Spin-glass–like ground state and observation of exchange bias in Mn0.8Fe0.2NiGe alloy P. Dutta, S. Pramanick, D. Venkateshwarlu, V. Ganesan, S. Majumdar, D. Das and S. Chatterjee EPL, 108 1 (2014) 17012 Published online: 08 October 2014 DOI: 10.1209/0295-5075/108/17012