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Appl. Sci. 2018, 8(9), 1581;

Strain Control of the Tunable Physical Nature of a Newly Designed Quaternary Spintronic Heusler Compound ScFeRhP

Department of Physics, College of Science, North China University of Science and Technology, Tangshan 063210, China
Condensed Matter and Sustainable Development Laboratory, MDD Department, Faculty of Science, University of Sidi-Bel-Abbes, Sidi-Bel-Abbes 22000, Algeria
Author to whom correspondence should be addressed.
Received: 19 August 2018 / Revised: 2 September 2018 / Accepted: 4 September 2018 / Published: 7 September 2018
(This article belongs to the Special Issue Recent Advances in Novel Materials for Future Spintronics)
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Recently, an increasing number of rare-earth-based equiatomic quaternary compounds have been reported as promising novel spintronic materials. The rare-earth-based equiatomic quaternary compounds can be magnetic semiconductors (MSs), spin-gapless semiconductors (SGSs), and half-metals (HMs). Using first-principle calculations, we investigated the crystal structure, density of states, band structure, and magnetic properties of a new rare-earth-based equiatomic quaternary Heusler (EQH) compound, ScFeRhP. The results demonstrated that ScFeRhP is a HM at its equilibrium lattice constant, with a total magnetic moment per unit cell of 1 μB. Furthermore, upon introduction of a uniform strain, the physical state of this compound changes with the following transitions: non-magnetic-semiconductor-(NMS) → MS → SGS → HM → metal. We believe that these results will inspire further studies on other rare-earth-based EQH compounds for spintronic applications. View Full-Text
Keywords: quaternary Heusler compound; first-principle calculations; physical nature quaternary Heusler compound; first-principle calculations; physical nature

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Chen, Z.; Rozale, H.; Gao, Y.; Xu, H. Strain Control of the Tunable Physical Nature of a Newly Designed Quaternary Spintronic Heusler Compound ScFeRhP. Appl. Sci. 2018, 8, 1581.

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