Unary doping effect of A2+ (A = Zn, Co, Ni) on the structural, electrical and magnetic properties of substituted iron oxide nanostructures

Removal of Ferrimagnetic ZnFe2O4 Impurity Phase by Li Co-Doping in Fe Doped ZnO

“…Such weak FM can be interpreted in terms of defect induced bound magnetic polaron (BMP) model. 26 A ferromagnetic interaction between two Fe ions can be mediated by a BMP. However, since the system contains both Fe 2+ (low concentration) and Fe 3+ (high concentration) ions incorporated into the ZnO matrix, therefore Fe 2+ -Fe 3+ charge transfer mechanism 27 can also play a role in generating room temperature ferromagnetism.…”

“…A finite dipolar interaction between the spins causes the deviation of FC-ZFC curves at the temperature lower than T f . 26 Below T f the spins are frozen (in case of ZFC process) and as the temperature increases from the lowest value to T f , the thermal energy helps unfreeze the spins. This process permits the spins to align along the applied dc field and hence the magnetization increases with increasing temperature (below T f ).…”

“…In spin glasses, a common way to explore aging is the decay of thermoremnant magnetization (TRM) with time. Many groups have investigated magnetic properties of ZnFe 2 O 4 using various techniques 26,28,29 and provided interesting results. In this present study, to confirm the spin-glass behavior of ZnFe 2 O 4 , TRM depending on time was measured at 10 K for the sample X0 (as a representative one).…”

New process for the treatment of polluted water using the coupling of nanoparticles (Fe3O4) and intense magnetic system

“…The crystalline and high purity of magnetite with nanoparticles size were confirmed by the extent of peak broadening and the absence of unaccounted peaks. Using Debye-equation Scherrer's (2),The average crystal size of the magnetite nanoparticles was approximated [36].…”

Green catalyst of cobalt ferrite magnetic nanoparticles using petai peel extract for the synthesis of thiazolidinedione-based chalcone 4H-thiopyran as an antioxidant

“…5 Ferrite nanostructures are a type of magnetic material that have received signicant attention due to their exceptional electrical and magnetic properties. 6 Spinel-type ferrite nanomaterials have gained signicant importance due to their unique and useful properties in various elds. 7 The face-centered cubic structure formula for spinel ferrite is MFe 2 O 4 , where M represents divalent metal ions such as Zn, Ni, Mn, or Co. 8 Cobalt ferrite (CoFe 2 O 4 ) is particularly noteworthy among all spinel ferrites due to its exceptional physical properties.…”