|Title||Mechanical and electrical properties of low temperature phase MnBi|
|Publication Type||Journal Article|
|Year of Publication||2016|
|Authors||Jiang, XJ, Roosendaal, T, Lu, XC, Palasyuk, O, Dennis, KW, Dahl, M, Choi, JP, Polikarpov, E, Marinescu, M, Cui, J|
|Journal||Journal of Applied Physics|
|Type of Article||Article|
ation on the mechanical and electrical properties of bulk LTP MnBi and their temperature dependence. A MnBi ingot was prepared using an arc melting technique and subsequently underwent grinding, sieving, heat treatment, and cryomilling. The resultant powders with a particle size of similar to 5 mu m were magnetically aligned, cold pressed, and sintered at a predefined temperature. Micro-hardness testing was performed on a part of original ingot and we found that the hardness of MnBi was 109 +/- 15 HV. The sintered magnets were subjected to compressive testing at different temperatures and it was observed that a sintered MnBi magnet fractured when the compressive stress exceeded 193 MPa at room temperature. Impedance spectra were obtained using electrochemical impedance spectroscopy at various temperatures and we found that the electrical resistance of MnBi at room temperature was about 6.85 mu Omega m. (c) 2016 AIP Publishing LLC.
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