Cubic phase stabilization of Barium titanate nanorods by rapid quenching technique
| Autor: | Aswaghosh Loganathan, Victor Jaya Nesamony, Divinah Manoharan |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Analytical chemistry 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention symbols.namesake chemistry.chemical_compound Tetragonal crystal system Pulmonary surfactant law Phase (matter) General Materials Science Calcination Quenching Mechanical Engineering 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences chemistry Mechanics of Materials Barium titanate symbols Nanorod 0210 nano-technology Raman spectroscopy |
| Zdroj: | Materials Letters. 186:305-307 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2016.10.048 |
| Popis: | Stabilization of high temperature cubic phase of BaTiO3 at room temperature is established by rapid quenching of the surfactant assisted sonochemically synthesized BaTiO3 after calcination for 2 h at 800 °C. The quenched BaTiO3 is stabilized to cubic phase at room temperature in contrast to the BaTiO3 obtained by normal cooling at a rate of 1 °C/min, which exists in the tetragonal phase at room temperature. BaTiO3 prepared by the same synthetic procedure but two different heat treatment methods possesses almost similar morphology (i.e.) 1-dimensional nanorod structure but with different aspect ratio. Quenching prevents the low temperature phase transformation c→t from occurring by providing a narrow window of time in which the reaction is both thermodynamically favourable and kinetically accessible. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect