ChemInform Abstract: Magnetic Order and Crystal Chemistry of Nd2-xCexCuO4-δ
Abstract
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ChemInform Abstract
(0 ≤ x ≤ 0.15). - High-intensity powder neutron diffraction shows that the long-range antiferromagnetic order of the Cu sublattice persists to higher dopant levels in the title system compared to the effect of hole doping in the La2-xSrxCuO4-δ phases. This is qualitatively explained in terms of the contrast between dilution due to nonmagnetic Cu(I) states and frustration due to holes on either the oxygen or copper sublattices. Symmetry analysis of the magnetic structure reveals the possible importance of coupling between the Nd and Cu sublattices, which is reflected in the spin direction of Nd3+, the high Neel temp. (2 K), and a polarization- induced moment above TN.
