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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:55 |
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Conference: Bucharest University Faculty of Physics 2015 Meeting
Section: Solid State Physics and Materials Science
Title:
The half metallic properties of the new full-Heusler compound Co2YSb
Authors:
Anca BIRSAN
Affiliation:
1) National Institute of Materials Physics, 105 bis Atomistilor Street, PO Box MG-7, 077125, Magurele-Ilfov, Romania,
2) University of Bucharest, Faculty of Physics, 105 Atomistilor Street, PO Box MG-11, 077125 Magurele-Ilfov, Romania
E-mail
anca_birsan@infim.ro
Keywords:
electronic structure, magnetic properties, Density Functional Theory, half-metallic materials, Heusler compounds
Abstract:
Advances in microelectronics and magnetic data storage devices, nowadays, depend on both novel approaches of device fabrication and novel materials. For efficient spintronic devices, it is desirable to have nearly complete spin-polarized carriers. Since half metallic materials [1] have electrons of only one spin at the Fermi energy, they are promising candidates for use as spin injectors. We have studied the electronic structure and magnetic properties of the new full-Heusler [2] compound Co2YSb by using first principles calculations within the Density Functional Theory framework. We show that the Co2YSb alloy exhibits the so-called Slater Pauling behaviour corresponding to 18 valence electrons per unit cell and is a potential half-metallic ferromagnet for a wide range of lattice constants.
References:
[1] de Groot RA, Mueller FM, van Engen G, Buschow KHJ. Phys Rev Lett 1983;50:2024
[2] Heusler Fr. Verh Deutsch Phys Ges 1903;5:219.
Acknowledgement:
Anca Birsan was supported by the strategic grant POSDRU/159/1.5/S/137750, ”Project Doctoral and Postdoctoral programs support for increased competitiveness in Exact Sciences research” cofinanced by the European Social Found within the Sectorial Operational Program Human Resources Development 2007 – 2013.
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