Magnetic properties of Y(Co1-xMnx)(2) compounds are studied by NMR and
magnetic measurements at 4.2 K. The saturation magnetizations have a
maximum value around x = 0.25 for Y(Co1-xMnx)(2). The NMR spectra were
observed at 4.2 K in zero external field, which shows that Mn has a l
arge magnetic moment and the ferromagnetic and antiferromagnetic arran
gements of the Mn moments exist. (C) 1998 Elsevier Science B.V. All ri
ghts reserved.