Issue 7, 2024

Slow magnetization relaxation of a high-spin iron(iii) in mayenite Ca12Al14O33

Abstract

Samples of the Fe(III) doped calcium aluminate with an anti-zeolite type structure were prepared. The crystal structure parameters were determined, and dc and ac magnetic properties were studied. It is found that Fe(III) partially substitutes for Al(III) at a trigonally distorted tetrahedral site. This results in the occurrence of easy-axis magnetic anisotropy and field-induced slow relaxation of magnetization. This is the first example of a high-spin Fe(III) single ion magnet in all-inorganic solid, which, in addition, features higher magnetization relaxation times at elevated temperatures than any known Fe(III) coordination compound.

Graphical abstract: Slow magnetization relaxation of a high-spin iron(iii) in mayenite Ca12Al14O33

Supplementary files

Article information

Article type
Research Article
Submitted
24 Feb 2024
Accepted
04 Mar 2024
First published
05 Mar 2024

Inorg. Chem. Front., 2024,11, 2098-2104

Slow magnetization relaxation of a high-spin iron(III) in mayenite Ca12Al14O33

T. Z. Sharifullin, A. V. Vasiliev, V. D. Dolzhenko, S. Bette, R. E. Dinnebier, R. K. Kremer and P. E. Kazin, Inorg. Chem. Front., 2024, 11, 2098 DOI: 10.1039/D4QI00480A

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