We have measured the microwave resistance of highly conducting perovskite oxide SrMoO3 thin film coplanar waveguides. The epitaxial SrMoO3 thin films were grown by pulsed laser deposition and showed low mosaicity and smooth surfaces with a root mean square roughness below 0.3 nm. Layer-by-layer growth could be achieved for film thicknesses up to 400 nm as monitored by reflection high-energy electron diffraction and confirmed by X-ray diffraction. We obtained a constant microwave resistivity of 29 μΩ·cm between 0.1 and 20 GHz by refining the frequency dependence of the transmission coefficients. Our result shows that SrMoO3 is a viable candidate as a highly conducting electrode material for all-oxide microwave electronic devices.

Submicrometre powders of single-phase Li Mn,O, have been synthesized from citrate and oxalate precursors using a xerogel method. The product was confirmed by XRD studies and the temperatures of formation were shown to be <250 "C by TG and DTA. SEM studies showed that the average grain size of the powders was <0.1 pm. The reversible lithium insertion behaviour of the product was demonstrated in a coin cell assembly using 1 mol I-' LiCIO, in a 1 :1 mixture of ethylene carbonate (EC) and 1,2-dimethoxyethane (DME). The capacity of the cathode remained as high as 120 mA h g-' at the end of the fortieth cycle.

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