Journalartikel

Jahr der Veröffentlichung: 2023

Zeitschrift: Physica B: Condensed Matter

Bandnummer: 666

ISSN: 0921-4526

eISSN: 1873-2135

Open Access Status: Hybrid

DOI Link: https://doi.org/10.1016/j.physb.2023.415090

Verlag: Elsevier

Abstract: 

A Ca12Al14O33 mayenite single crystal with 0.26(1) at.% of the metals substituted by Ni was synthesized. Single crystal XRD confirms that about 10 at.% of Al and Ca partially occupy split crystallographic sites with lowered point symmetry. Ni K-edge XAS reveals that Ni is present as Ni2+ and substitutes Al on tetrahedral oxygen coordinated sites. UV-VIS analysis further points to the partial occupation of the trigonally distorted Al(1) and Al (1B) sites by Ni2+. In accordance with the results from the analytical methods, the magnetic model consists of Ni2+ with spin S = 1 on a trigonally distorted tetrahedral coordination site. The J-mulitplet splitting due to spin orbit coupling with a non-magnetic J = 0 ground state determines the characteristic thermomagnetic properties which show a maximum of the effective paramagnetic moment of 3.61(1) & mu;B at about 191 K and an uniaxial anisotropy (crystal field parameter B20 = 69.5(2) cm  1).

Harvard-Zitierstil: Schwarz, B., Ebbinghaus, S., Eichhöfer, A., Simonelli, L., Krause, H., Bergfeldt, T., et al. (2023) Structure, site symmetry and spin-orbit coupled magnetism of a Ca12Al14O33 mayenite single crystal substituted with 0.26 at.% Ni, Physica B: Condensed Matter, 666, Article 415090. https://doi.org/10.1016/j.physb.2023.415090

APA-Zitierstil: Schwarz, B., Ebbinghaus, S., Eichhöfer, A., Simonelli, L., Krause, H., Bergfeldt, T., Indris, S., Janek, J., & Ehrenberg, H. (2023). Structure, site symmetry and spin-orbit coupled magnetism of a Ca12Al14O33 mayenite single crystal substituted with 0.26 at.% Ni. Physica B: Condensed Matter. 666, Article 415090. https://doi.org/10.1016/j.physb.2023.415090