Thermistor formation using batio3 powders synthesised by the pechini method

Barium titanate (BaTiO3) is a compound of interest in the field of electroceramics which is widely used in the manufacture of capacitors, piezoelectric transducers and resistive devices having a positive temperature coefficient (PTCR) and in manu- facturing pyroelectric and optoelectronic devices. Most of these devices are obtained by consolidating high purity, suitable sized particle ceramic powders; structured synthesis methods are required to ensure such requirements. BaTiO3 powders were synthesised by a polymeric precursor method (Pechini) in this work. Very pure, small particle sized, raw material was obtained. These powders were characterised using thermo- gravimetric and differential thermal analysis (TGDT), X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The results indicated that samples treated at 650°C presented cubic BaTiO3 as unique crystalline phase. If a sample were treated at 1,100°C, the tetragonal phase having a c/a

• Autores: Fernández Perdomo, Claudia P.; Rodríguez Páez, Jorge E.
• Tipo de recurso: Article of journal
• Fecha de publicación: 2010
• Institución: Universidad Nacional de Colombia
• Repositorio: Universidad Nacional de Colombia
• Idioma: spa
• OAI Identifier: oai:repositorio.unal.edu.co:unal/29661
• Acceso en línea: https://repositorio.unal.edu.co/handle/unal/29661; http://bdigital.unal.edu.co/19709/; http://bdigital.unal.edu.co/19709/2/; http://bdigital.unal.edu.co/19709/3/
• Palabra clave: BaTiO3; caracterización eléctrica; Pechini; síntesis; termistor; BaTiO3; electrical characterisation; Pechini; synthe- sis; thermistor
• Rights: openAccess
• License: Atribución-NoComercial 4.0 Internacional