1. M. N. Mikheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences,Ekaterinburg,Russia,620108
2. Chaitanya Bharathi Institute of Technology,Department of Physics,Hyderabad,India,500 075
3. National Institute for Materials Science,Research Centre for Magnetic and Spintronic Materials,Tsukuba, Ibaraki,Japan,305 0047
4. UGC-DAE Consortium for Scientific Research,Mumbai Center,Mumbai,India,400085
5. Indian Institute of Technology Bombay,Magnetic Materials Laboratory,Department of Physics,Mumbai,India,400 076