Magnetization behavior of NiMnGa alloy nanowires prepared by DC electrodeposition

•NiMnGa NWs were fabricated by Simple and Low-cost DC electrodeposition method.•Concentration of Mn increased and that of Ga decreased with rise in potential.•Magnetic properties of NiMnGa NWs can be modified by changing its composition.•Ni2.8Mn0.2Ga1.0 sample shows linear dependence of coercivity o...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2020-03, Vol.498, p.166232, Article 166232
Main Authors: Javed, K., Zhang, X.M., Parajuli, S., Ali, S.S., Ahmad, N., Shah, S.A., Irfan, M., Feng, J.F., Han, X.F.
Format: Article
Language:English
Subjects:
Actuators
Coercivity
Cost effectiveness
Electrodeposition
Ferromagnetism
FSMAs
Low temperature
Magnetic properties
Magneto-elastic materials
Nanowires
NiMnGa
Refrigeration
Room temperature
Sensors
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Summary:•NiMnGa NWs were fabricated by Simple and Low-cost DC electrodeposition method.•Concentration of Mn increased and that of Ga decreased with rise in potential.•Magnetic properties of NiMnGa NWs can be modified by changing its composition.•Ni2.8Mn0.2Ga1.0 sample shows linear dependence of coercivity on temperature. NiMnGa have potential applications for magnetic field sensors, strain sensors, actuators and solid-state refrigeration, due to their unique microstructures and crystalline phases at various temperatures. Synthesis of Heusler type NiMnGa nanowires (diameter ~200 nm) has been done by low cost DC electrodeposition method using AAO templates. This method was employed due to its cost effectiveness, simplicity, and precise control over composition, diameter and length of nanotubes/nanowires. It has been observed that Ga concentration decreases as Mn concentration increases with the rise in potential. Magnetic properties have been studied at room temperature as well as at low temperatures. It has been found that coercivity (Hc) increases as temperature decreases. The nanowires have maintained ferromagnetic behavior from 10 K to RT.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2019.166232