Nanocomposite containing vanadium oxide (V 2 O 5 ) and magnetite (Fe 3 O 4 ) doped with nickel (Ni) ion were synthesized according to the formula of Ni 0.1 Fe 2.9 O 4 /V 2 O 5 . The obtained composition was characterized by XRD, FTIR, FESEM. The FESEM micrograph shows that the existence of two different phases related to V 2 O 5 and Ni-Magnetite. Moreover,the roughness parameters have values of 281, 85 and 385nm for roughness average R a , root mean square roughness R q, Maximum height of roughness R T respectively. Moreover, the magnetic behavior of the sample was studied, and we found that by adding V 2 O 5 to Ni dopped magnetite, the curie temperature value was lowered from 750 o C to 625 o C. The activation energy was calculated and found to be 0.22 eV and 0.08 eV for 1000 Hz and 3MHz respectively.
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Rania Ramadan (2024) studied this question.
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