Abstract
We present here a study of the magnetic properties of the ${\mathrm{Nd}}_{2\ensuremath{-}x}{\mathrm{Ho}}_{x}{\mathrm{Fe}}_{14}\mathrm{B}$ series. The macroscopic properties of these compounds evolve continuously from those of ${\mathrm{Nd}}_{2}{\mathrm{Fe}}_{14}\mathrm{B}$ to those of ${\mathrm{Ho}}_{2}{\mathrm{Fe}}_{14}\mathrm{B}$ as Ho gradually replaces Nd. The system shows a compensation of the rare-earth sublattice magnetization for a critical concentration, ${x}_{c}=0.55$, that is reflected into the anomalous behavior of both macroscopic and microscopic magnetic probes. The combined analysis of magnetization, $^{57}\mathrm{Fe}$ M\"ossbauer spectroscopy and Fe $K$-edge x-ray magnetic circular dichroism (XMCD) measurements suggests that the origin of the anomalous magnetic behavior found at ${x}_{c}=0.55$ is mainly due to the Ho sublattice. Moreover, the analysis of the Fe $K$-edge XMCD signals reveal the presence of a rare-earth contribution, reflecting the coupling of the rare-earth and Fe magnetic moments, which can lead to the possibility of disentangling the magnetic behavior of both Fe and R atoms using a single absorption edge.
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.
