Structure Analysis of Gd 2 CuO 4 : a New Modification of the T ' Phase
- 10 March 1994
- journal article
- Published by IOP Publishing in Europhysics Letters
- Vol. 25 (8) , 625-630
- https://doi.org/10.1209/0295-5075/25/8/011
Abstract
Neutron diffraction on a single crystal of Gd2CuO4 shows a long-range superstructure of the T' phase. The oxygen squares surrounding the Cu sites are rotated around the c-axis (by an angle of 5.2° at room temperature) leading to a reduced orthorhombic symmetry (space group: Acam). The reported structural deformation can explain previous results (weak ferromagnetism and Mössbauer effect) and might help to explain the non-existence of superconductivity in Gd2−xCexCuO4.Keywords
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