  A large conventional magnetocaloric effect at the second order magnetic
transition in cubic Ni2Mn1.4In0.6 Heusler alloy is reported. The isothermal
magnetization at 2K shows a huge ground state magnetic moment of about 6.17
{\mu}B/f.u. The theoretical calculations show that the origin of the large
magnetic moment in cubic Ni2Mn1.4In0.6 results from the strong ferromagnetic
interaction between Mn- Ni and Mn-Mn sublattices. The experimental magnetic
moment is in excellent agreement with the moment calculated from the theory.
The large magnetic moment gives rise to considerably high adiabatic temperature
and entropy changes at the magnetic transition. The present study opens up the
possibility to explore cubic Heusler alloys for magnetocaloric applications.
