Date/Time
Date(s) - 06/12/2006
3:30 pm - 4:30 pm

Title: NEW PARADIGMS IN MAGNETIC RECORDING: UNDERSTANDING THROUGH MICROMAGNETIC MODELING

Speaker: Dr. Martin Plumer

Institute: Department of Physics and Physical Oceanography, Memorial University

Location: ABB 102

Description:

The rapid growth in areal density which has driven the magnetic recording industry over the past 40 years is facing fundamental physical limitations. Superparamagnetism is largely responsible for the reduction in disc-drive warranty periods that has occurred in recent years. New types of recording systems are now being introduced which will provide the industry with temporary relief. Perpendicular recording systems along with Tunneling Magneto-Resistive sensors will ensure continued improvements in storage-based consumer electronics but at a much reduced rate. Evaluation of exotic ideas such as heat-assisted recording and bit-patterned media are ongoing. Fundamental to all these types of recording paradigms is magnetic interactions on a nanometer length scale. Computational micromagnetic modeling is a powerful tool that can be used to evaluate new technologies as well as provide guidance for production-ready designs. Several examples of how computational micromagnetics has led to improved bit resolution are presented.