New magneto-optic memory concept based on compensation wall domains

Abstract
A new concept of thermomagnetic localized reversible magneto‐optic storage is proposed based on the application of compensation wall domains (CWD). Individual CWD's of 12 × 12‐μm dimensions in an LPE film of composition Y2.34Gd0.52Yb0.14Fe3.74Ga1.26 O12 with 3‐μm thickness have been switched by laser flashes of 10−2 erg/μm2 energy in 5 μs at 5145‐Å wavelength using a stationary field of 41 Oe normal to the film plane.