Abstract
Magnetic neutron scattering experiments have been performed on a single crystal of Nd 2CuO 4 in the temperature range 1.5–300 K in order to investigate the magnetic moments of Cu 2+ and Nd 3+ and their respective roles in the magnetic structures observed below T N=260 K. Our results show that a magnetic moment is present on Nd 3+ in all three phases. The magnitude of this moment increases with decreasing temperature, whereas some Nd-Cu spin correlations change abruptly at the I–II and II–III phase transitions.
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