Review on magnetic spinel ferrite (MFe2O4) nanoparticles: From synthesis to application

Crystal structure and peculiarities of microwave parameters of Co1−xNixFe2O4 nano spinel ferrites

“…The cobalt-based ferrite has the formula CoFe 2 O 4 , exhibits the highest magnetocrystalline anisotropy among all spinels, and is therefore characterized as a hard-magnetic material. 29,30 At the same time, nickel-based ferrite with the formula NiFe 2 O 4 has a low coercive force and high saturation magnetization, which makes it a so magnetic material. 31 Both cobalt and nickel ferrites crystallize into inverse spinels when trivalent iron cations equally occupy both tetrahedral and octahedral positions.…”

“…So, incorporating both Co and Ni into the ferrite structure thus provides a balanced set of properties, achieving enhanced magnetic anisotropy and tunability, making the material more versatile for electromagnetic wave absorption applications. [29][30][31][32][33][34][35][36][37][38] The authors of this study discuss the crystal structure and peculiarities of microwave parameters of Co 1−x Ni x Fe 2 O 4 (where x = 0.0-1.0) nano-spinel ferrites or CNFO synthesized by the citrate-nitrate auto-combustion method.…”

“…So, incorporating both Co and Ni into the ferrite structure thus provides a balanced set of properties, achieving enhanced magnetic anisotropy and tunability, making the material more versatile for electromagnetic wave absorption applications. 29–38…”

Enhancement of electrical parameters of PANI—A conducting polymer with low concentration nanofiller for optoelectronic and electrical application

“…The use of ferrite nanoparticles in magnetic drug targeting, tissue engineering, DNA separation, contrast agents for magnetic resonance imaging, and hyperthermia has been demonstrated 9,10 . The kind of magnetic ions that reside on the tetrahedral (A) and octahedral (B) sites in the crystal lattice control the physical properties of spinal ferrites, including their electrical, magnetic, and elastic properties 11 . Ferrites are therefore a strong filler material for the production of nanocomposite due to their favorable features.…”

Synthesis and Characterization of Superparamagnetic Iron Oxide Nanoparticles: A Series of Laboratory Experiments

“…There are several examples of inquiry-based undergraduate teaching laboratories exploring fundamental nanoengineering concepts − and training students in various nanocharacterization techniques. , One family of nanomaterials commonly incorporated into teaching laboratories is optically responsive nanoparticles, including gold nanoparticles − and fluorescent quantum dots. ,, While these materials serve as an ideal platform for exploring complex quantum concepts, such as the discretization of energy states , and manipulation of light at the nanoscale, , the notable properties of these nanoparticles are limited to geometry and optical response. In contrast, nanomaterials can demonstrate a plethora of behaviors, including mechanical, optical, ,, electrical, chemical, and more. − One unique nanomaterial is iron oxide nanoparticles. Unlike quantum dots or metal nanoparticles, iron oxide nanoparticles exhibit size- and shape-tunable magnetic behavior. ,− As a result of their magnetic response and low biotoxicity, iron oxide nanoparticles show promise in a wide range of applications and fields, including biomedical devices and imaging, energy storage and generation, and chemical processing. ,,− Thus, given their synergistic relationship to existing undergraduate nanoparticle laboratories and their emerging real-world applications, the synthesis and characterization of iron oxide nanoparticles provide a rich foundation for integration into an academic laboratory course …”