Researchher Qutaiba Abdullhadi Al-Karam, physics student at the Arab American University Faculty of Graduate Studies, defended his master thesis titled “Resistance Spectrum, Structural Properties and Depending on Composite Ceramics Temperature”.
Researcher Qutaiba Abdullhadi Al-Karam Thesis Defense
In his thesis, he explored some of the bismuth zinc niobium oxide ceramic composed with lanthanum characteristics, due to its famous high insulation application. Lanthanum concentration was changed in the range x =0.10 – x =0.22. X-ray diffraction analysis showed that ceramics grow individually from 33 – 57 nm when lanthanum concentration increases from 0.10 – 0.20. Indicating that through the X-ray diffraction analysis showed in the thermal range 298 – 470 Kelvin that microwave stress, density of defect and fixed structure increases with temperature increasing while granular size decrease in the range 298 – 390 Kelvin.
At the end of discussion, the committee of main supervisor and Head of committee Dr. Adly Saleh, co-supervisor Dr. Hazem Khanfar, Arab American University internal examiner Prof. Dr. Atef Qasrawi and external examiner from An-Najah University Prof. Dr. Ghassan Safarini, decided to award Qutaiba Al-Karam a master degree.