Magnetization and dilute Fe-57 Mossbauer studies of YbMn2Si2-xGex at t
emperatures 4.2-650 K display multiple magnetic phase transitions. For
YbMn2Ge2, T-N = 495(5)K while at 430, 350 and 190 K, drastic changes
in canted spin structure antiferromagnetism occur. (C) 1998 Elsevier S
cience B.V. All rights reserved.