Vl. Sobolev et al., SPIN-REORIENTATION PHASE-TRANSITION IN ND2CUO4 IN AN EXTERNAL MAGNETIC-FIELD - UNUSUAL MANIFESTATIONS OF MAGNETOELASTIC COUPLING, Physical review. B, Condensed matter, 48(5), 1993, pp. 3417-3422
The behavior of the magnetic structure of the copper subsystem of Nd2C
uO4 under the action of an external magnetic field has been studied. I
t is shown that the spin-reorientation phase transition takes place wh
en the external magnetic field is normal to the tetragonal crystal axi
s. This transition is accompanied by unusual anomalies of elastic prop
erties. The field dependence of the elastic moduli in the vicinity of
the critical point is investigated.