Microwave assisted combustion synthesis and characterization of nickel ferrite nanoplatelets

Role of Ruthenium in the Dielectric, Magnetic Properties of Nickel Ferrite (Ru–NiFe2O4) Nanoparticles and Their Application in Hydrogen Sensors

“…The continuous rings, in accordance with the nanocrystalline signature, are sharply appearing, supporting the structural change in Ru–NiFe 2 O 4 NPs from amorphous to nanocrystalline with increasing the annealing temperature from 300 to 900 °C. 32…”

Role of Glycine-to-Nitrate Ratio in Physical and Magnetic Properties of Zn-Ferrite Powder

“…Since crystallite size, distribution of particle sizes, and interparticle spacing have the greatest impact on magnetism, so the ideal synthesis technique is the one that provides superior control over these parameters [9].In recent years, Zinc ferrite particles have been prepared using different chemical and physical methods, such as co-precipitation [10], conventional heating (CHM) method [11], Solvothermal route [12], and sol-gel method [13] etc. However, most of the routes use complex processes, elevated reaction temperatures, long reaction times, toxic reagents, and advanced processing [14]. Microwave combustion route is gaining much interest among researchers, because of its features such as environment friendly route, rapid heating, high reaction rate ,energy saving, and short reaction time [5].…”

Synthesis Condition and Treatment Assisted Tuning of Structural, Magnetic Properties and Bandgap of Ni Nano Ferrite

“…In contrast, divalent metal ions on B site are inverse spinel, and divalent metal ions on both A, B sites are mixed ferrites. Distribution of cations can be modified to tune the properties (structural, magnetic, bandgap), can be successfully done by synthesis conditions e. g. microwave-assisted synthesis [4], specific composition [5], thermal treatment [6], is valuable for their usage for magnetic resonance imaging [5], hyperthermia [7] for cancer treatment, photocatalysis for water purification [8].…”

“…Literature reports the synthesis of Ni ferrite by coprecipitation [5], via mechanical milling [9], hydrothermal synthesis [10], by microwave-assisted sol-gel synthesis, which has distinct advantages e. g. rapid heating, shorter time (as compared to conventional double sintering technique), rapid reaction, easy reproducibility, control over grain diameter [4] and is energy efficient synthesis protocol [11]. Among the mentioned synthesis techniques, a sol-gel auto-combustion method has distinct advantages, e. g. synthesis done at a relatively lower temperature ~110 o C (helpful in gaining control over grain diameter, is a key factor to tune structural, magnetic properties), spinel phase is obtained without sintering, is an energy-efficient protocol with lower thermal costs although the material quality is maintained.…”