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Magnetic, magnetocaloric and exchange bias properties have beensystematically investigated in Ni46Co4Mn38Sb12 ribbon by applying magneticfield along (IP) and perpendicular (OP) to the ribbon plane. From thethermo-magnetization curves, the sharpness of the martensitic transition isobserved to be nearly the same for both IP and OP ribbons. The thermomagneticirreversibility region is found to be larger in the OP ribbon at 500 Oe,indicating that the magnetic anisotropy is larger in this case. The OP ribbonshows the Hopkinson maximum at 500 Oe, both for the FCC and ZFC modes. Themagnetization curve for IP ribbon shows a faster approach to saturation,compared to the OP ribbon. Isothermal magnetic entropy change at 50 kOe hasbeen found to be nearly same for both the ribbons. At 5 K the coercivity andexchange bias values are larger for the OP ribbon. Crystallographic texturingof the ribbons and its effect in the easy magnetization direction are found tobe the reason behind the differences between the two ribbons.

In-plane and out of plane magnetic properties in Ni46Co4Mn38Sb12 Heusler alloys ribbons