2015415 ensp 0183 ensp1 Effect of ball milling and post annealing on structural and magnetic properties in Ni 50 Mn 36 Fe 2 Sb 12 Heusler alloy Roshnee Sahoo1 4 K G Suresh1 A K Nigam2 X Chen3 and R V Ramanujan3 1Department of Physics Indian Institute of Technology Bombay Mumbai 400076 India 2Tata Institute of Fundamental Research Mumbai 400005 India 3School of Materials Science and Engineering