The Effect of Mechanical Stress and Structural Defects on the Hysteresis Properties of Ferromagnetic Films of Nano Scale Thickness: Simulation of the Crucial Factors to Enhance the Capacity of Hard Disk Drives.
1 To conduct a fundamental research which can be used to prepare a basic need (in research) for the project manager (who is a new lecturer) to propose an advance research in the future, to enhance the project manager's research potential by working with his mentor who is the expert in the field, to develop the project manager's educational career path in both teaching and researching, and to enhance the research system of the country by improving the quality of the new lecturer himself.
2 To publish the research works at least 2 papers with high standard international publishers.
3 To study and develop the use of spin models (Ising and anisotropic classical Heisenberg model) to determine the magnetic profiles in metallic thin-films at nanometer scale (thickness ranging from a monolayer up to 20 layers). These multilayer systems are found to be eminently tunable with respect to parameters such as the coercivity (HC) and the saturated magnetization (MS), whereas the granular-shape magnetic micro-structure system is not.
4 To design, code and obtain efficient algorithms that can be used extract the magnetic hysteresis information out of the model using Monte Carlo simulation which has been proved to be a handy tool to study statistical physics problems.
5 To develop general sophisticated theories to extend the results obtained from finite size and time limited simulations of the real system i.e. infinite lattice size along the in-plane direction.
6 To understand the magnetic behavior in terms of magnetization reversal as a function of time in the perpendicular direction and to find how the hysteresis properties depend on the temperature, the thickness, the anisotropy constants, the dipolar interaction, the frequency of the external field and the amplitude of the external field. This will roughly give a clue as to what material should be used in the perpendicular recording.
7 To build a firm bridge linking experiments and theories by using interaction constants extracted from `first principles' electronic structure calculations. This allows the simulations to mimic real systems as the required parameters are truly extracted from the electron wave functions. From the results, with proper units, we can confirm the validity of the theories to experiments (real material).
8 To create theories which can be used to predict and search for the suitable material to be used in the hard disk drives industry.
