Determination of the magnetocaloric effect associated with martensitic transition in Ni 46 Cu 4 Mn 38 Sn 12 and Ni 50 CoMn 34 In 15 Heusler alloys

2011 ◽  
Vol 20 (4) ◽  
pp. 047502 ◽  
Author(s):  
Zhe Li ◽  
Chao Jing ◽  
Hao-Lei Zhang ◽  
Shi-Xun Cao ◽  
Jin-Cang Zhang
Keyword(s):  
Magnetocaloric Effect ◽  
Heusler Alloys ◽  
Martensitic Transition

Hydrostatic pressure effects on martensitic transition, magnetic and magnetocaloric effect in Si doped Ni–Mn–Sn Heusler alloys

2014 ◽  
Vol 584 ◽  
pp. 175-179 ◽  
Author(s):  
S. Esakki Muthu ◽  
M. Kanagaraj ◽  
Sanjay Singh ◽  
P.U. Sastry ◽  
G. Ravikumar ◽  
...  
Keyword(s):  
Hydrostatic Pressure ◽  
Magnetocaloric Effect ◽  
Heusler Alloys ◽  
Pressure Effects ◽  
Martensitic Transition ◽  
Si Doped

Magnetocaloric and Shape-Memory Properties in Magnetic Heusler Alloys

2008 ◽  
Vol 52 ◽  
pp. 221-228 ◽  
Author(s):  
Antoni Planes ◽  
Lluís Mañosa ◽  
Xavier Moya ◽  
Jordi Marcos ◽  
Mehmet Acet ◽  
...  
Keyword(s):  
Shape Memory ◽  
Magnetocaloric Effect ◽  
Heusler Alloys ◽  
Length Scale ◽  
Martensitic Transition ◽  
Magnetic Domains ◽  
Magnetic Shape Memory ◽  
Uniaxial Magnetic Anisotropy ◽  
Shape Memory Properties ◽  
Applied Fields

In this paper, we discuss the magnetocaloric behavior of Ni-Mn-based Heusler alloys in rela- tion to their shape-memory and superelastic properties. We show that the magnetocaloric effect in these materials originates from two different contributions: (i) the coupling that is related to a strong uniaxial magnetic anisotropy and takes place at the length scale of martensite variants and magnetic domains (extrinsic effect), and (ii) the intrinsic microscopic magnetostructural coupling. The first contribution is intimately related to the magnetically induced rearrange- ment of martensite variants (magnetic shape-memory) and controls the magnetocaloric effect at small applied fields, while the latter is dominant at higher fields and is essentially related to the possibility of magnetically inducing the martensitic transition (magnetic superelasticity). The possibility of inverse magnetocaloric effect associated with these two contributions is also considered.

scholarly journals Measurement independent magnetocaloric effect in Mn-rich Mn-Fe-Ni-Sn(Sb/In) Heusler alloys

2019 ◽  
Vol 476 ◽  
pp. 92-99 ◽  
Author(s):  
Arup Ghosh ◽  
Rajeev Rawat ◽  
Arpan Bhattacharyya ◽  
Guruprasad Mandal ◽  
A.K. Nigam ◽  
...  
Keyword(s):  
Magnetocaloric Effect ◽  
Heusler Alloys

scholarly journals Inverse magnetocaloric effect in ferromagnetic Ni50Mn37+xSb13−x Heusler alloys

2007 ◽  
Vol 101 (5) ◽  
pp. 053919 ◽  
Author(s):  
Mahmud Khan ◽  
Naushad Ali ◽  
Shane Stadler
Keyword(s):  
Magnetocaloric Effect ◽  
Heusler Alloys

scholarly journals Fundamental aspects of symmetry and order parameter coupling for martensitic transition sequences in Heusler alloys. Erratum

2020 ◽  
Vol 76 (6) ◽  
pp. 1143-1144
Author(s):  
Michael A. Carpenter ◽  
Christopher J. Howard
Keyword(s):  
Phase Transitions ◽  
Order Parameter ◽  
Heusler Alloys ◽  
Martensitic Transition ◽  
Acta Cryst ◽  
Parameter Coupling

In the course of further studies of phase transitions in martensites [Driver, Salje, Howard, Lampronti, Ding & Carpenter (2020), Phys. Rev. B, 102, 014105], errors were uncovered in a few entries in Table 3 of the paper by Carpenter & Howard [(2018), Acta Cryst. B74, 560–573]. The required corrections are given here.

