Technology for Detecting Small Magnetic Domains and Beam Addressed Memory Therewith
Original Publication Date: 1978-Mar-01
Included in the Prior Art Database: 2005-Feb-20
Spin-polarization of secondary electrons is used to detect and determine the magnetic polarization of a surface in a very small beam-selected area. Spin-polarized electron emission from magnetic materials allows small magnetic domains, such as magnetic "bubbles", to be imaged and detected. Resolution of the system is limited by the diameter of the focused electron beam, which is typically several hundred angstroms.