cobalt ferrite – TechConnect Briefs

Co0.5Fe2.5O4 nanoparticle biological impact – comparative study on environmental cellulolytic fungi

Oprica L., Andries M., Nadejde C., Creanga D., Alexandru Ioan Cuza University, RO

Cobalt ferrite magnetic nanoparticles (MNPs) were prepared by co-precipitation being further electrostatically stabilized in solution (particularly used in experimental cancer treatment through hyperthermia). We focused on the biological impact of MNPs following their release in [...]

Thermal Analysis of Polyimide-Cobalt Ferrite Nanocomposites

Mazuera D., Perales-Perez O., Singh S.P., Suarez O.M., University of Puerto Rico-Mayagüez, PR

Thermal stability and thermomechanical behavior of new polymer-based nanocomposite was investigated to assess the viability of the fabrication process. The nanocomposite film consisted of a polyimide (PI) matrix and nanodispersoids of a recently developed high-coercivity [...]

Effect of Rare Earth Doping on Magnetic Properties of Cobalt Ferrite Nanocrystals

Cedeño-Mattei Y., Uwakweh O.N.C., Osorio-Cantillo C., University of Puerto Rico-Mayagüez, PR

Cobalt ferrite (CoFe2O4) is a highly anisotropic magnetic material due to the magnetocrystalline anisotropy contribution from Co2+. The addition of foreign cations of different oxidation states, substituting Co2+ or Fe3+, can lead to an atomic [...]

Optimization of Magnetic Properties in Cobalt Ferrite Nanocrystals

Cedeño Y., Perales-Perez O., Roman F., Singhal R., Tomar M.S., University of Puerto Rico, Mayaguez Campus, PR

Among the various ferrite materials for magnetic recording applications, cobalt ferrite (CoFe2O4) possesses excellent chemical stability and good mechanical hardness. Furthermore, the large positive first order crystalline anisotropy constant has made this ferrite a promising [...]

In vitro & in vivo toxicity of CoFe2O4 nanoparticles for application to magnetic hyperthermia

Kim D-H., Kim K-M, Kim K.N., Kim D-H., Kim K-M, Kim K.N., Kim D-H., Kim K-M, Kim K.N., Shim I-B, Lee Y.K., The University of Alabama, Tuscaloosa, US

Magnetic nanoparticles offer some attractive possibilities in biomedicine because it has the special physical properties. So, we can usually consider four particular applications: magnetic separation, drug delivery, hyperthermia treatments and magnetic resonance imaging (MRI) contrast [...]

Structural and Magnetic Properties study of CoFe2O4 Nanopowder prepared by Mechanical Milling using metallic Cobalt and Hematite powder Blend

Beitollahi A., Sani R., Maksimov Yu.V., Suzdalev I.P., Iran University of Science and Technology (IUST), IR

In this work we report the phase formation and magnetic properties of CoFe2O4 nanopowder prepared by mechanical alloying technique using metallic cobalt and hematite powder (1:1 molar ratio) as the initial raw material in ambient [...]

Size-control and Size-selection at the Nanosize Level: Production of CoFe2O4 nanoparticles of unusual high coercivity at room temperature

Chinnasamy C.N., Jeyadevan B., Perales-Perez O., Shinoda K., Tohji K., Kasuya A., University of Puerto Rico, PR

Here, we introduce a solution chemistry technique which involves a `seeding step` under conditions where nucleation and growth rates of particles are controlled to produce single domain well-crystallized CoFe2O4 nanoparticles followed by a size-selective separation [...]