The p-type (Mn1.5Co0.5)VAl Heusler alloy with high Curie temperature for spintronics device applications

被引:0
作者
Chellakumar, R. [1 ]
Malar, T. Stella Deiva [1 ]
Sundaramoorthy, S. [2 ]
Saji, S. K. [3 ]
Ravichandran, K. [1 ]
机构
[1] Univ Madras, Dept Nucl Phys, Guindy Campus, Chennai 600025, India
[2] Anna Univ, Dept Phys, CEG Campus, Chennai 600025, India
[3] Univ Coll, Dept Phys, Thiruvananthapuram 695034, Kerala, India
关键词
Heusler alloy; Semiconductor; Soft magnetic; High curie temperature; Spintronics; MAGNETIC-PROPERTIES; SPIN POLARIZATION; CO SUBSTITUTION; MN; AL;
D O I
10.1016/j.vacuum.2024.113444
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The solid-state method was employed to synthesize (Mn1 & sdot;5Co0.5)VAl Heusler alloy particles it exhibits soft magnetic property with semiconducting nature. The X-ray diffraction technique was used to study the structural investigation, it revealed a pure L21 phase with a lattice parameter of a = 5.83 & Aring;. It was thermally stable up to 900 degrees C, confirmed through thermogravimetric and differential thermal analysis with no observed weight loss, underscoring the alloys impressive thermal resilience. A positive carrier concentration was detected through the Hall measurements, its affirming the p-type semiconducting nature of the alloy. The magnetic property analysis revealed its soft magnetic nature with low coercivity. Remarkably, the Curie temperature was found at 799 K, surpassing both experimental and theoretical predictions. The magnetic characteristics of multicomponent alloys are significantly influenced by the degree of atomic order on the various crystallographic sites. Since, this type of material consuming little energy, it may be utilize magnetic switching for spintronic devices applications due to its high Curie temperature and low coercivity.
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页数:11
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