L1$_0$ stacked binaries as candidates for hard magnets: FePt, MnAl and MnGa

TL;DR

This paper explores stacking binary magnets like FePt/MnGa and FePt/MnAl to enhance magnetocrystalline anisotropy for potential use as hard magnets, aiming to reduce reliance on costly platinum.

Contribution

It introduces a novel stacking strategy for binary magnets to improve anisotropy, focusing on cost-effective alternatives to platinum-based materials.

Findings

Stacked binary structures can enhance magnetocrystalline anisotropy.

FePt/MnGa and FePt/MnAl stacks show promising properties.

Alternative structures may reduce platinum usage while maintaining performance.

Abstract

A novel strategy of stacking binary magnets to enhance the magneto crystalline anisotropy is explored. This strategy is used in the search for hard magnets by studying FePt/MnGa and FePt/MnAl stacks. The choice of these binaries is motivated by the fact that they already possess large magneto crystalline anisotropy. Several possible alternative structures for these materials are explored in order to reduce the amount of Pt owing to its high cost.