BUKU ABSTRAK - Universiti Putra Malaysia

Effects of MgO on Dielectric Properties and Electrical Conductivity of Ternary
Zinc Magnesium Phosphate Glasses
Assoc. Prof. Dr. Zainal Abidin Talib
Khor Shing Fhan, W. Mohd. Daud W. Yusoff and Sidek Ab. Aziz
Faculty of Science, University Putra Malaysia,
43400 UPM Serdang, Selangor, Malaysia.
+603-8946 6606; zainalat@science.upm.edu.my
Keywords: Conductivity, dielectric properties, relaxation, phosphates, short-range order
A Study on Designing Optimal Layout by Metaheuristic Approaches for Optimising
Planting Areas
Dr. Abu Bakar Md. Sultan
Ismadi Md Badarudin, Md. Nasir Sulaiman, Ali Mamat and Mahmud Tengku Muda Mohamed
Faculty of Computer Science and Information Technology, University Putra Malaysia,
43400 UPM Serdang, Selangor, Malaysia.
+603-8946 6525; abakar@fsktm.upm.edu.my
Keywords: Exact method, lining, metaheuristic, optimisation, space allocation
209
Science, Technology & Engineering
Phosphate glasses have several advantages over conventional silicate and borate glasses due to their superior
physical properties and structural versatility to accept several cation and/or anion exchanges. These features allow
the reengineering of glass formulation, which leads to advances in their physical properties and optimising of
processing parameters. BeO - P2O5, MgO - P2O5, and ZnO - P2O5 glasses as are classified as anomalous glass
because they exhibits unusual behaviour in the evolution of their physical properties (mass density, refraction
index) at the metaphosphate composition. Not many literatures can be found discussing the dielectric properties
in detail for the binary MgO - P2O5, and ZnO - P2O5 glasses. In addition, it is of interest to investigate the
physical, refractive and dielectric properties of the simultaneous admixture of MgO and ZnO into the phosphate
compositions. To investigate the transition of these properties into the ultraphosphate composition, a series of
ternary glasses with O/P