Pressure Effects on the Antiferromagnetic Ordering in Pr₂CuO_4−y

抄録

Neutron diffraction experiments have been carried out to study the effects of pressure on the antiferromagnetism in Pr₂CuO_4−y. The intensity of magnetic scattering is sensitively affected by pressure. This result is interpreted as the changes in the spin orientations induced under high pressure. In contrast, the three-dimensional (3D) ordering temperature T_N is little dependent on pressure. The absence of the pressure effect on T_N indicates a marked contrast to the large effect on T_N in La₂CuO_4−y.