TY - JOUR
T1 - Cubic phase stabilization of Barium titanate nanorods by rapid quenching technique
AU - Loganathan, Aswaghosh
AU - Manoharan, Divinah
AU - Nesamony, Victor Jaya
PY - 2017/1/1
Y1 - 2017/1/1
N2 - 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.
AB - 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.
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U2 - 10.1016/j.matlet.2016.10.048
DO - 10.1016/j.matlet.2016.10.048
M3 - Article
AN - SCOPUS:84991615339
VL - 186
SP - 305
EP - 307
JO - Materials Letters
JF - Materials Letters
SN - 0167-577X
ER -