Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1591315 | Solid State Communications | 2015 | 5 Pages |
Abstract
The crystallization in a transparent precursor of a perovskite ferroelectric film deposited on an absorbing platinized silicon substrate initiated by multipulse femtosecond sharply focused laser beam of near-infrared spectral range is studied by transmission electron microscopy. Time dependences of the shapes of crystallized areas point to initiation of explosive crystallization with a seed on the opposite side of a heat source localized in a platinum interface layer. The radius of the crystalized semispheres varies from 150 to 900Â nm, with maximal crystallization velocity up to 1.2Â cm/s. Reverse direction of the spherical wave front propagation regarding to a heat source is explained in terms of the developed model based on thermal stress-induced modification of the activation energy.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Ð.S. Elshin, I.P. Pronin, O.M. Zhigalinа, M.Yu. Presniakov, D.N. Khmelenin, E.D. Mishina, V.I. Emel'yanov,