Magnetocaloric Effect in Ni-Mn-Ga and Ni-Co-Mn-In Heusler Alloys

2009 ◽  
Vol 1200 ◽  
Author(s):  
Vasiliy Buchelnikov ◽  
Sergey Taskaev ◽  
Mikhail Drobosyuk ◽  
Vladimir Sokolovskiy ◽  
Viktor Koledov ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetocaloric Effect ◽  
Curie Point ◽  
Direct Method ◽  
Heusler Alloys ◽  
Field Change ◽  
Adiabatic Temperature Change ◽  
Magnetic Field Change ◽  
A Direct Method ◽  
The Magnetic Field

AbstractThe positive magnetocaloric effect (MCE) in the vicinity of the Curie point in Ni2+xMn1-xGa (x=0.33, 0.36, 0.39) Heusler alloys and the negative and positive MCE near the metamagnetostructural (MMS) transition and the Curie point, respectively, in Ni45Co5Mn36.5In13.5 Heusler alloy has been measured by a direct method. For the magnetic field change ΔH = 2 T, the maximal adiabatic temperature change ΔTad at the Curie point in Ni2+xMn1-xGa alloys is larger than 0.6 K. For Ni45Co5Mn36.5In13.5 alloy, the maximal value of ΔTad = 1.68 K (for the same magnetic field change, ΔH = 2 T) is observed at the MMS phase transition temperature.

scholarly journals The Effect of Different Atomic Substitution at Mn Site on Magnetocaloric Effect in Ni50Mn35Co2Sn13 Alloy

Crystals ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 329 ◽  
Author(s):  
Chengfen Xing ◽  
Hu Zhang ◽  
Kewen Long ◽  
Yaning Xiao ◽  
Hanning Zhang ◽  
...  
Keyword(s):  
Magnetocaloric Effect ◽  
Parent Phase ◽  
Martensitic Transition ◽  
Martensitic Transformation Temperature ◽  
Low Field ◽  
Transition Metal Element ◽  
Magnetocaloric Properties ◽  
Metal Element ◽  
Mn Content ◽  
Atomic Substitution

The effect of different atomic substitutions at Mn sites on the magnetic and magnetocaloric properties in Ni50Mn35Co2Sn13 alloy has been studied in detail. The substitution of Ni or Co for Mn atoms might lower the Mn content at Sn sites, which would reduce the d-d hybridization between Ni 3d eg states and the 3d states of excess Mn atoms at Sn sites, thus leading to the decrease of martensitic transformation temperature TM in Ni51Mn34Co2Sn13 and Ni50Mn34Co3Sn13 alloys. On the other hand, the substitution of Sn for Mn atoms in Ni50Mn34Co2Sn14 would enhance the p-d covalent hybridization between the main group element (Sn) and the transition metal element (Mn or Ni) due to the increase of Sn content, thus also reducing the TM by stabilizing the parent phase. Due to the reduction of TM, a magnetostructural martensitic transition from FM austenite to weak-magnetic martensite is realized in Ni51Mn34Co2Sn13 and Ni50Mn34Co2Sn14, resulting in a large magnetocaloric effect around room temperature. For a low field change of 3 T, the maximum ∆SM reaches as high as 30.9 J/kg K for Ni50Mn34Co2Sn14. A linear dependence of ΔSM upon μ0H has been found in Ni50Mn34Co2Sn14, and the origin of this linear relationship has been discussed by numerical analysis of Maxwell’s relation.

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