guest ::
| Home > Publications database > Tuning magnetostructural and magnetocaloric properties of MnNiGe alloys through strategic use of self- and dual doping approaches |
| Home > Publications database > Tuning magnetostructural and magnetocaloric properties of MnNiGe alloys through strategic use of self- and dual doping approaches |
| Journal Article | PUBDB-2025-03919 |
; ; ; ; ; ; ; ; ; ; ; ;
2025
Inst.
Woodbury, NY
This record in other databases: 
Please use a persistent id in citations: doi:10.1103/5w9y-ljdd doi:10.3204/PUBDB-2025-03919
Abstract: The present work aims to address the effect of self-doping and a combined perturbation of self- and vacancy doping on the structural, magnetic, and magnetofunctional properties of MnNiGe-based magnetic equiatomic alloys of nominal compositions Mn$_{1−𝑥}$Ni$_{1+𝑥}$Ge (for 𝑥 = 0.2 and 0.15), Mn$_{1+𝑦}$Ni$_{1−𝑦}$Ge (for 𝑦 = 0.2 and 0.22), and Mn$_{1+𝑧}$Ni$_{0.9−𝑧}$Ge (𝑧 = 0.03 and 0.06). Experimental findings reveal that all six alloys undergo martensitic type first-order phase transition and the transition is found to be shifted towards lower temperature with increasing doping concentration. Structural investigation reveals the incomplete nature of the martensitic phase transitions. A substantial magnetic entropy change near the martensitic phase transition temperature suggests the materials applicability as magnetic refrigerant. Interestingly, perturbation at the magnetically ordered transition metal site (Mn site) through self-doping shows larger impact on the structural and magnetic properties compared to the perturbation at the nonmagnetic transition metal site (Ni site). The introduction of vacancy at the Ni-site results in a larger impact on the incompleteness in the martensitic phase transition present in dual-doped alloys. Field-induced metamagnetic transition, nonmonotonicity in the inverse magnetocaloric effect behavior, and the presence of a possible spin-reorientation transition have also been noticed in the alloys with coexisting self- and vacancy doping.
; 
; 
; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection
|
The record appears in these collections: |
PDF
PDF (PDFA)