Abstract
The structural and magnetic behaviour of BaFe12O19 subjected to milling in vacuum for 1000 h has been investigated by x-ray powder diffraction and Mossbauer effect spectroscopy techniques. Pronounced structural disorder is obtained along with partial decomposition of BaFe12O19 to α-Fe2O3 and evidence for superparamagnetic relaxation effects due to the fine particles produced on milling. Restoration of the fully crystallised BaFe12O19 structure on annealing at 1000 °C is accompanied by a six fold enhancement in the magnetic coercivity. This behaviour is linked with the fine crystallites.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
