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Multinary metal alloys of the Heusler, half-Heusler, dilute magnetic semiconductors, and high entropy families: how would spin make a choice?

C. E. A. GRIGORESCU1,* , C.N. ZOITA1, A. SOBETKII2, A.-M. IORDACHE1, S.-M. IORDACHE1, C. R. STEFAN1, M. I. RUSU1, L. TORTET3, A. TONETTO4, R. NOTONIER3

Affiliation

  1. National Institute of R&D in Optoelectronics, INOE 2000, 409 Atomistilor, 077125, Magurele, Jud. Ilfov, Romania
  2. MGM STAR Construct SRL-Bucharest, Romania
  3. MADIREL,Aix Marseille Universite, Marseille, France
  4. PRATIM, Aix Marseille Universite, Marseille, France

Abstract

Multinary alloys from the half-Heusler, Heusler, dilute magnetic semiconductors and magnetic high entropy alloys have been investigated for their properties to accommodate quantum spin states and touch Curie temperatures above room temperature as utterly desired for spintronic devices. Co, Mn and Fe are the core elements in the alloys studied here. High structural ordering has been found in Co-based Heusler alloys, followed by equiatomic high entropy alloys with close atomic radii also cobalt based. Curie points between 400°C and 900°C were found in all materials..

Keywords

Spintronics, Half metals, Dilute magnetic semiconductors,Magnetic high entropy alloys, Heusler alloy.

Submitted at: Nov. 26, 2020
Accepted at: Dec. 7, 2020

Citation

C. E. A. GRIGORESCU, C.N. ZOITA, A. SOBETKII, A.-M. IORDACHE, S.-M. IORDACHE, C. R. STEFAN, M. I. RUSU, L. TORTET, A. TONETTO, R. NOTONIER, Multinary metal alloys of the Heusler, half-Heusler, dilute magnetic semiconductors, and high entropy families: how would spin make a choice?, Journal of Optoelectronics and Advanced Materials Vol. 22, Iss. 11-12, pp. 647-652 (2020)