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Half Heusler (HH) thermoelectric alloys provide a wide platform to choose materials with non-toxic and earth abundant elements. This article presents an ab-initio theoretical evaluation of electrical and thermal transport properties of…

Materials Science · Physics 2016-10-21 Vikram , Jiban Kangsabanik , Enamullah , Aftab Alam

We expand our study on the full-Heusler compounds [I. Galanakis \textit{et al.}, Appl. Phys. Lett. \textbf{89}, 042502 (2006)] to cover also the case of doping and disorder in the case of Co$_2$MnAl and Co$_2$MnGa half-metallic Heusler…

Materials Science · Physics 2013-05-29 K. Ozdogan , B. Aktas , E. Sasioglu , I. Galanakis

Context Mixed-metal clusters have long been studied because of their peculiar properties and how they change with cluster size, composition and charge state and their potential roles in catalysis. The characterization of these clusters is…

Chemical Physics · Physics 2024-04-30 Paulo H. Acioli

The half metallic and magnetic properties of Zr2RhZ (Z = Al, Ga, In) alloys with an Hg2CuTi-type structure were systematically investigated using the first-principle calculations. Zr2RhZ (Z = Al, Ga, In) alloys are predicted to be…

Materials Science · Physics 2015-05-04 X. T. Wang , J. W. Lu , H. Rozale , X. F. Liu , Y. T. Gui , G. D. Liu

Half-Heuslers are a promising family for thermoelectric (TE) applications, yet only a small fraction of their potential chemistries has been experimentally explored. In this work, we introduce a distinct computational high-throughput…

Materials Science · Physics 2025-01-22 Angela Pak , Kamil Ciesielski , Maria Wróblewska , Eric S. Toberer , Elif Ertekin

In this article, we investigated the effect of Cr substitution in place of Fe on the structural, magnetic and transport properties of $\mathrm{Co_2FeSi}$ alloy. A comprehensive structural analysis is done using X-ray diffraction (XRD) and…

Materials Science · Physics 2018-11-14 Deepika Rani , Jiban Kangsabanik , K. G. Suresh , N. Patra , D. Bhattacharyya , S. N. Jha , Aftab Alam

The electronic and magnetic bulk properties of half-metallic Heusler alloys such as Co$_{2}$FeSi, Co$_{2}$FeAl, Co$_{2}$MnSi and Co$_{2}$MnAl are investigated by means of {\em ab initio} calculations in combination with Monte Carlo…

Materials Science · Physics 2013-11-11 Denis Comtesse , Benjamin Geisler , Peter Entel , Peter Kratzer , László Szunyogh

In this work, we study the equiatomic quaternary Heusler Alloy CoFeCrP using two methods: DFT and Monte Carlo simulations. The DFT method allowed us to illustrate the structural, electronic and magnetic properties of this alloy. The ground…

Materials Science · Physics 2021-08-12 S. Idrissi , S. Ziti , H. Labrim , L. Bahmad , A. Benyoussef

We present a rational approach to the design of half-metallic heterostructures which allows the design of an infinite number of half-metallic heterostructures. The wide range of materials that can be made half-metallic using our approach…

Materials Science · Physics 2011-03-22 William H. Butler , Claudia K. A. Mewes , Chunsheng Liu , Tianyi Xu

Rational material design by elemental substitution is useful in tailoring materials to have desirable properties. Here we consider three non-equivalent substitutional series based on Co$_2$FeGe, viz; (Co$_{2-\alpha}$Mn$_\alpha$)FeGe,…

Materials Science · Physics 2025-09-26 R. Mahat , S. Budhathoki , S. Regmi , J. Y. Law , V. Franco , W. H. Butler , A. Gupta , A. Hauser , P. LeClair

The possibility of half-metallic antiferromagnetism, a special case of ferrimagnetism with a compensated magnetization, in the diluted magnetic semiconductors is highlighted on the basis of the first principles electronic structure…

Materials Science · Physics 2009-11-11 H. Akai , M. Ogura

In this work, polycrystalline NiCrGa half Heusler alloy, which is predicted to be half-metallic ferromagnet from first principles calculations, has been synthesized by arc meting technique and its structural, magnetic as well as the…

Materials Science · Physics 2018-12-26 Madhusmita Baral , M. K. Chattopadhyay , Aparna Chakrabarti , Tapas Ganguli

We present extensive first-principles calculations on the inverse full-Heusler compounds having the chemical formula X$_2$YZ where (X = Sc, Ti, V, Cr or Mn), (Z = Al, Si or As) and the Y ranges from Ti to Zn. Several of these alloys are…

Materials Science · Physics 2013-02-20 S. Skaftouros , K. Ozdogan , E. Sasioglu , I. Galanakis

We study the electronic and magnetic properties of the quaternary AuMnSn$_{1-x}$Sb$_{x}$ Heusler alloys using first principles calculations. We determine their magnetic phase diagram and we show that they present a phase transition from a…

Materials Science · Physics 2015-05-13 K. Ozdogan , I. Galanakis , E. Sasioglu

We propose a general rule for estimating the magnetic moments of Co$ 2$(cobalt)-based Heusler alloys, especially when doped with late transition metals. We come up with a descriptor that can characterise both pure Co$_2$YZ compounds and the…

Materials Science · Physics 2022-09-28 Satadeep Bhattacharjee , Seung-Cheol Lee

Applying the approximate DFT-1/2 quasiparticle scheme, band structure unfolding, and generalized quasichemical approximation to describe chemical and structural disorder, we investigate the electronic structure of Bi$_{1-x}$Sb$_x$ alloys…

Materials Science · Physics 2017-11-27 F. L. Freitas

Results of Co and Ni substituted AlN in the zinc blende phase are presented. For spin up states the hybridized N-2p and Co/Ni-3d states form the valance bands with a bandgap around the Fermi level for both materials, while in the case of…

Materials Science · Physics 2011-01-24 Suneela Arif , Iftikhar Ahmad , B. Amin

Since their discovery around a century ago, the structure and chemistry of the multi-functional half-Heusler semiconductors have been studied extensively as three component systems. The elemental groups constituting these ternary compounds…

Materials Science · Physics 2019-01-29 Shashwat Anand , Max Wood , Chris Wolverton , G. Jeffrey Snyder

Within the framework of density functional theory, the electronic structure and magnetic properties have been studied for the Ti\raisebox{-.2ex}{\scriptsize 2}FeSn full-Heusler compound. The ferromagnetic state is found to be energetically…

Materials Science · Physics 2013-09-26 A. Birsan , P. Palade

Electronic structure calculations indicate that the Sr2FeSbO6 double perovskite has a flat-band set just above the Fermi level that includes contributions from ordinary sub-bands with weak kinetic electron hopping plus a flat sub-band that…