Abstract
A study was undertaken to prepare sub-micron particles of mixed oxides within the composition range CaO·Fe 2O 3 to 6CaO·2.2Al 2O 3·0.8Fe 2O 3 using both quenching and slow controlled cooling of a melt. Estimations of the particle sizes were obtained from the Blocking temperature using Mössbauer spectrometry and from the widths of X-ray diffraction lines. Sub-micron particles of 4CaO·Al 2O 3·Fe 2O 3 were shown to be superparamagnetic below 30 Å, which explains the anomalously high magnetic susceptibilities found in high-alumina cement and pulverised fuel ash.
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.
