Magnetic and gas-sensing properties of Cr2-x Tix O3: ESR, XRD and XANES studies

DANIELA P. VALDÉS; LILIANA MOGNI; DINA TOBIA; SANTIAGO J.A. FIGUEROA; RODOLFO D. SÁNCHEZ; MARTÍN E. SALETA

San Carlos de Bariloche

Simposio; XXIII Latin American Symposium on Solid State Physics (SLAFES XXIII); 2018

Organizing Committee

The detection of gases and volatile organic compounds (VOCs) that are harmful to humans, animals and the environment is an area of material science in constant development and a great research effort is being made to obtain sensitive materials. Several types of materials transform the variation of their physico-chemical properties, in the presence of gases/VOCs, into a measurable signal. Metal oxide semiconductors are potential chemical sensors, which have become mass-use for their large field of application, their small size and their simple manufacturing. In addition, they have a high sensitivity (detect very low concentrations), operate in a wide temperature range and possess long durability. The system Cr2−x Tix O3 is a solid solution with corundum structure (0.01< x