Appearance of half-metallicity in the quaternary Heusler alloys

By I. Galanakis. 2003

156 citations recorded by the source corpus.

I report systematic first-principles calculations of the quaternary Heusler alloys, e.g. Co2[Cr1−xMnx]Al, Co2Mn[Al1−xSnx] and [Fe1−xCox]2MnAl. I show that these alloys are also half-ferromagnets when the normal Heusler compounds corresponding to concentration values of zero and unity are half-metals. Moreover, the total spin moment Mt in μB scales linearly with the total number of valence electrons Zt (and thus with the concentration x) following the relation Mt = Zt−24, independently of the origin of the extra valence electrons, confirming the Slater–Pauling behaviour of the normal Heusler alloys. These results pave the way for experimentalists searching for new half-metallic alloys.

Subfields: Electronic, Optical and Magnetic Materials, Materials Chemistry, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/ed7b46f4e8d59fbe72e1caf88026dcfd8af10fec

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Electronic, Optical and Magnetic Materials

In Materials Chemistry

In Mechanical Engineering

Citations in the corpus

Half-metallic ferromagnets: From band structure to many-body effects (2007, methodology): “The first-principle calculations of the quaternary Heusler alloys Co2[Cr1−xMnx]Al, Co2Mn[Al1−xSnx] and [Fe1−xCox]2MnAl (Galanakis, 2004) demonstrated the Slater-Pauling behavior and half-metallic properties.”