The structural and magnetic properties of YMn2D1.15 have been investigated
by temperature-dependent neutron diffraction. Magnetic and deuterium orders
appear at T-c = 217 K. The D atom contribution was cancelled by preparing
YMn2(H0.64D0.36)(1.15) to study the magnetic ordering and to fully solve th
e low-temperature structure. (C) 2000 Elsevier Science B.V. All rights rese
rved.