The YCuO 2 and LaCuO 2 delafossites consist of alternating triangular planes of Ln 3+ octahedra and O-Cu 1+ -O sticks. Here it is shown that under a limited set of conditions they may be oxidized to form new delafossite-derived phases YCuO 2.5+x , 0 ≤ x ≤ 0.05, and LaCuO 25+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 La 2-x Sr x CuO 4 , is also reported.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry