Magnetoresistance properties of magnetic Ni-Mn-Sn-B shape memory ribbons and magnetic field sensor aspects operating at room temperature


Kirat G. , KIZILASLAN O. , AKSAN M. A.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, cilt.477, ss.366-371, 2019 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 477
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1016/j.jmmm.2019.01.071
  • Dergi Adı: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
  • Sayfa Sayıları: ss.366-371

Özet

In this study, the magnetotransport properties of the Ni48.95Mn37.74Sn13.32B3 ribbons prepared by melt-spinning technique were investigated in details. The martensitic-austenite phase transition was obtained between 280 K and 285 K which are near the room temperature. From rho-H measurements, it was found that an anomalous Hall effect at 281, 283 and 285 K between M-s (martensite start temperature) and M-f (martensite finish temperature) temperatures is domianant mechanism. It was seen that a voltage variation of 5 mu V (between 0 and 10 kOe) at a constant current of 1 mA is one of the best values found for the Heusler alloys. The rho-H results revealed that the ribbons showed the magnetic field-induced one-way shape memory effect (SME). High voltage change caused by magnetoresistance was reached at a constant current of 100 mA at 298 K. The results suggest that the Ni-Mn-Sn-B ribbon is a potential candidate to prepare a magnetic field sensor operating at the room temperature.