Abstract
Ferrites samples Mg1-xLixFe2O4 for x = 0.0, 0.1, 0.2, 0.3, were synthesized by solid-state sintering method. Detailed investigations were made on the structural, morphological, magnetic and electrical proprieties of these samples. A detailed investigation was performed on power generation of these samples and role of Li-doping has been discussed. The X-ray Diffraction (XRD) pattern confirms the spinel phase formation in samples without any impurity. It is observed from Scanning Electron Microscopy that average grain size of samples decreases with lithium doping in MgFe2O4. The saturation magnetization of MgFe2O4 (15.4 emu/g) is found to increase with Lithium percentage and maximum 39.3 emu/g for Mg0.7Li0.3Fe2O4 sample. Ferrites play a crucial role in magnetic recording, microwave magnetic devices and many applications in medical sciences. Recently, it was observed that ferrites can be an alternate source of green energy by inventing hydroelectric cell (HEC). The processes of water adsorption and dissociation on the metal-oxide surface, plays an important role in production of electricity in ferrites. When, water is sprayed on hydroelectric cell the thermodynamic driving force is responsible for the formation of stable metal-oxygen or metal-hydroxyl bonds. The reactivity of ferrite surface towards water is based on the interaction of these ions and the d orbital of the Fe atom. Due to this interaction, water dissociated in H3O+ and OH− ions and migrates toward silver and zinc electrodes respectively. A typical hydroelectric cell of 2 inch diameter produces 17.1 mA of peak current and 949 mV voltage with a maximum output power of 15.85 mW for Li = 0.2 doped MgFe2O4 sample.
Highlights
Ferrites belong to a group of magnetic materials extensively used in many applications such as microwave devices, computer memory chip, magnetic recording media, radio frequency coil fabrication, transformer cores, rod antennas and many branches of telecommunication and electronic engineering [1, 2, 3, 4, 5]
FullProf programme have been used for Rietveld refinement technique to analyze the XRD patterns of samples
Polycrystalline Mg1-xLixFe2O4 (0.0 x 0.3) ferrite samples have been synthesized by solid state method
Summary
Ferrites belong to a group of magnetic materials extensively used in many applications such as microwave devices, computer memory chip, magnetic recording media, radio frequency coil fabrication, transformer cores, rod antennas and many branches of telecommunication and electronic engineering [1, 2, 3, 4, 5]. The structure of spinel ferrite is complex, which consists of a cubic closed-packed array of 32 oxide ions, which forms 64 tetrahedral and 32 octahedral site in one unit cell [containing eight formula units (M2þFe23þO4)8]. These unit cells contain two kinds of sites. The distribution of cations among the tetrahedral and octahedral site play an important role in deciding the electric, dielectric, magnetic and structural properties of spinel ferrites [9, 10]. A detailed investigation has been made on electric current and voltage generated by a series of samples of Mg1-xLixFe2O4
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call