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Research Paper | Chemistry | India | Volume 2 Issue 7, July 2013 | Rating: 6.6 / 10
A Novel Nano Structured LaCaxCr1-xO3-δ for Humidity Sensors
B. Avila Josephine, V. Jeseentharani, V. Mary Teresita, S. Arul Antony
Abstract: Nano structured LaCaxCr1-xO3- have been synthesized by a novel sol-gel method, in different mole ratios with x=0, 0.2, 0.4, 0.6, 0.8 and 1.0 and characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM) EDX and FTIR were employed to study the structural phases. The compounds were sintered at 700C for 6 hrs and were subjected to DC resistance measurements at RH 5-98 % and temperature dependent studies. The change in surface conductivity as a function of applied field was measured using picoammeter (Keithely-6485). Response and recovery times were measured.
Keywords: Chromites, Perovskite, Ceramic oxides, Humidity sensor, semiconductors
Edition: Volume 2 Issue 7, July 2013,
Pages: 157 - 162