Magnetic and Martensitic Phase Transformations in a Ni54Ga27Fe19 Alloy
TLDR
In this paper, the martensitic and magnetic transitions of Ni 54 Ga 27 Fe 19 alloy were investigated by differential scanning calorimetry and X-ray powder diffraction and with a vibrating sample magnetometer.Abstract:
The martensitic and magnetic transitions of Ni 54 Ga 27 Fe 19 alloy were investigated by differential scanning calorimetry and X-ray powder diffraction and with a vibrating sample magnetometer. The alloy is martensitically transformed from a L2 1 to a martensite phase with a 14M (7R) structure. The ferromagnetic transition is also accompanied by the martensitic transformation from a paramagnetic parent phase to a ferromagnetic martensite phase in the temperature interval between M s (= 293 K) and M f (= 274 K). The Ni-Ga-Fe system is promising as a ferromagnetic shape memory alloy.read more
Citations
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Journal ArticleDOI
Magnetic-field-induced shape recovery by reverse phase transformation.
Ryosuke Kainuma,Y. Imano,Wataru Ito,Yuji Sutou,Haruhiko Morito,Satoshi Okamoto,Osamu Kitakami,Katsunari Oikawa,Asaya Fujita,Takeshi Kanomata,Kiyohito Ishida +10 more
TL;DR: The magnetic-field-induced shape recovery of a compressively deformed NiCoMnIn alloy is reported, attributing this deformation behaviour to a reverse transformation from the antiferromagnetic (or paramagnetic) martensitic to the ferromagnetic parent phase in the Ni45Co5Mn36.7In13.3 single crystal.
Journal ArticleDOI
Modelling the phase diagram of magnetic shape memory Heusler alloys
Peter Entel,Vasiliy D. Buchelnikov,Vladimir Khovailo,Alexey T. Zayak,Waheed A. Adeagbo,Waheed A. Adeagbo,Markus E. Gruner,Heike C. Herper,Eberhard F. Wassermann +8 more
TL;DR: In this article, the authors have modelled the phase diagram of magnetic shape memory alloys of the Heusler type by using the phenomenological Ginzburg-Landau theory and found that the driving force for structural transformations is considerably enhanced by the extremely low lying optical modes of Ni, which interfere with the acoustical modes enhancing phonon softening of the TA2 mode.
Journal ArticleDOI
Martensitic and Magnetic Transformation Behaviors in Heusler-Type NiMnIn and NiCoMnIn Metamagnetic Shape Memory Alloys
TL;DR: In this paper, the authors investigated the martensitic and magnetic transformation behaviors of Ni50MnIn, Ni45Co5MnIN, and Ni42.5Co7.5mnIn alloys by differential scanning calorimetry (DSC), vibrating sample magnetometry (VSM), and transmission electron microscopy (TEM).
Journal ArticleDOI
Phase transitions in Ni2+xMn1-xGa with a high Ni excess
Vladimir Khovaylo,Vasilii D Buchel'nikov,Ryosuke Kainuma,V. V. Koledov,Makoto Ohtsuka,Vladimir G. Shavrov,Toshiyuki Takagi,Sergey Taskaev,Alexander N. Vasiliev +8 more
TL;DR: In this paper, the experimental phase diagram, constructed from differential scanning calorimetry, transport and magnetic measurements, exhibits distinctive feature in a compositional interval, where martensitic and magnetic transitions merge in a first-order magnetostructural phase transition ferromagnetic martensite and paramagnetic austenite.
Journal ArticleDOI
Elastocaloric effect in Ni50Fe19Ga27Co4 single crystals
TL;DR: The elastocaloric effect of Ni 50 Fe 19 Ga 27 Co 4 (at.%) single crystals exhibiting first-order martensitic transformations has been studied at temperatures of 298-448 K under different compressive stresses.
References
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Large magnetic‐field‐induced strains in Ni2MnGa single crystals
TL;DR: In this paper, the superelastic motion of twin boundaries in the martensitic phase of Ni2MnGa with magnetic fields of 8 kOe applied at 265 K was found to be associated with the staining.
Journal ArticleDOI
Magnetostriction of martensite
Richard D. James,Manfred Wuttig +1 more
TL;DR: In this article, a general strategy for inducing magnetostriction in ferromagnetic martensitic materials is described, and an analysis of domain redistribution caused by a magnetic field is given.
Journal ArticleDOI
Structural and magnetic phase transitions in shape-memory alloys Ni 2 + x Mn 1 − x Ga
A. N. Vasil’ev,A. D. Bozhko,Vladimir Khovailo,I. E. Dikshtein,Vladimir G. Shavrov,Vasiliy D. Buchelnikov,Minoru Matsumoto,Shoichiro Suzuki,Toshiyuki Takagi,Junji Tani +9 more
TL;DR: In this article, a phase diagram of the cubic ferromagnet describing possible structural and magnetic transitions is obtained theoretically and an estimate of the magnetic field influence on the temperature of martensitic transformation in the studied alloys is given.