Abstract
We report on sharp spin-valve-like magnetoresistance (MR) below ferromagnetic order (TC), which has not been discussed in the pristine as well as doped crystals. In addition, typical manifestation of exchange bias (EB) effect is also observed by systematic shifts of the loop observed in MR driven by the cooling field. The EB effect appears below a characteristic temperature (TA), below which ferromagnetic and antiferromagnetic phases have been suggested to coexist. As a result of In doping, the sharp spin-valve-like evidence and EB effect over a wide temperature range, which are observed even at much higher temperatures than the liquid nitrogen temperature, suggest the system as a potential candidate for application in topological spintronics.
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