Physical studies of spintronics-based Heusler alloys

Abstract

This is to review the structural, elastic, optoelectronic, mechanical, thermodynamic, and magnetic properties of different half- and full-Heusler compounds such as NiTiX and CoVX (X = Sb and Sn); CoCrZ (Z = Al, Ga); Co2YZ (Z = P, As, Sb and Bi); Mn2RuGe1-xSnx, Ag2GdSi, Ag2GdSn and Ag2GdPb; CaYP (Y = Cu, Ag); Co2YAl (Y = Fe, Ti); Ag2YB (Y = Nd, Sm, Gd); Ni2Mn(Ge,Sn); Mn2NiGe; CaMgZ (Z = C, Si, Ge, Sn, Pb); NiTiX and CoVX (X = Sb and Sn); Rh2MnZ (Z = Zr, Hf); X2LuSb (X = Mn and Ir); Ag2CeAl, Cd2LaB, Cd2PrB, Cd2CeB, Co2TaGa, Ni2LaZ (Z = As, Sb and Bi); FeVX (X = As, P); Co2FexMn1−xSi (x = 0,0.5, and 1.0); Co2CrGa1−xSix; Co2YZ (Z = P, As, Sb and Bi) and Ru2MnNb by using first-principles calculations based on density functional theory (DFT) within full potential linear muffin-tin orbital (FP-LMTO) and full-potential linearized augmented plane wave (FP-LAPW) methods. The local density and generalized gradient approximations (LDA and GGA) are utilized for researching the exchange and correlation effect. The mBJ-GGA has been employed for better bandgap for Heusler compounds. These Heusler compounds have stabled cubic structure type I (simple cubic) and lattice constants are agreed with available results. They are stabled mechanically, the elastic values obey the brittle behavior of stability criteria with a nature of ionic and isotropic of structure type I (simple cubic), cube. They have direct bandgap, referring to semiconducting behavior of Heusler compounds. The optical studies of half-Heusler compounds point to maximum absorption and reflectivity in ultra violet range. The thermodynamic properties of full- and half-Heusler alloys are researched in detail. In addition, the magnetic properties of ternary and quaternary Heusler alloys are elaborated to meet the fruitful requirements. The Heusler alloys have been studied with exceptional versatility for various commercial applications. Finally, the challenges for synthesizing Heusler alloys-based devices and future perspectives on Heusler alloys are detailed for the best of the community of science and technology.