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Abstrakty
Mg substituted cobalt ferrite spinel powder samples with the general formula MgxCo1 – xFe2O4 (x = 0 to 0.25) were synthesized chemically through sol-gel method and annealed at 1100 °C for 2 h. They were initially screened for the structural and morphological properties by X-ray diffraction and field emission scanning electron microscopy, respectively. Vibrational properties of the samples were studied by Raman and infrared spectroscopies. X-ray diffraction confirmed the formation of single pure or near-pure phase with cubic spinel structure for all the samples with expected occupancy values. The field emission scanning electron microscopy revealed a decrease in the particle size with an increase in Mg concentration. Both structural and magnetic properties of the samples were characterized using Mössbauer spectroscopy while the magnetic properties were studied using vibrating sample magnetometry. The changes in magnetic moment of ions, their coupling with neighboring ions and cation exchange interactions were confirmed from the Mössbauer spectroscopy analysis. Saturation magnetization and coercivity values can be explained based on the Slater-Pauling curve. The magnetometry results showed a decrease in saturation magnetization of the samples with increase in Mg concentration.
Wydawca
Czasopismo
Rocznik
Tom
Strony
310--319
Opis fizyczny
Bibliogr. 46 poz., rys., tab.
Twórcy
autor
- Department of Physics, Andhra University, Visakhapatnam-530003, India
autor
- Korea Research Institute of Standards and Science, Daejeon 305-340, Korea
autor
- Indian Institute of Science, Bangalore-560012, India
autor
- Indian Institute of Science, Bangalore-560012, India
autor
- Department of Physics, Andhra University, Visakhapatnam-530003, India
Bibliografia
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Uwagi
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-7a78cde8-5d57-48dd-8159-eb03446a404c