Magnetic-fluorescent Fe3O4/CdS nanocomposites (NCs) with size of Fe3O4 varying between 5 and 12 nm have been synthesized by a two-step facile chemical route. XRD, TEM and Raman studies confirmed the phase purity and crystallinity of all the NCs. Photoluminescence peaks at 605 and 677 nm are assigned to sulfur and Cd vacancies respectively in CdS structure. Dc magnetization measurements indicate presence of superparamagnetic (SPM) relaxation in the NC having magnetite of size upto 7 nm whereas the NC containing magnetite of size 12 nm is ferrimagnetic. Ac susceptibility and 57Fe Mössbauer measurements corroborate SPM relaxation in the samples.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics