title: Room temperature ferromagnetism in Ce(1-x)Fe(x)O(2-delta) (x = 0.0, 0.05, 0.10, 0.15 and 0.20) nanoparticles synthesised by combustion method.
abstract: Nanocrystalline Ce(1-x)Fe(x)O(2-delta) particles with different Fe concentrations (x = 0.0, 0.05, 0.10, 0.15, and 0.20) have been prepared by a gel-combustion method. X-ray diffraction data revealed the formation of an impurity free Ce(1-x)Fe(x)O(2-delta) products up to x = 0.15. This observation is further confirmed from the detailed studies conducted on 10 at.% Fe doped CeO2 using High-Resolution Transmission Electron Microscopy (HRTEM) imaging, Selected-Area Electron Diffraction (SAED) and Raman spectroscopy. DC magnetization studies as a function of field and temperature indicate that they are ferromagnetic with Curie temperature (Tc) well above room temperature.
authors.affiliation: Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
authors.forename: Onattu Damodharan
authors.initials: OD
authors.lastname: Jayakumar
authors.forename: Ajayan
authors.initials: A
authors.lastname: Vinu
authors.forename: K Veerendra
authors.initials: KV
authors.lastname: Guduru
authors.forename: Tyagaraja
authors.initials: T
authors.lastname: Sakuntala
authors.forename: Avesh Kumar
authors.initials: AK
authors.lastname: Tyagi