Bibliographic Details
| Title: |
Pyroelectric and Ferroelectric Study of Polarisation Reversal in Near-Stoichiometric LiTaO3. |
| Authors: |
Bravina, Svetlana L.1, Morozovsky, Nicholas V.1, Hum, David S.2, Route, Roger K.2, Fejer, Martin M.2 |
| Source: |
Ferroelectrics. 2010, Vol. 400 Issue 1, p185-194. 10p. |
| Subjects: |
Pyroelectricity, Ferroelectricity, Polarization (Electricity), Stoichiometry, Lithium tantalate, Water vapor transport, Pyroelectric detectors |
| Abstract: |
Polarization reversal ferroelectric characteristics (charge-, current- capacitance- and pyroresponse- voltage loops) were investigated for vapor transport equilibrated near-stoichiometric LiTaO3. The transition from the unipolar state to asymmetric and symmetric inversely polarized structures (IPS) was realized by applying external voltage. By photopyroelectric subsurface thermal-wave probing of IPS the position of charged domain boundary and its thickness were estimated. Low (60 V/mm) coercive field process was considered as connected with low (4 μC/cm2) polarization reversal in gradient regions of domain boundaries. Application of monolithitic IPS for various types of differential pyroelectric detectors is proposed. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
