Compensated Ferrimagnetic Tetragonal Heusler Thin Films for Antiferromagnetic Spintronics.

Sahoo, Roshnee; Wollmann, Lukas; Selle, Susanne; Höche, Thomas; Ernst, Benedikt; Kalache, Adel; Shekhar, Chandra; Kumar, Nitesh et al. · Adv Mater · 2016

basic_science · Level V

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Abstract

Fully compensated ferrimagnets with tetragonal crystal structure have the potential for large spin-polarization and strong out-of-plane magnetic anisotropy; hence, they are ideal candidates for high-density-memory applications. Tetragonal Heusler thin films with compensated magnetic state are realized by substitution of Pt in Mn<sub>3-x</sub> Pt<sub>x</sub> Ga. Furthermore, the bilayer formed from compensated/uncompensated Mn-Pt-Ga layers is utilized to accomplish exchange bias up to room temperature.