Synthesis of lanthanum titanate (La2Ti2O7) for high temperature sensor applications

Ansari, NI and Sivagnanapalani, P and Sureshkumar, V and Shivaraj, BW and Panda, PK (2021) Synthesis of lanthanum titanate (La2Ti2O7) for high temperature sensor applications. Journal of Materials Science: Materials in Electronics, 32 (23). pp. 27422-27428. ISSN 09574522

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Lanthanum titanate (La2Ti2O7) with perovskite-like layered structure is a candidate material for high temperature sensor application due to its high curie temperature (Tc = 1461 °C) and linearity of temperature vs. electrical resistance. La2Ti2O7 (LTO) was synthesized by solid state reaction using constituent powders at 1250 °C for 2 h. The LTO samples prepared in the form of circular pellets were sintered in temperature ranges (1350 to 1400 °C for 2 h). The sintered density was found highest at 1400 °C for LTO samples (> 97.24% Th.). Moreover, the sintered LTO samples were characterized for their ferroelectric properties as well as DC electrical resistivity (ρ) measured in the temperature range of 100 to 900 °C. The electrical resistivity was decreased from 1013 to 106 Ω cm linearly with the increase in temperature from 100 to 900 °C. Hence, LTO is a promising sensor material for high temperature applications.

Item Type: Article
Uncontrolled Keywords: Lanthanum titanate (La2Ti2O7), High temperature applications
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
CHEMISTRY AND MATERIALS > Metals and Metallic Materials
Depositing User: Mrs. Usha Kumari
Date Deposited: 18 May 2022 11:08
Last Modified: 18 May 2022 11:08

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