  We report on the observation of temperature and field dependent anomalous
Nernst effect (ANE) in Ni-rich bulk Ni-Co-Mn-Sn full Heusler alloy. A large
change in the transverse Nernst coefficient (N) is obtained across the first
order magnetostructural transition from a tetragonal martensite to a cubic
austenite phase. The saturation of ANE and magnetic data appear to depend
largely on the magnetic anisotropy of the device. Such change in the Nernst
co-efficient may prove to be useful for switching applications controlled by
temperature and magnetic field changes.
