Synthesis and microstructural TEM investigation of CaCu sub(3Ru) sub(4)O sub(12 ceramic and thin film)

CaCu sub(3Ru) sub(4)O sub(12 (CCRO) is a conductive oxide having the same structure as CaCu) sub(3)Ti sub(4O) sub(1)2 (CCTO) and close lattice parameters. The later compound is strongly considered for high density parallel plates capacitors application due to its so-called colossal dielectric constant. The need for an electrode inducing CCTO epitaxial growth with a clean and sharp interface is therefore necessary, and CCRO is a good potential candidate. In this paper, the synthesis of monophasic CCRO ceramic is reported, as well as pulsed laser deposition of CCRO thin film onto (001) NdCaAlO sub(4 substrate. Structural and physical properties of bulk CCRO were studied by transmission electron microscopy and electron spin resonance. CCRO films and ceramic exhibited a metallic behavior down to low temperature. CCRO films were (001) oriented and promoted a CCTO film growth with the same orientation.)