Dipole defects in BeO |
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| Institution: | 1. The Research Institute of Natural Science and Department of Physics, Gyeongsang National University, Jinju 660-701, Republic of Korea;2. Health Physics Team, Korea Atomic Energy Research Institute, P.O. Box 105, Yuseong, Daejeon 305-600, Republic of Korea;1. Physics Department, Oklahoma State University, Stillwater, OK 74078, USA;2. Departamento de Física, FFCLRP-Universidade de São Paulo, 14040-901 Ribeirão Preto-SP, Brazil;3. Mersin University Science and Letter Faculty Physics Department 33343 Mersin, Turkey;4. R&D Pigments, Ferro Corporation, 251 W. Wylie Ave, Washington, PA 15301, USA;1. Universidade Federal de Sergipe, Departamento de Física, Av. Marechal Rondon, s/n, 49100-00, São Cristóvão, SE, Brazil;2. Instituto de Pesquisas Energéticas e Nucleares, Comissão Nacional de Energia Nuclear, IPEN/CNEN-SP, Av. Prof. Lineu Prestes 2242, 05508-000, São Paulo, SP, Brazil;1. Kahramanmaras Istiklal University, Elbistan Vocational High School of Health Service, Elbistan, Kahramanmaras, Turkey;2. Cukurova University, Physics Department, Balcal?, Sar?çam 01330, Adana, Turkey;3. Mersin University, Art Sciences Faculty, Physics Department, Mersin, Turkey |
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| Abstract: | Thermally Stimulated Depolarization Currents (TSDC) technique was applied to study the effects of thermal treatments and gamma irradiation in the formation, aggregation and destruction processes of dipole defects in beryllium oxide (BeO). In this work, a TSDC dipole peak was observed at 350 K that was assigned to impurity-vacancy complexes. The TSDC peak presents a linear dependence with the Polarization Voltage (VP), typical behaviour of defects with dipole origin. Thermal treatments of 1 h were performed between 400 and 900 °C and a decay in the peak intensity was observed. After the gamma irradiation of the thermal treated samples a restoration tendency of the TSDC peak was observed. |
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| Keywords: | Thermally Stimulated Depolarization Currents (TSDC) BeO Dipole defects |
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