|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials
||K-103: Magnetic and Microstructure Properties of Co-doped Rapidly Solidified Ni50Mn25-xCoxGa25 Heusler Alloys
||Imaddin Al-Omari, K. Meghana, D. K. Satapathy, T. Adhikary, S. Aich
|On-Site Speaker (Planned)
Cobalt-doped melt-spun ribbons of Ni50Mn25-x¬CoxGa25 were prepared to study the influence of cobalt on the magnetic properties of the NiMnGa based Heusler alloy. Bulk specimens were also prepared for a comparative study. The bulk specimens and the melt spun ribbons were annealed at 900 ⁰C for 5 hours followed by quenching. Microstructural studies revealed an extensively twinned structure which is beneficial for magnetic field induced strain. The magnetization measurements showed a reduction in the moment with an increase in the cobalt content from 78.4 emu/g to 52.7 emu/g for Co (x=6) and Co (x=10), respectively. A reduction was also observed in the TC when cobalt content was increased from Co (x=6) (TC =386K) to Co (x=10) (TC =263K).