Features of magnetoresistance and magnetic properties in Bi95.69Mn3.69Fe0.62

A study of textured, polycrystalline Bi95.69Mn3.69Fe0.62 containing two phases: the bismuth matrix and inclusions of the α-BiMn phase. It is shown that the anomalous behavior of the magnetization temperature dependences can be linked to the reorientation transition of the Mn magnetic moments in the...

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Veröffentlicht in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2018-11, Vol.44 (11), p.1153-1160
Hauptverfasser: Terekhov, A. V., Rogacki, K., Solovjov, A. L., Bludov, A. N., Prokhvatilov, A. I., Meleshko, V. V., Zolochevskii, I. V., Khristenko, E. V., Cwik, J., Los, A., Shevchenko, A. D., Kovalyuk, Z. D., Ivasishin, O. M.
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Sprache:eng
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Zusammenfassung:A study of textured, polycrystalline Bi95.69Mn3.69Fe0.62 containing two phases: the bismuth matrix and inclusions of the α-BiMn phase. It is shown that the anomalous behavior of the magnetization temperature dependences can be linked to the reorientation transition of the Mn magnetic moments in the α-BiMn phase, caused by the change in the sign of the magnetic anisotropy constant. It is established that the temperature dependences of the electrical resistivity in a magnetic field are non-monotonic, and that the magnetoresistance is positive in all temperature ranges, reaching a maximum value of 3033% for a magnetic field of 140 kOe, when the magnetic field is perpendicular to the transport current. A strong anisotropy of electrical resistivity is measured in a magnetic field. It is assumed that the anomalous behavior of the electrical resistivity as a function of temperature in Bi95.69Mn3.69Fe0.62, as compared to pure bismuth, is linked to a change in the overlap between the electron and the hole Fermi surfaces under the influence of α-BiMn phase magnetism, as well as the magnitude and direction of the external magnetic field.
ISSN:1063-777X
1090-6517
DOI:10.1063/1.5060969