A wide temperature window for the magnetostructural transformation in Mn50Ni50--Sn Co  alloys

Zhao, Dewei; Li, G.K.; Wang, S.Q.; Ma, Lei; Zhen, Congmian; Hou, Denglu; Liu, J.; Wang, W.H.; Liu, E.K.; Chen, J.L.; Wu, Guangheng

doi:10.1016/j.intermet.2015.12.005

Cited by 7 publications

(7 citation statements)

References 26 publications

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“…This can be correlated to the smaller size of Ni (atomic radius 1.35 Å) in comparison with Sn(atomic radius 1.45 Å). Better agreement with the experimental measurements [32,39] are obtained for the calculated lattice parameters in the FM configuration, as is clear from Fig. 1.…”

Section: Resultssupporting

confidence: 85%

“…A positive ∆E indicates the FM configurations have lower energy. Open symbols represent the experimental lattice constants [39]. The top x-axis represent the Sn content in Mn50Ni50−ySny.…”

Section: Resultsmentioning

confidence: 99%

“…Large changes in the magnetisation across the martensitic transformation for x = 0.6 hinted at the changes in magnetic order along with changes in the crystal structure leading to magneto-structural effects [32]. The particular alloy Mn 2 Ni 1.6 Sn 0.4 was subsequently investigated by many researchers [35][36][37][38][39]. In a nutshell, the results demonstrated that the composition, site ordering and the magnetic order are coupled with the stability of the martensitic phase in this system.…”

Section: Introductionmentioning

confidence: 99%

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Site occupancy, composition and magnetic structure dependencies of martensitic transformation in Mn₂Ni_{1 +x}Sn_1−x

Kundu

Ghosh

2017

J. Phys.: Condens. Matter

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A delicate balance between various factors such as site occupancy, composition and magnetic ordering seems to affect the stability of the martensitic phase in Mn2Ni1+xSn1−x. Using firstprinciples DFT calculations, we explore the impacts of each one of these factors on the martensitic stability of this system. Our results on total energies, magnetic moments and electronic structures upon changes in the composition, the magnetic configurations and the site occupancies show that the occupancies at the 4d sites in the Inverse Heusler crystal structure play the most crucial role. The presence of Mn at the 4d sites originally occupied by Sn and it's interaction with the Mn atoms at other sites decide the stability of the martensitic phases. This explains the discrepancy between the experiments and earlier DFT calculations regarding phase stability in Mn2NiSn. Our results qualitatively explain the trends observed experimentally with regard to martensitic phase stability and the magnetisations in Ni-excess, Sn-deficient Mn2NiSn system.

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Section: Resultssupporting

confidence: 85%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Site occupancy, composition and magnetic structure dependencies of martensitic transformation in Mn₂Ni_{1 +x}Sn_1−x

Kundu

Ghosh

2017

J. Phys.: Condens. Matter

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“…In addition, T C A also decreases as Fe content increases in the Ni 40 Co 10− x Fe x Mn 33 Al 17 alloys. In Ni‐Mn‐X alloys, there are two main types of hybridization: p‐d covalent hybridization and d‐d hybridization . Compared with Mn and Al elements, both Ni and Co elements possess more valence electrons and preferably occupy the (A, C) sites in the alloy .…”

Section: Resultsmentioning

confidence: 99%

“…Upon MT the Ni‐Mn‐Al alloys usually arises from paramagnetic (PM) or mixed FM/AFM state to the weak‐magnetic state, which leads to the small Δ M and hinders their practical applications . In the case of Ni‐Mn‐based Heusler alloys, partial substitution of Ni by Co strongly affects its MT and magnetic properties . Moreover, it was reported that adding some Co elements in Ni‐Mn‐Al system has a marked improvement on magnetic properties .…”

Section: Introductionmentioning

confidence: 99%

Large Magnetocaloric Effect and Magnetoresistance in Fe and Co Co‐Doped Ni‐Mn‐Al Heusler Alloys

Xuan

Agarwal

et al. 2018

Physica Status Solidi (a)

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The Ni 40 Co 10Àx Fe x Mn 33 Al 17 (x ¼ 4, 6, 8) alloys are prepared by arc-melting method. The crystallographic structure, magnetic and magnetoresistance properties are systematically studied. The large magnetic change is obtained across the martensitic transformation from the ferromagnetic austenite phase to weak-magnetic martensite phase. With the increase in Fe/Co ratio, the martensite transformation temperature shifts to the lower temperature. The large values of magnetoresistance of 33.3, 25.7, and 13.1% are achieved at the field of 3 T for x ¼ 4, x ¼ 6, and x ¼ 8 alloys around the martensitic transformation, respectively. These results indicate that Ni-Fe-Co-Mn-Al alloy provides the motive power for further research in practical applications.

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Effects of Sn vacancy and excess Sn doping on structural, magnetic and electrical properties of Ni 47 Mn 40 Sn 13 ferromagnetic shape memory alloy

et al. 2017

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A wide temperature window for the magnetostructural transformation in Mn50Ni50--Sn Co alloys

Cited by 7 publications

References 26 publications

Site occupancy, composition and magnetic structure dependencies of martensitic transformation in Mn₂Ni_{1 +x}Sn_1−x

Site occupancy, composition and magnetic structure dependencies of martensitic transformation in Mn₂Ni_{1 +x}Sn_1−x

Large Magnetocaloric Effect and Magnetoresistance in Fe and Co Co‐Doped Ni‐Mn‐Al Heusler Alloys

Effects of Sn vacancy and excess Sn doping on structural, magnetic and electrical properties of Ni 47 Mn 40 Sn 13 ferromagnetic shape memory alloy

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A wide temperature window for the magnetostructural transformation in Mn50Ni50--Sn Co alloys

Cited by 7 publications

References 26 publications

Site occupancy, composition and magnetic structure dependencies of martensitic transformation in Mn2Ni1 +xSn1−x

Site occupancy, composition and magnetic structure dependencies of martensitic transformation in Mn2Ni1 +xSn1−x

Large Magnetocaloric Effect and Magnetoresistance in Fe and Co Co‐Doped Ni‐Mn‐Al Heusler Alloys

Effects of Sn vacancy and excess Sn doping on structural, magnetic and electrical properties of Ni 47 Mn 40 Sn 13 ferromagnetic shape memory alloy

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Site occupancy, composition and magnetic structure dependencies of martensitic transformation in Mn₂Ni_{1 +x}Sn_1−x

Site occupancy, composition and magnetic structure dependencies of martensitic transformation in Mn₂Ni_{1 +x}Sn_1−x