Infrared spectroscopic study of LiCoO2 thin films

K. J. Rao (1, 2) , Hanane Benqlilou-Moudden (1) , Bernard Desbat (3) , Philippe Vinatier (3) , Alain Levasseur (1)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
2 SSCU - Solid State and Structural Chemistry Unit
3 CPMOH - Centre de physique moléculaire optique et hertzienne

Site disorder of Co3+ ions in sputtered films of lithium cobaltite has been examined using infrared spectroscopy. Both transmission and reflectance modes have been used to characterize the nature of IR absorption. It is found that Co3+ in the sputtered films occupy two types of octahedral sites that differ in the nature of second-neighbor environment. Li+ ions exhibit two bands, which may arise from tetrahedral and octahedral site occupancies or from the presence of disordered regions in the films.

Mots clés: Thin films; Infrared spectroscopy; Lithium; Cobalt; Oxides

Domaines: Matériaux

K. J. Rao, Hanane Benqlilou-Moudden, Bernard Desbat, Philippe Vinatier, Alain Levasseur. Infrared spectroscopic study of LiCoO2 thin films. Journal of Solid State Chemistry, 2002, 165 (1), pp.42-47. ⟨10.1006/jssc.2001.9487⟩. ⟨hal-00713861⟩