Structure and conductivity of B-site substituted (Li,La)TiO3

✍ Scribed by S. Stramare; W. Weppner

• Book ID: 103843118
• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 171 KB
• Volume: 113
• Category: Article
• ISSN: 0921-5107
• DOI: 10.1016/j.mseb.2004.07.003

✦ Synopsis

The crystal structure and the ionic and partial electronic conductivity of the Li x La y M z Ti 1-z O 3 (M = Ni, V, Cu, 0.25< x/y <1.44 and z = 0.05, 0.1, 0.2) and of the Li x La y Co z Ti 1-z O 3 (0.19 ≤ x ≤ 0.55; 0.55 ≤ y ≤ 0.8 and z = 0.05, 0.10, 0.30) systems, with perovskite-related structure, have been studied. Partial substitution (5, 10 and 30%) of Ti 4+ ions by slightly larger Co 2+ and Ni 2+ ions was found to stabilise the cubic perovskite structure (S.G. Pm3m; Co, a = 3.88450(6) Å and Ni, a = 3.8849(1) Å), with one exception (Li 0.19 La 0.67 Co 0.1 Ti 0.9 O 3 ) giving a tetragonal symmetry plus supercell reflections.