Microwave-assisted hydrothermal synthesis and magnetic properties of nanostructured cobalt ferrite

Observation of intrinsic fluorescence in cobalt ferrite magnetic nanoparticles by Mn2+ substitution and tuning the spin dynamics by cation distribution

“…Also, the variation in the structural parameters was not systematic, which can be correlated with the difference in ionic radii of the metal ions such as Co 2+ (0.74 Å), Mn 2+ (0.80 Å), and Fe 3+ (0.64 Å). 36,44 This indicates that the optimized concentration of substitution holds the key to improving and governing the properties of these NFs.…”

“…However, the effect of Mn 2+ substitution on the properties of Co-Mn mixed ferrites has rarely been investigated in detail. [33][34][35][36][37][38][39] Also, none of the reports in the literature investigated the optical properties of Co-Mn mixed ferrites given that NFs are generally optically inactive materials. [40][41][42] Consequently, imparting optical activity, which can be tuned by an external magnetic field, provides a unique opportunity to develop active control devices.…”

Advances in the Synthesis and Application of Magnetic Ferrite Nanoparticles for Cancer Therapy

“…The microwave synthesis technique is a relatively new method of synthesising ferrite NPs other than synthesis techniques [ 128 ]. The microwave-assisted chemical reaction has received wide attention in recent years [ 162 , 163 , 164 , 165 ]. This method has many advantages, such as faster heating, higher reaction rate, a higher degree of crystallisation, higher product yield, and smaller particle sizes with a narrower distribution [ 166 ].…”

Síntese e Caracterização de Nanopartículas de CoFe 2O4@SiO2:phen:Eu+3 com Propriedades Magnéticas e Luminescentes

“…6,8 As ferritas são de fácil obtenção por diferentes métodos de síntese, como a coprecipitação, o método sol-gel, síntese hidrotémica e o processamento solvotérmico. 9,10 As ferritas de cobalto (CoFe 2 O 4 ) se sobressaem por possuírem alta coercitividade e estabilidade química. 11 Nanoestruturas de ferritas de cobalto atraem interesse na área de saúde pela aplicação como agentes de contraste em ressonância magnética, carreadores de fármacos guiados por campos magnéticos, separação biomolecular magnética e para diagnósticos 1 .…”

“…O recobrimento com sílica também contribui para o aumento da estabilidade contra degradação/ oxidação, da biocompatibilidade e da hidrofilicidade. 9 A luminescência é a propriedade que alguns materiais possuem de absorver energia e então reemitir luz visível. Os fótons de luz emitida são gerados a partir de transições eletrônicas 3 .…”