Martensitic transformation and magnetocaloric properties of NiCoMnSn magnetic shape memory alloys Academic Article

abstract

• 2018 Elsevier Ltd We report on the magnetic, magnetocaloric properties, and hysteresis of Ni45Co5Mn38Sn12 and Ni45Co5Mn38.5Sn11.5 Heusler polycrystalline alloys under several magnetic field values. Both alloys have a moderate magnetization difference (70 emu/gr) between austenite and martensite phase with a moderate thermal hysteresis (8 K) around the martensitic transition. Magnetic field dependent measurements reveal that the application of a magnetic field stabilizes the austenite phase, which has higher magnetization. Both alloys have substantial inverse magnetic entropy changes and adiabatic temperature changes. In addition, we investigate the accessibility of the calculated entropy change that is quantified by means of the minimum magnetic field required to start and to complete the magnetostructural phase transition.

authors

• Karaman, Ibrahim

published proceedings

• INTERMETALLICS

author list (cited authors)

• Emre, B., Yuce, S., Bruno, N. M., & Karaman, I.

citation count

• 15

complete list of authors

• Emre, Baris||Yuce, Suheyla||Bruno, Nickolaus M||Karaman, Ibrahim

publication date

• March 2019

publisher

• Elsevier  Publisher

published in

• Intermetallics  Journal

keywords

• Ferromagnetic Shape Memory Alloy
• Magnetic Properties
• Magnetocaloric Effect
• Martensitic Transformation

Digital Object Identifier (DOI)

• 10.1016/j.intermet.2018.12.011

start page

• 65

end page

• 70

volume

• 106

URL

• http://dx.doi.org/10.1016/j.intermet.2018.12.011