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| Titel: |
Dielectric and thermal expansion properties of LHPG grown potassium lithium niobate single crystals |
| Auteur: |
Amin, S. A. Guo, R. Bhalla, A. S. |
| Verschenen in: |
Ferroelectrics letters section |
| Paginering: | Jaargang 25 (1999) nr. 1-2 pagina's 37-44 |
| Jaar: |
1999-04-01 |
| Inhoud: |
Compositions of potassium lithium niobate K6Li4+xNb10O30 (x for excess mole % of Li2O) with tetragonal tungsten bronze structure were prepared as crystal fibers by the Laser Heated Pedestal Growth technique. The lattice constants of KLN were measured by using X-ray diffraction and typical values for a = 12.5703 ± 0.0018 and c = 3.9485 ± 0.0012 were measured. This paper reports the dielectric permittivity measurements on single crystal along the a- and c- axis in the temperature range of 90-450K and frequency range of 102-105 Hz. The dielectric permittivity at room temperature along a- and c- axis was 430 and 330 respectively. Mechanism for the low temperature dielectric relaxation will be discussed. Thermal expansion behavier in the a- and the c-direction will also be reported. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 28 van 127 gevonden artikelen
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