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Magnetic and Magnetocaloric Properties of the Multi-Component Mn0.5Fe0.5Ni0.95Cr0.05Si0.95Al0.05 Intermetallic Compound

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2024, Master of Science, Miami University, Physics.
The magnetocaloric effect is a phenomenon by virtue of which magnetic materials undergo temperature change in external magnetic fields. Materials with substantial magnetocaloric effects have potential application in magnetic refrigeration, which is significantly more energy-efficient than conventional gas-based cooling methods. In this thesis research, the structural and magnetic properties of the multi-component intermetallic compound, Mn0.5Fe0.5Ni0.95Cr0.05Si0.95Al0.05 have been studied. Bulk, powdered, and polylactic acid (PLA) based composite filaments containing nominal (27, 54 and 57) wt% compositions of Mn0.5Fe0.5Ni0.95Cr0.05Si0.95Al0.05 powder have been synthesized and studied. The x-ray diffraction patterns confirmed that all samples exhibited the Ni2Intype hexagonal (space group P63/mmc) and the TiNiSi-type orthorhombic (space group Pnma) crystal structures at room temperature. A first order magnetic phase transition accompanied by thermal hysteresis was observed in all samples. A maximum entropy change of -42 J kg-1K-1 was observed around 322 K at 5 T magnetic field in the bulk sample with the refrigeration capacity (RC) of 194 J/kg. The experimental results for all samples are presented and discussed.
Mahmud Khan (Advisor)
52 p.

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Citations

  • Bhatta, A. (2024). Magnetic and Magnetocaloric Properties of the Multi-Component Mn0.5Fe0.5Ni0.95Cr0.05Si0.95Al0.05 Intermetallic Compound [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1721924923784326

    APA Style (7th edition)

  • Bhatta, Ashika. Magnetic and Magnetocaloric Properties of the Multi-Component Mn0.5Fe0.5Ni0.95Cr0.05Si0.95Al0.05 Intermetallic Compound. 2024. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1721924923784326.

    MLA Style (8th edition)

  • Bhatta, Ashika. "Magnetic and Magnetocaloric Properties of the Multi-Component Mn0.5Fe0.5Ni0.95Cr0.05Si0.95Al0.05 Intermetallic Compound." Master's thesis, Miami University, 2024. http://rave.ohiolink.edu/etdc/view?acc_num=miami1721924923784326

    Chicago Manual of Style (17th edition)