The magnetic properties of Nd0.35La0.65Mn2Si2 in the temperature range 150-
440 K and pressure range 0-1.5 GPa are reported. The temperature dependence
of AC magnetic susceptibility shows changes from antiferro- through, ferro
- and, antiferro- to paramagnetic phases. The external pressure causes a de
crease of the ferromagnetic phase. The magnetic (p, T) phase diagram has al
so been determined. (C) 1999 Elsevier Science B.V. All rights reserved.