Microstructure and magnetic properties of Co-doped rapidly solidified Ni                         50                         Mn                         25−x                         Co                         x                         Ga                         25                          Heusler alloys

K. Meghana; D. K. Satapathy; I. A. Al-Omari; T. Adhikary; S. Aich

doi:10.1016/j.matlet.2019.02.102

Microstructure and magnetic properties of Co-doped rapidly solidified Ni ₅₀ Mn _25−x Co _x Ga ₂₅ Heusler alloys

K. Meghana, D. K. Satapathy, I. A. Al-Omari, T. Adhikary, S. Aich^*

^*Corresponding author for this work

Physics

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Cobalt-doped melt-spun ribbons of Ni ₅₀ Mn _25−x Co _x Ga ₂₅ 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 °C for 5 h 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 T _C when cobalt content was increased from Co (x = 6) (T _C = 386 K) to Co (x = 10) (T _C = 263 K).

Original language	English
Pages (from-to)	162-165
Number of pages	4
Journal	Materials Letters
Volume	245
DOIs	https://doi.org/10.1016/j.matlet.2019.02.102
Publication status	Published - Jun 15 2019

Keywords

Compound twins
Curie transition
Heusler alloy
Magnetic materials
Secondary twinning
Shape memory materials

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matlet.2019.02.102

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Meghana, K., Satapathy, D. K., Al-Omari, I. A., Adhikary, T., & Aich, S. (2019). Microstructure and magnetic properties of Co-doped rapidly solidified Ni ₅₀ Mn _25−x Co _x Ga ₂₅ Heusler alloys Materials Letters, 245, 162-165. https://doi.org/10.1016/j.matlet.2019.02.102

Microstructure and magnetic properties of Co-doped rapidly solidified Ni ₅₀ Mn _25−x Co _x Ga ₂₅ Heusler alloys . / Meghana, K.; Satapathy, D. K.; Al-Omari, I. A. et al.
In: Materials Letters, Vol. 245, 15.06.2019, p. 162-165.

Research output: Contribution to journal › Article › peer-review

Meghana, K, Satapathy, DK, Al-Omari, IA, Adhikary, T & Aich, S 2019, ' Microstructure and magnetic properties of Co-doped rapidly solidified Ni ₅₀ Mn _25−x Co _x Ga ₂₅ Heusler alloys ', Materials Letters, vol. 245, pp. 162-165. https://doi.org/10.1016/j.matlet.2019.02.102

Meghana K, Satapathy DK, Al-Omari IA, Adhikary T, Aich S. Microstructure and magnetic properties of Co-doped rapidly solidified Ni ₅₀ Mn _25−x Co _x Ga ₂₅ Heusler alloys Materials Letters. 2019 Jun 15;245:162-165. doi: 10.1016/j.matlet.2019.02.102

Meghana, K. ; Satapathy, D. K. ; Al-Omari, I. A. et al. / Microstructure and magnetic properties of Co-doped rapidly solidified Ni ₅₀ Mn _25−x Co _x Ga ₂₅ Heusler alloys In: Materials Letters. 2019 ; Vol. 245. pp. 162-165.

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title = " Microstructure and magnetic properties of Co-doped rapidly solidified Ni 50 Mn 25−x Co x Ga 25 Heusler alloys ",

abstract = " Cobalt-doped melt-spun ribbons of Ni 50 Mn 25−x Co x Ga 25 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 °C for 5 h 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 T C when cobalt content was increased from Co (x = 6) (T C = 386 K) to Co (x = 10) (T C = 263 K).",

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