Study of structural, magnetic and electronic properties of Ni-Fe-Ga based ferromagnetic shape memory alloys

Madhusmita Baral; Tufan Roy; Balaji Mondal; Aparna Chakrabarti; Tapas Ganguli

doi:10.1063/1.4980592

Study of structural, magnetic and electronic properties of Ni-Fe-Ga based ferromagnetic shape memory alloys

Madhusmita Baral, Tufan Roy, Balaji Mondal, Aparna Chakrabarti, Tapas Ganguli

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The structural, magnetic and electronic properties of two samples with nominal compositions Ni₅₀Fe₂₀Ga₃₀ (NFG-1) and Ni₄₅Fe₂₅Ga₃₀ (NFG-2) have been studied. With increasing Fe substitution in place of Ni atoms, the valence electron concentration per unit cell (e/a) ratio decreased from 7.59 to 7.42. This decrease in e/a ratio results in increase Tc and saturation magnetization in NFG-2 compared to NFG-1. Photoelectron spectroscopy (PES) measurements have been carried out at 20 K and 300 K for both the samples. A comparison of the calculated (first principles) and the measured density of states (by PES) show that NFG-1 undergoes a martensite phase transition, whereas no such transition is observed for NFG-2.

Original language	English
Title of host publication	DAE Solid State Physics Symposium 2016
Editors	Surendra Singh, Saibal Basu, Shovit Bhattacharya, Amitabh Das
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735415003
DOIs	https://doi.org/10.1063/1.4980592
Publication status	Published - 2017 May 19
Externally published	Yes
Event	61st DAE Solid State Physics Symposium - Bhubaneswar, Odisha, India Duration: 2016 Dec 26 → 2016 Dec 30

Publication series

Name	AIP Conference Proceedings
Volume	1832
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	61st DAE Solid State Physics Symposium
Country/Territory	India
City	Bhubaneswar, Odisha
Period	16/12/26 → 16/12/30

Keywords

Electronic Structure
Photoelectron Spectroscopy

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.4980592

Cite this

Baral, M., Roy, T., Mondal, B., Chakrabarti, A., & Ganguli, T. (2017). Study of structural, magnetic and electronic properties of Ni-Fe-Ga based ferromagnetic shape memory alloys. In S. Singh, S. Basu, S. Bhattacharya, & A. Das (Eds.), DAE Solid State Physics Symposium 2016 [090039] (AIP Conference Proceedings; Vol. 1832). American Institute of Physics Inc.. https://doi.org/10.1063/1.4980592

Study of structural, magnetic and electronic properties of Ni-Fe-Ga based ferromagnetic shape memory alloys. / Baral, Madhusmita; Roy, Tufan; Mondal, Balaji et al.

DAE Solid State Physics Symposium 2016. ed. / Surendra Singh; Saibal Basu; Shovit Bhattacharya; Amitabh Das. American Institute of Physics Inc., 2017. 090039 (AIP Conference Proceedings; Vol. 1832).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Baral, M, Roy, T, Mondal, B, Chakrabarti, A & Ganguli, T 2017, Study of structural, magnetic and electronic properties of Ni-Fe-Ga based ferromagnetic shape memory alloys. in S Singh, S Basu, S Bhattacharya & A Das (eds), DAE Solid State Physics Symposium 2016., 090039, AIP Conference Proceedings, vol. 1832, American Institute of Physics Inc., 61st DAE Solid State Physics Symposium, Bhubaneswar, Odisha, India, 16/12/26. https://doi.org/10.1063/1.4980592

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abstract = "The structural, magnetic and electronic properties of two samples with nominal compositions Ni50Fe20Ga30 (NFG-1) and Ni45Fe25Ga30 (NFG-2) have been studied. With increasing Fe substitution in place of Ni atoms, the valence electron concentration per unit cell (e/a) ratio decreased from 7.59 to 7.42. This decrease in e/a ratio results in increase Tc and saturation magnetization in NFG-2 compared to NFG-1. Photoelectron spectroscopy (PES) measurements have been carried out at 20 K and 300 K for both the samples. A comparison of the calculated (first principles) and the measured density of states (by PES) show that NFG-1 undergoes a martensite phase transition, whereas no such transition is observed for NFG-2.",

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AU - Ganguli, Tapas

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N2 - The structural, magnetic and electronic properties of two samples with nominal compositions Ni50Fe20Ga30 (NFG-1) and Ni45Fe25Ga30 (NFG-2) have been studied. With increasing Fe substitution in place of Ni atoms, the valence electron concentration per unit cell (e/a) ratio decreased from 7.59 to 7.42. This decrease in e/a ratio results in increase Tc and saturation magnetization in NFG-2 compared to NFG-1. Photoelectron spectroscopy (PES) measurements have been carried out at 20 K and 300 K for both the samples. A comparison of the calculated (first principles) and the measured density of states (by PES) show that NFG-1 undergoes a martensite phase transition, whereas no such transition is observed for NFG-2.

AB - The structural, magnetic and electronic properties of two samples with nominal compositions Ni50Fe20Ga30 (NFG-1) and Ni45Fe25Ga30 (NFG-2) have been studied. With increasing Fe substitution in place of Ni atoms, the valence electron concentration per unit cell (e/a) ratio decreased from 7.59 to 7.42. This decrease in e/a ratio results in increase Tc and saturation magnetization in NFG-2 compared to NFG-1. Photoelectron spectroscopy (PES) measurements have been carried out at 20 K and 300 K for both the samples. A comparison of the calculated (first principles) and the measured density of states (by PES) show that NFG-1 undergoes a martensite phase transition, whereas no such transition is observed for NFG-2.

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Study of structural, magnetic and electronic properties of Ni-Fe-Ga based ferromagnetic shape memory alloys

Abstract

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