Lanthanum-Gallium Tantalate Crystals and their Electrophysical Characterization
| Authors | A.P. Kozlova, N.S. Kozlova, I.M. Anfimov, D.A. Kiselev , A.S. Bykov |
| Affiliations | National University of Science and Technology "MISiS", 4, Leninskiy Pr., 119049 Moscow, Russia |
| Е-mail | anna_kozlova_2009@mail.ru |
| Issue | Volume 6, Year 2014, Number 3 |
| Dates | Received 19 May 2014; published online 15 July 2014 |
| Citation | A.P. Kozlova, N.S. Kozlova, I.M. Anfimov, et al., J. Nano- Electron. Phys. 6 No 3, 03034 (2014) |
| DOI | |
| PACS Number(s) | 82.45.Fk, 82.45.Gj, 82.45.Un |
| Keywords | Langatate, Polar dielectric crystal, Impedance (12) , Short circuit current (2) . |
| Annotation | Lanthanum-gallium tantalate single crystal (La3Ta0.5Ga5.5O14, langatate, LGT) is a perspective piezoelectric material as an active component of pressure sensors. An investigation of the growth conditions influence (the growth atmosphere) on the electrophysical сharacterization of LGT, obtained in different atmospheres (Ar, Ar + O2) was carried out. The frequency dependences of the relative dielectric constant (ε11/ε0) and of the admittance depend on the growth atmosphere. The langatate electrophysical сharacterization in alternating electric fields were analyzed by means of the impedance spectroscopy method. The behavior of short circuit currents in specimens of polar cuts of LGT single crystals with the same material electrodes without preliminary polarization is described. |
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