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Effect of Ion Implantation on the Minimum Bubble Drive Field in Magnetic Garnet Films

IP.com Disclosure Number: IPCOM000087783D
Original Publication Date: 1977-Mar-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Brown, B: AUTHOR [+3]

Abstract

The minimum bubble drive field (Delta H(z, min)) in ion-implanted 5 Micron magnetic garnet films depends strongly on the implantation conditions, such as the implantation energy and dosage.

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Effect of Ion Implantation on the Minimum Bubble Drive Field in Magnetic Garnet Films

The minimum bubble drive field (Delta H(z, min)) in ion-implanted 5 Micron magnetic garnet films depends strongly on the implantation conditions, such as the implantation energy and dosage.

The Delta H(z, min) decreases monotonically up to at least 200 KeV with increasing implantation energy and dosage adjusted so that damage level remains constant. Varying the dosage, while keeping the implantation energy constant, leads to a pronounced minimum in Delta H(z, min) Reductions of the Delta H(z, min) by as much as 43% from that of the as-grown films have been achieved by using proper ion implantations.

The Delta H(z, min) in an ion-implanted film is found also to be dependent on the applied in-plane field H(ip). With increasing H(ip), the minimum drive field increases until finally the as-grown value is reached. This behavior, as well as the dependence of Delta H(z, min) on the different ion implantations, can be explained qualitatively by a model, assuming a capping layer somewhat buried in the garnet film.

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