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Modelling strain distributions in ion-implanted magnetic bubble materials

MacNeal, B. E. and Speriosu, V. S. (1981) Modelling strain distributions in ion-implanted magnetic bubble materials. Journal of Applied Physics, 52 (6). pp. 3935-3940. ISSN 0021-8979. http://resolver.caltech.edu/CaltechAUTHORS:MACjap81

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Abstract

The detailed properties of strain distributions in Ne+, B+, and He+ implanted magnetic bubble garnet materials are accounted for by calculating the nuclear energy loss as a function of depth. The calculation is based on stopped ion distributions for ZnS, with suitable corrections made for differences in material density. The constant of proportionality K between strain and nuclear energy loss, and the density ratio l are determined for each ion by comparing calculated strain distributions with experimental results obtained previously using an x-ray diffraction technique. It is found that K is roughly the same for all three ions, 0.016±0.003 (eV/Å3)^−1, and that the average value l = 0.79±0.08 is consistent with the actual density ratio l = 0.72. Good agreement is found in additional examples of both single and multiple implants (±10% relative error). Finally, a procedure for selecting the incident energies and dosages required to produce a uniformly strained layer for bubble device applications is described, and then demonstrated by achieving a 0.4-um-thick layer with (1.07±0.09)% strain, using a double B+ implant.


Item Type:Article
Additional Information:© 1981 American Institute of Physics. (Received 24 November 1980; accepted for publication 6 March 1981)
Subject Keywords:MAGNETIC MATERIALS, MAGNETIC BUBBLES, ION IMPLANTATION, MATHEMATICAL MODELS, STRAINS, SPATIAL DISTRIBUTION, NEON IONS, BORON IONS, HELIUM IONS, GARNETS, ZINC SULFIDES, ENERGY LOSSES, COMPARATIVE EVALUATIONS, THEORETICAL DATA, X−RAY DIFFRACTION
Record Number:CaltechAUTHORS:MACjap81
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:MACjap81
Alternative URL:http://dx.doi.org/10.1063/1.329198
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10208
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:16 Apr 2008
Last Modified:26 Dec 2012 09:58

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