Analysis of infrared - visible - near - ultra violet reflectivity of conducting and superconducting oxides

Ricardo P.S.M. Lobo (1) , Christine Allancon (1) , Francisco J Gotor (1) , Jean-Marc. Bassat (1) , Jean-Pierre Loup (1) , Philippe Odier (1) , Krystoff Dembinski (1) , François Gervais (1) , Corinne Champeaux (2, 3) , Pascal Marchet (4, 2) , Alain Catherinot (5, 2)

1 CRMHT - Centre de recherches sur les matériaux à haute température
2 LMCTS - Laboratoire de Matériaux Céramiques et Traitements de Surface
3 IRCER-AXE2 - IRCER - Axe 2 : procédés plasmas et lasers
4 SPCTS-AXE3 - Axe 3 : organisation structurale multiéchelle des matériaux
5 Axe 2 : procédés de traitements de surface

We analyse infrared-visible-near-ultraviolet spectra of oxide materials in the semiconducting or metallic phase. We show that the response of laser-ablated YBa2Cu3O7 film can be fitted by a modified Drude term without mid-infrared absorptions. Mid-infrared and visible absorptions are discussed for textured YBaCuO, BaBiO3 and Pr2NiO4+δ as well as indication of their polaronic origin.

Domaines: Matériaux

Ricardo P.S.M. Lobo, Christine Allancon, Francisco J Gotor, Jean-Marc. Bassat, Jean-Pierre Loup, et al.. Analysis of infrared - visible - near - ultra violet reflectivity of conducting and superconducting oxides. Physica C: Superconductivity, 1994, 235-240, pp.1071-1072. ⟨10.1016/0921-4534(94)91760-4⟩. ⟨hal-02296065⟩