A MÖSSBAUER SPECTROSCOPY STUDY OF SUPERPARAMAGNETISM IN THE IRON-MERCURY SYSTEM S. Linderoth, S. Mørup, A. Meagher, S. Wells, J. van Wonterghem, H. K. Rasmussen and S. W. Charles J. Phys. Colloques, 49 C8 (1988) C8-1827-C8-1828 DOI: 10.1051/jphyscol:19888835