Center Fed Implanted Channel High Speed Bubble Detector for Contiguous Disk Devices
Original Publication Date: 1981-Oct-01
Included in the Prior Art Database: 2005-Feb-12
A detector for contiguous disk devices includes an integrated structure which has a two-way stretcher and an implanted channel. As shown in the drawing, the bubble 10 is propagated along major loop propagation track 12 through the narrow opening 14 into the ion-implanted channel 16. The width of the opening 14 is about the same width as the width of the channel 16. A magnetoresistive sensor 18 is positioned so that it overlaps the implanted channel 16 on the side opposite the narrow opening 14. A hairpin shaped conductor 20 is positioned around the channel 16 and the sensor 18 to provide a large field with a minimum current. Once the bubble is in the channel 16, it is stretched in two directions by the combination of magnetic fields from the edges of channel 16 and from the current in conductor 20.