Peculiarities of electronic transport and magnetic state in half-metallic ferromagnetic and spin gapless semiconducting Heusler alloys

Abstract

A brief survey of experimental and theoretical studies of half-metallic ferromagnets (HMFs) and spin gapless semiconductors is given, the possible candidates being the X${}_2$YZ (X = Mn, Fe, Co; Y = Ti, V, Cr, Mn, Fe, Co, Ni; Z = Al, Si, Ga, Ge, In, Sn, Sb) Heusler alloys. The data on the electrical resistivity, normal and anomalous Hall Effect, and magnetic properties are presented. It is shown that the Co${}_2$FeZ alloys demonstrate properties of conventional ferromagnets, the HMF properties being also manifested at the variation of the Z-component. The Fe${}_2$YAl and Mn${}_2$YAl alloys show at the variation of the Y-component both metallic and semiconducting electronic characteristics, the magnetic properties, changing from the ferromagnetic to compensated ferrimagnetic state. The HMF and spin gapless semiconductor states are supposed to exist in these Heusler alloys systems.

Proceedings of EASTMAG-2019, Ekaterinburg, 8 pages, pdf

References in corpus (5)

• Half-Metallic Ferromagnetism in the Heusler Compound Co${}_2$FeSi revealed by Resistivity, Magnetoresistance, and Anomalous Hall Effect measurements
• Guidelines for understanding cubic manganese-rich Heusler compounds
• Spin transport in half-metallic ferromagnets
• Half-Metallic Ferromagnets and Spin Gapless Semiconductors
• Observation of Intrinsic Half-metallic Behavior of CrO${}_2$ (100) Epitaxial Films by Bulk-sensitive Spin-resolved PES

Cited by in corpus (2)

• Half-metallic Ferromagnets, Spin Gapless Semiconductors, and Topological Semimetals Based on Heusler Alloys
• Unusual kinetic properties of usual Heusler alloys