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Superconducting Properties of ZrNi2-xTMxGa (TM = Cu, Co) and ZrNi2AlxGa1-x Heusler Compounds

Basaula, Dharma Raj
http://orcid.org/0000-0001-9030-3475
http://rave.ohiolink.edu/etdc/view?acc_num=miami1533320123951498

Abstract Details

2018, Master of Science, Miami University, Physics.
The superconducting properties of a series of ZrNi2-xTMxGa (TM = Cu, Co) and ZrNi2AlxGa1-x Heusler compounds have been explored by x-ray diffraction, scanning electron microscopy, electrical resistivity, dc magnetization and ac susceptibility measurements. In common, all samples exhibited the cubic L21 Heusler structure at room temperature. For x = 0.25, the ZrNi2-xCuxGa compounds demonstrated superconductivity and the superconducting transition temperature, TC, decreased with increasing Cu concentration. The dc magnetization data suggested the type-II superconductivity for all the Cu-doped compounds. Unlike ZrNi2-xCuxGa, up to the lowest measuring temperature of 1.75 K, no superconductivity was observed in any of the ZrNi2-xCoxGa compounds. All the Al-doped compounds also showed type-II superconductivity with a decrease in Tc. In addition, the ZrNi2AlxGa1-x compounds showed a new phase transition a few kelvins above superconducting transition. The experimental results are presented and discussed in detail.
Mahmud Khan, Dr. (Advisor)
Herbert Jaeger, Dr. (Committee Member)
Khalid Eid, Dr. (Committee Member)
77 p.
Physics
Superconductivity, Physics, Heusler, Science

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Citations

  • Basaula, D. R. (2018). Superconducting Properties of ZrNi2-xTMxGa (TM = Cu, Co) and ZrNi2AlxGa1-x Heusler Compounds [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1533320123951498

    APA Style (7th edition)

  • Basaula, Dharma Raj. Superconducting Properties of ZrNi2-xTMxGa (TM = Cu, Co) and ZrNi2AlxGa1-x Heusler Compounds. 2018. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1533320123951498.

    MLA Style (8th edition)

  • Basaula, Dharma Raj. "Superconducting Properties of ZrNi2-xTMxGa (TM = Cu, Co) and ZrNi2AlxGa1-x Heusler Compounds." Master's thesis, Miami University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=miami1533320123951498

    Chicago Manual of Style (17th edition)

miami1533320123951498
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© 2018, all rights reserved.
This open access ETD is published by Miami University and OhioLINK.