Abstract
Extended x-ray absorption fine structure measurements of the Fe K, and Pr and Er LIII absorption edges, were carried out to elucidate the relationship between the local structure and magnetism in Al substituted, partially nitrogenated (Er0.5Pr0.5)2Fe17 permanent magnets. We find that the nitrogenation acts to dilate both the Fe–Fe and the (Pr,Er)–Fe bonds, thus raising the TC via a magnetovolume effect. However, nitrogenation of Al-substituted samples acts to decrease the average Fe–Fe bond distance, thus reducing the exchange on the Fe sublattice and lowering TC relative to the nitrogenated parent compound. This is opposite to the trend measured in systems when N is absent.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.