Abstract
The YCuO2 and LaCuO2 delafossites consist of alternating triangular planes of Ln3+ octahedra and O-Cu1+-O sticks. Here it is shown that under a limited set of conditions they may be oxidized to form new delafossite-derived phases YCuO2.5+x, 0 ≤ x ≤ 0.05, and LaCuO25+x, 0.07 ≤ x ≤ 0.18. Electron microscopy and powder X-ray diffraction are employed to characterize the resulting structures. Temperature-dependent resistivities and magnetic susceptibilities are reported. Characterization by soft X-ray photoabsorbtion spectroscopy, which shows them to be electronically unlike cuprates such as La2-xSrxCuO4, is also reported.
Original language | English |
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Pages (from-to) | 437-452 |
Number of pages | 16 |
Journal | Journal of Solid State Chemistry |
Volume | 104 |
Issue number | 2 |
DOIs | |
State | Published - Jun 1993 |