Abstract
In the layered structure of delafossite-type metal oxides AMO(2), the M position can be occupied by a wide spectrum of trivalent or couples of divalent/tetravalent cations. In the A position, however, only monovalent, linearly coordinated cations are accommodated. This study focuses on CuRh1-xCoxO2 (0 <= x <= 0.05) polycrystalline samples which are prepared by solid-state reaction method. Magnetic susceptibility measurements of all samples were done in a temperature range 2-250 K. The interaction of the M cations with each other through M-O-M linkages of approximately 180 degrees is expected to be the dominant consideration, and this would be paramagnetic in nature. The composition-dependent Raman spectra of CuRh1-xCoxO2 displayed three intense modes (670 cm(-1), 490 cm(-1), and 204 cm(-1)) at room temperature, which matched with other delafossite structures.