Effect of martensitic transformation and magnetic field on transport properties of Ni-Mn-Ga and Ni-Fe-Ga Heusler alloys

Barandiarán, J.M.; Chernenko, V.A.; Lázpita, P.; Gutiérrez, J.; Feuchtwanger, J.

doi:10.1103/physrevb.80.104404

Cited by 105 publications

(74 citation statements)

References 39 publications

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“…The result revealed by our measurements regarding the magnetoresistive effect being greater for the austenite than in martensite is in agreement with literature data [23].…”

Section: Magnetorezistive Effectsupporting

confidence: 82%

Magnetocaloric effect in Ni-Fe-Ga Heusler alloys with Co and Al substitutions

Ţolea

Sofronie

Crisan

et al. 2015

MATEC Web of Conferences

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Abstract. The functionality of the ferromagnetic shape memory alloys is related to the martensitic and magnetic order-disorder transformations, both of which may be tailored by doping with other elements or by suitable thermal treatments, so that alloys with concomitant (or sequential but close) structural and magnetic phase transitions may be obtained. Concerning the magnetocaloric applications, it is assumed that the thin melt-spun ribbons assure a more efficient heat transfer. In the present work we investigate the influence of Co and Al substitutions on magnetocaloric effect characteristics of NiFeGa in bulk and also in ribbons prepared by melt spinning method and subjected to different thermal treatments. X-ray diffraction, differential scanning calorimetry, magnetocaloric and magnetoresistive characterizations have been performed. The results highlight the differences between the bulk and the ribbons (both as prepared and annealed) and the role of substitutions.

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“…The result revealed by our measurements regarding the magnetoresistive effect being greater for the austenite than in martensite is in agreement with literature data [23].…”

Section: Magnetorezistive Effectsupporting

confidence: 82%

Magnetocaloric effect in Ni-Fe-Ga Heusler alloys with Co and Al substitutions

Ţolea

Sofronie

Crisan

et al. 2015

MATEC Web of Conferences

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“…These magnetoelastic transitions have been utilized in the intensive investigations of a large body of giant magnetocaloric materials [19][20][21][22][23][24][25][26][27] . In contrast, in typical FMMTs, the change of structural symmetries of austenite and martensite is remarkable [6][7][8][9][10][11] . The transition converts the different magnetic states (moment values and type of coupling) in between the two phases that have separate Curie (Néel) temperatures.…”

mentioning

confidence: 89%

“…T he ferromagnetic martensitic transition (FMMT) [1][2][3] , a coinciding crystallographic and magnetic transition mainly found in Fe-based and Heusler ferromagnetic alloys, is receiving increasing attention from both the magnetism and the material science community due to the massive variations of associated magnetoresponsive effects, such as magnetic-field-induced shape memory/strain effect [4][5][6][7] , magnetoresistance 8,9 , Hall effect 10 and magnetocaloric effect 11,12 . These effects are of interest for many potential technological applications like magnetic actuators 13,14 , sensors 15 , energy-harvesting devices 16 and solid-state magnetic refrigeration 17 .…”

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confidence: 99%

Stable magnetostructural coupling with tunable magnetoresponsive effects in hexagonal ferromagnets

et al. 2012

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The magnetostructural coupling between the structural and the magnetic transition has a crucial role in magnetoresponsive effects in a martensitic-transition system. A combination of various magnetoresponsive effects based on this coupling may facilitate the multifunctional applications of a host material. Here we demonstrate the feasibility of obtaining a stable magnetostructural coupling over a broad temperature window from 350 to 70 K, in combination with tunable magnetoresponsive effects, in mnniGe:Fe alloys. The alloy exhibits a magneticfield-induced martensitic transition from paramagnetic austenite to ferromagnetic martensite. The results indicate that stable magnetostructural coupling is accessible in hexagonal phasetransition systems to attain the magnetoresponsive effects with broad tunability.

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“…Their potential functional properties include: Magnetic superelasticity [1], large inverse magnetocaloric effect [2] and large magneto-resistance change [3]. Most of these effects are ascribed to the existence of a first order martensitic transformation with a strong magneto-structural coupling.…”

Section: Introductionmentioning

confidence: 99%

Martensitic Transformation in Ni-Mn-Sn-Co Heusler Alloys

Deltell

Escoda

Saurina

et al. 2015

Metals

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Thermal and structural austenite to martensite reversible transition was studied in melt spun ribbons of Ni50Mn40Sn5Co5, Ni50Mn37.5Sn7.5Co5 and Ni50Mn35Sn10Co5 (at. %) alloys. Analysis of X-ray diffraction patterns confirms that all alloys have martensitic structure at room temperature: four layered orthorhombic 4O for Ni50Mn40Sn5Co5, four layered orthorhombic 4O and seven-layered monoclinic 14M for Ni50Mn37.5Sn7.5Co5 and seven-layered monoclinic 14M for Ni50Mn35Sn5Co5. Analysis of differential scanning calorimetry scans shows that higher enthalpy and entropy changes are obtained for alloy Ni50Mn37.5Sn7.5Co5, whereas transition temperatures increases as increasing valence electron density.

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Effect of martensitic transformation and magnetic field on transport properties of Ni-Mn-Ga and Ni-Fe-Ga Heusler alloys

Cited by 105 publications

References 39 publications

Magnetocaloric effect in Ni-Fe-Ga Heusler alloys with Co and Al substitutions

Magnetocaloric effect in Ni-Fe-Ga Heusler alloys with Co and Al substitutions

Stable magnetostructural coupling with tunable magnetoresponsive effects in hexagonal ferromagnets

Martensitic Transformation in Ni-Mn-Sn-Co Heusler Alloys

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