Comparison of structure and magnetic properties of the 4f and 5f electron ThMn12-type ternary aluminides

Add time:08/01/2019    Source:sciencedirect.com

The structure and magnetic properties of the MeMnxAl12−x and MeFexAl12−x systems, where Me = rare earth or actinide, are presented. It is established that the magnetic order for the Mn compounds results from the antiferromagnetically coupled f-electron sublattice whereas in the Fe alloys both sublattices provide a contribution to magnetic order. In this case the complicated mutual relationships of various types of interaction can be a reason for the spin-glass state. For the actinide compounds strong hybridization might suppress magnetic order in the Mn compounds. The single magnetic transition for the aluminides with Fe is probably caused by the strong actinide-Fe interactions.

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