Volnyanskaya, I.P. and Trubitsyn, M.P. and Volnyanskii, D.M. and Bondar, D.S. and Shvets, T.V. (2017) Dielectric properties of the pb2moo5 crystals irradiated with uv light. Вісник Дніпропетровського університету.Серія "Фізика.Радіоелектроніка" (24). pp. 79-83.
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DIELECTRIC PROPERTIES OF THE Pb2MoO5 CRYSTALS IRRADIATED.pdf Download (241kB) | Preview |
Abstract
The dielectric properties of the Pb2MoO5 crystals, exposed to UV light radiation (290 K), were studied. It was shown that UV irradiation led to appearance of permittivity maximum near 530 K (AC field frequency f=1 kHz). Heating up to 700 K resulted in thermal dissociation of the dipole complexes, induced by UV light irradiation and contributing to ε εε ε peak. The magnitude of the ε εε ε maximum increased with increasing time of UV light exposure and saturated for t>90 min. It is supposed that the observed anomaly of ε εε ε is determined by dielectric response of (MoO3)- complexes. These centers arise when photoelectrons are trapped by molybdenum ions with oxygen vacancy VO in the nearest surroundings.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | double lead molybdate crystal, dielectric permittivity, light induced defect. |
| Subjects: | Physics |
| Divisions: | Departments > Department of Medical and Biological Physics and Informatics |
| Depositing User: | Оксана Мажуга |
| Date Deposited: | 21 Nov 2019 09:35 |
| Last Modified: | 21 Nov 2019 09:35 |
| URI: | http://repo.dma.dp.ua/id/eprint/4556 |
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