanoparticles synthesized via sol–gel method. |
| المؤلفون: |
Samiullah, Asghar, H. M. Noor ul Huda Khan, Gilani, Zaheer Abbas, Khalid, Muhammad, Ahmed, Awais, Khan, Abdul Kareem, Khan, Mohammad Rizwan, Sheikh, Furhaj Ahmed, Ahmad, Naushad, Busquets, Rosa |
| المصدر: |
Applied Physics A: Materials Science & Processing; 9/1/2022, Vol. 128 Issue 9, p1-8, 8p |
| مستخلص: |
In current research work, Pr3+ doped M-type hexaferrites having general formula BaPrxFe12-xO19 (0.00 < x > 1.00 with 0.25 steps) were synthesized using sol–gel technique. The prepared nanoparticles were characterized via XRD for structural Study, FTIR to study the frequency band, SEM was used to investigate the morphological surface, spectroscopic impedance was used to investigate the dielectric properties and VSM was used to study magnetic properties of the prepared nanoparticles. XRD pattern for each doping case confirmed the prepared samples having hexagonal phase. The crystalline sizes were determined from 5 to 13 nm range. Lattice constants were measured to be increased with increasing Pr3+ concentration. FTIR analysis was performed to analyze absorption band spectra. LCR meter was used to investigate the impedance, dielectric constant, electric modulus, loss tangent, and A.C conduction of the synthesized samples. From the study of dielectric, properties carried out by Maxwell Wagner model, where a constant of dielectric was found reduced in MHz’s of range of frequency, while at high frequency two relaxation peaks were observed by electron hopping of Fe2+ to Fe3+ ion. Reduction in both real and imaginary impedance caused decreasing trends due to the action of grain boundary. The Pr3+ doping has influenced the magnetic properties of the synthesized nanoparticles. The prepared material exhibited to be hard ferrite, having small crystallite size at high concentration of Pr3+ doping. Finally, by the excellent electric and magnetic properties, the prepared particles have a good potential for the applications of recording media, cancer treatment, drug delivery and high frequency devices. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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