ChemInform Abstract: Metamagnetic Shape Memory Effect and Magnetic Properties of Ni-Mn Based Heusler Alloys

ChemInform ◽  
2012 ◽  
Vol 43 (12) ◽  
pp. no-no
Author(s):  
R. Kainuma ◽  
W. Ito ◽  
R. Y. Umetsu ◽  
V. V. Khovaylo ◽  
T. Kanomata
Keyword(s):  
Magnetic Properties ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Heusler Alloys

Ferromagnetic Shape Memory Heusler Alloys

2012 ◽  
Vol 189 ◽  
pp. 189-208 ◽  
Author(s):  
Vijay Srivastava ◽  
Kanwal Preet Bhatti
Keyword(s):  
Magnetic Properties ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Heusler Alloy ◽  
Heusler Alloys ◽  
Structural Similarity ◽  
Magnetic Shape Memory ◽  
Half Metallicity ◽  
Ferromagnetic Shape Memory

Although Heusler alloys have been known for more than a century, but since the last decade there has been a quantum jump in research in this area. Heusler alloys show remarkable properties, such as ferromagnetic shape memory effect, magnetocaloric effect, half metallicity, and most recently it has been shown that it can be used for direct conversion of heat into electricity. Heusler alloys Ni-Mn-Z (Z=Ga, Al, In, Sn, Sb), show a reversible martensitic transformation and unusual magnetic properties. Other classes of intermetallic Heusler alloy families that are half metallic (such as the half Heusler alloys Ni-Mn-Sb and the full Heusler alloy Co2MnGe) are attractive because of their high Curie temperature and structural similarity to binary semiconductors. Unlike Ni-Mn-Ga, Ni-Mn-In and Ni-Mn-Sn transform from ferromagnetic austenite to non-ferromagnetic martensite. As is consistent with the Clausius-Clapeyron equation, the martensitic phase transformation can be manipulated by a magnetic field, leading to possible applications of these materials enabling the magnetic shape memory effect, energy conversion and solid state refrigeration. In this paper, we summarize the salient features of Heusler alloys, like the structure, magnetic properties and potential application of this family of alloys in industry.

Metamagnetic Shape Memory Effect and Magnetic Properties of Ni-Mn Based Heusler Alloys

2011 ◽  
Vol 684 ◽  
pp. 139-150 ◽  
Author(s):  
Ryosuke Kainuma ◽  
W. Ito ◽  
R.Y. Umetsu ◽  
V.V. Khovaylo ◽  
T. Kanomata
Keyword(s):  
Magnetic Field ◽  
Phase Transition ◽  
Magnetic Properties ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Heusler Alloys ◽  
Parent Phase ◽  
Martensite Phase ◽  
Basic Information

In some Ni-Mn-In- and Ni-Mn-Sn-based Heusler-type alloys, martensitic transformation from the ferromagnetic parent phase to the paramagnetic martensite phase appears and magnetic field-induced reverse transformation, namely, metamagnetic phase transition, is detected. In this paper, the metamagnetic shape memory effect due to the metamagnetic phase transition and the magnetostress effect in the Ni-Co-Mn-In alloys are introduced and the phase diagrams of Ni50Mn50-yXy (X: In, Sn, Sb) alloys are shown as basic information. Furthermore, the magnetic properties of both the parent and martensite phases in the Ni-Mn-In- and Ni-Mn-Sn-based metamagnetic shape memory alloys are also reviewed.

Magnetic properties of Cu–Mn–Al alloys with shape memory effect

1998 ◽  
Vol 46 (1) ◽  
pp. 137-147 ◽  
Author(s):  
M.O. Prado ◽  
F.C. Lovey ◽  
L. Civale
Keyword(s):  
Magnetic Properties ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Al Alloys

scholarly journals NiMn-Based Metamagnetic Shape Memory Alloys

2009 ◽  
Vol 635 ◽  
pp. 23-31 ◽  
Author(s):  
Ryosuke Kainuma ◽  
K. Ito ◽  
W. Ito ◽  
R.Y. Umetsu ◽  
T. Kanomata ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Powder Metallurgy ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Parent Phase ◽  
Martensite Phase ◽  
Ternary Alloys ◽  
Plasma Sintering ◽  
Spark Plasma

The magnetic properties of the parent and martensite phases of the Ni2Mn1+xSn1-x and Ni2Mn1+xIn1-x ternary alloys and the magnetic field-induced shape memory effect obtained in NiCoMnIn alloys are reviewed, and our recent work on powder metallurgy performed for NiCoMnSn alloys is also introduced. The concentration dependence of the total magnetic moment for the parent phase in the NiMnSn alloys is very different from that in the NiMnIn alloys, and the magnetic properties of the martensite phase with low magnetization in both NiMnSn and NiMnIn alloys has been confirmed by Mössbauer examination as being paramagnetic, but not antiferromagnetic. The ductility of NiCoMnSn alloys is drastically improved by powder metallurgy using the spark plasma sintering technique, and a certain degree of metamagnetic shape memory effect has been confirmed.

Direct measurement of shape memory effect for Ni54Mn21Ga25, Ni50Mn41.2In8.8 Heusler alloys in high magnetic field

2019 ◽  
Vol 482 ◽  
pp. 317-322 ◽  
Author(s):  
Dmitry S. Kuchin ◽  
Elvina T. Dilmieva ◽  
Yurii S. Koshkid'ko ◽  
Alexander P. Kamantsev ◽  
Victor V. Koledov ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Direct Measurement ◽  
High Magnetic Field ◽  
Heusler Alloys

Martensitic transformation and shape memory effect at high temperatures in off-stoichiometric Co2VSi Heusler alloys

2016 ◽  
Vol 676 ◽  
pp. 191-196 ◽  
Author(s):  
Hengxing Jiang ◽  
Xiao Xu ◽  
Toshihiro Omori ◽  
Makoto Nagasako ◽  
Jingjing Ruan ◽  
...  
Keyword(s):  
Martensitic Transformation ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
High Temperatures ◽  
Heusler Alloys

Cooling-induced shape memory effect and inverse temperature dependence of superelastic stress in Co2Cr(Ga,Si) ferromagnetic Heusler alloys

2013 ◽  
Vol 103 (16) ◽  
pp. 164104 ◽  
Author(s):  
Xiao Xu ◽  
Toshihiro Omori ◽  
Makoto Nagasako ◽  
Akinari Okubo ◽  
Rie Y. Umetsu ◽  
...  
Keyword(s):  
Shape Memory ◽  
Temperature Dependence ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Heusler Alloys ◽  
Inverse Temperature

scholarly journals The Ductility and Shape-Memory Properties of Ni–Mn–Ga–Cu Heusler Alloys

2021 ◽  
Author(s):  
Agnieszka Brzoza-Kos ◽  
Eduard Cesari ◽  
Maciej Jakub Szczerba
Keyword(s):  
Crystal Structure ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Heusler Alloys ◽  
Potential Candidate ◽  
Recoverable Strain ◽  
Cu Content ◽  
Memory Applications ◽  
Large Shape

AbstractThe effect of Cu addition on crystal structure, compressive properties and shape-memory effect of Ni50Mn25Ga25−xCux alloys was studied. With increasing Cu content, the type of crystal structure evolves following a sequence: L21 → 10M → 2M → 2M+γ. Addition of Cu significantly improves room temperature ductility. In polycrystalline Ni50Mn25Ga17Cu8 alloy, a full recoverable strain equal to 7 pct was achieved. High martensitic transformation temperature and large shape-memory effect makes this material potential candidate in high-temperature shape-memory applications.

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