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Magnetism and Associated Exchange Bias Effects in Mn2Ni1+xGa1-x Heusler Alloys and Selected Fe Doped Derivatives

Biswas, Sutapa
http://orcid.org/0000-0002-3646-2712
http://rave.ohiolink.edu/etdc/view?acc_num=miami1596051931485739

Abstract Details

2020, Master of Science, Miami University, Physics.
A series of Mn based intermetallic bulk Mn2Ni1+xGa1-x (0 ≤ x ≤ 0.65) alloys and melt-spun ribbons of selected Fe doped Mn2-xFexNi1.4Ga0.6 (x = 0.25, 0.5, 1) derivatives have been investigated for their magnetic and exchange bias properties. The bulk alloys were prepared by arc melting and annealing techniques while the ribbons were prepared by arc melting followed by melt spinning. All samples, bulk and ribbons, showed similar crystalline properties. For x > 0.2 all the Mn2Ni1+xGa1-x bulk samples showed exchange bias properties that enhanced with increasing Ni content. The Mn2-xFexNi1.4Ga0.6 (x <0.1) melt-spun ribbons showed exchange bias properties when measurements were done under both zero-field cooled and field cooled cooling conditions. Scanning electron microscopy images showed that no grain formation occurred in the bulk samples but well-defined grains formed on the surface of the melt-spun ribbons. The size of the grains increased with annealing, which significantly change the EB properties of the ribbons. The experimental results are presented and discussed in this Thesis.
Mahmud Khan (Advisor)
Herbert Jaeger (Committee Member)
Steve Alexander (Committee Member)
52 p.
Physics
Exchange bias, nanostructured ribbons

Recommended Citations

Citations

  • Biswas, S. (2020). Magnetism and Associated Exchange Bias Effects in Mn2Ni1+xGa1-x Heusler Alloys and Selected Fe Doped Derivatives [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1596051931485739

    APA Style (7th edition)

  • Biswas, Sutapa. Magnetism and Associated Exchange Bias Effects in Mn2Ni1+xGa1-x Heusler Alloys and Selected Fe Doped Derivatives. 2020. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1596051931485739.

    MLA Style (8th edition)

  • Biswas, Sutapa. "Magnetism and Associated Exchange Bias Effects in Mn2Ni1+xGa1-x Heusler Alloys and Selected Fe Doped Derivatives." Master's thesis, Miami University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=miami1596051931485739

    Chicago Manual of Style (17th edition)

miami1596051931485739
249
© 2020, some rights reserved.Creative Commons License Magnetism and Associated Exchange Bias Effects in Mn2Ni1+xGa1-x Heusler Alloys and Selected Fe Doped Derivatives by Sutapa Biswas is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Miami University and OhioLINK.