Gg. Artemev et al., NEW MECHANISM OF THE SPIN-REORIENTATION PHASE-TRANSITION IN NEODYMIUMORTHOCHROMITE, Journal of magnetism and magnetic materials, 140, 1995, pp. 2157-2158
Using magnetization and magnetostriction measurements we have investig
ated various field-induced and spontaneous spin-reorientation phase tr
ansitions (SRPT) in pure NdCrO3 and Nd1-xEuxCrO3 (x = 0, 0.3, 0.5, 0.9
) single crystals. Analysis of these data gives evidence that spontane
ous Morin type Gamma(2)(G(2)F(x))-Gamma(1)(G(y)) SRPT in Nd1-xEuxCrO3
is determined by a competition between two contributions (Zeeman-like
and Van Vleck) in the be-plane anisotropy energy resulting from an ani
sotropic Nd-Cr exchange.