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We conducted the temperature (T) and magnetic field (H) dependence of resistivity (ρ) on Ni44Co2Mn43In11 compound under the magnetic field (H=) 0-70 kOe in the temperature range T=150-380 K. Several novel anomalies are observed in the ρ(T,H) behaviour of this compound which upto our knowledge were not reported earlier in these systems. An unusual change in ρ(T) associated with a positive manetoresistance (MR) is also observed just above the martensite transformation (MT) in the temperature range of T=308-320 K. In addition, an anomalous field dependence of the MR is observed in temperature region T=305-310 K, where ρ increases with H after reaching minimum. Furthermore, a large MR up to -65 % is observed across its room temperature MT which can be beneficial for practical applications. The possible origin of the observed MR behaviour is discussed in terms enhanced magnetic scattering

Anomalous magnetoresistive behavior in Ni44Co2Mn43In11 alloy