Indranil, Bhaumik ; Ganesamoorthy, S. ; Bhatt, R. ; Karnal, A. K. ; Wadhawan, V. K. ; Gupta, P. K. ; Kitamura, K. ; Takekawa, S. ; Nakamura, M. (2008) The ferroelectric phase transition in lithium tantalate single crystals: a composition-dependence study Journal of Applied Physics, 103 (1). 014108-014108. ISSN 0021-8979
Full text not available from this repository.
Official URL: http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arn...
Related URL: http://dx.doi.org/10.1063/1.2828167
Abstract
The dielectric behavior of lithium tantalate (LT) single crystals has been investigated in the vicinity of the ferroelectric phase transition for nonstoichiometric and near-stoichiometric compositions. Fitting of the experimental data to a modified Curie-Weiss equation indicates the occurrence of a mildly relaxor-ferroelectric-like phase transition in congruent LT single crystals (with the Curie-Weiss exponent γ having a value 1.2, rather than the value unity for a regular ferroelectric). As the Li concentration of these crystals approaches the stoichiometric value, the phase transition gets sharper, indicative of an increasing amount of long-range ordering. The bulk concentration of cation vacancies has also been estimated.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| ID Code: | 83693 |
| Deposited On: | 22 Feb 2012 12:50 |
| Last Modified: | 22 Feb 2012 12:50 |
Repository Staff Only: item control page
