Magnetic bubble-domain detection: Review and outlook

This paper reviews the early work on the detection of magnetic bubble domains, as well as summarizing and comparing the most recent results. Topics include InSb sensors, Permalloy sensors (thick-film as well as thin-film), and bubble stretching techniques. The limitations on sensor input power imposed by heat dissipation and other factors are discussed. The relationship between bubble size and sense signal is then examined. Finally, projections are made for the detection of submicron bubble domains.