Anomalous Anisotropic Magnetoresistance And Magnetization In Mn3.69Bi95.69Fe0.62

A. V. Terekhov, A. L. Solovjov, A. I. Prokhvatilov, V. V. Meleshko, I. V. Zolochevskii, J. Cwik, A. Los, A. D. Shevchenko, O. M. Ivasishin, Z. D. Kovalyuk

Abstract


It was found that the Mn3.69Bi95.69Fe0.62 consists of two phases, namely of a bismuth matrix and BiMn inclusions. It is shown that the samples have a crystalline texture. Independently on the applied field orientation, maximum on the temperature dependence of magnetization is detected at Tmax ≈ 85 K, which is associated with the reorientation transition of the magnetic moments of Mn for αBiMn phase. In turn, the electrical resistivity also demonstrates maximum at Tmax ≈58 K in a magnetic field of 800 kA/m when HI. It is established that the maximum of increases and is shifted toward higher temperature Tmax ≈94 K when field increasing up to 2400 kA/m. At the same time no clear maximum on is observed for H || I. It is shown that the relative magnetoresistance,  is increased both with decreasing temperature and with increase of the magnetic field. The measured enhancement reaches ≈ 250% for H || Iand ≈ 2400% for HI in magnetic field of 2400 kA/m. Thus, the strong anisotropy of and is established both for HI and H || I. Possible explanation of observed anomalous behavior of the temperature dependences of the electrical resistivity in magnetic fields has been proposed.


Keywords


huge anisotropic magnetoresistance; reorientation transition; electron and hole Fermi surfaces; MnBi alloys; crystalline texture; bismuth

Full Text:

PDF

References


Yong-Sheng Liu, Jin-Cang Zhang, Zhong-Ming Ren, Min-An Gu, Jing-Jing Yang, Shi-Xum Cao, Zheng Long Yang Fabrication, Structural and Magnetic Properties for Aligned MnBi // Chin. Phys. Lett. – 2010. – Vol. 27. – P.097502-1 - 097502-4.

Rama Rao N.V., Gabay A.M., Hadjipanayis G.C. Anisotropic fully dense MnBi permanent magnet with high energy product and high coercivity at elevated temperatures // J. Phys. D: Appl. Phys. – 2013. – Vol. 46. - P.062001-1 - 062001-4.

Svetlov V.N., Terekhov A.V., Stepanov V.B., Solovjov A.L., Khristenko E.V., Ivasishin O.M., Shevchenko A.D., Kovalyuk Z.D. Anisotropy of resistivity in Bi93.99Mn6Fe0.01 // Low Temperature Physics. – 2015. – Vol.41. – No.4. – P.314‑317.

Oikawa Katsunari, Mitsui Yoshifuru, Koyama Keiichi, Anzai Koichi Thermodynamic Assessment of the Bi-Mn System // Materials Transactions. – 2011. – Vol.52. – No.11. - P.2032-2039.

Yin F., Gu N., Shigematsu T., Nakanishi N. Sintering formation of low temperature phase MnBi and its disordering in mechanical milling // J. Mater. Sci. Technol. – 1996. – Vol.12. – P.335-341.

Yang J.B., Yelon W.B., James W.J., Cai Q., Kornecki M., Roy S., Ali N., l’Heritier Ph. Crystal structure, magnetic properties and electronic structure of the MnBi intermetallic compound // J. Phys.: Condens. Matter. – 2002. – Vol.14. – P.6509-6519.

Shoenberg D., Uddin M.Z. The Magnetic Properties of Bismuth. I. Dependence of Susceptibility on Temperature and Addition of Other Elements // Proc. R. Soc. Lond. A. – 1936. – Vol.156. - P.687-701.

Focke A.B., Hill J.R. The Electrical Resistivity of Bismuth Single Crystals // Phys. Rev. – 1936. – Vol. 50. – P. 179-184.

Kaye G.W.C. The Thermal and Electrical Resistance of Bismuth Single Crystals The Effects of Temperature and Magnetic Fields // Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences. – 1939. - Vol. 170. – No.943. - P. 561-583.

Thompson N. The Electrical Resistance of Bismuth Alloys // Proc. R. Soc. Lond. A. – 1936. – Vol.155. – No.884. - P.111-123.

Jewett F.B. The Effect of High Temperatures on the Change of Resistance of Bismuth in a Magnetic Field // Phys. Rev. (Series I). – 1903. – Vol. 16. – No.1. - P. 51-59.

Kapitza P. The Study of the Specific Resistance of Bismuth Crystals and Its Change in Strong Magnetic Fields and Some Allied Problems // Proc. R. Soc. Lond. A. – 1928. – Vol.119. – No.782. - P.358-443.

Alers P.B., Qebber R.T. The Magnetoresistance of Bismuth Crystals at Low Temperatures // Phys. Rev. – 1953. – Vol. 91. – No.5. - P. 1060-1065.

Fal'kovskiĭ L.A. Physical properties of Bismuth // Sov. Phys. Usp. – 1968. - Vol. 11. – No.1. – P. 1-21.

Edel’man V.S. Properties of electrons in Bismuth // Sov. Phys. Usp. – 1977. – Vol. 20. - P. 819-835.

Bogod Yu.A., Eremenko E.E. Magnetoresistance of Bismuth in strong magnetic fields // JETP Letters. – 1966. – Vol.3. – No.4. – P.113-115.


Refbacks

  • There are currently no refbacks.


Copyright (c) 2017 A. V. Terekhov, A. L. Solovjov, A. I. Prokhvatilov, V. V. Meleshko, I. V. Zolochevskii, J. Cwik, A. Los, A. D. Shevchenko, O. M. Ivasishin, Z. D. Kovalyuk