Synthesis of lanthanum titanate (La2Ti2O7) for high temperature sensor applications
| Autor: | P. Sivagnanapalani, Naveed Iqbal Ansari, V. Sureshkumar, B. W. Shivaraj, Prasanta Kumar Panda |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Lanthanum titanate Pellets Linearity Atmospheric temperature range Condensed Matter Physics Ferroelectricity Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Electrical resistance and conductance Electrical resistivity and conductivity Curie temperature Electrical and Electronic Engineering Composite material |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 32:27422-27428 |
| ISSN: | 1573-482X 0957-4522 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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