Magnetically permeable adhesives and adhesive-joined shield structures

W. J. DeBonte, A. D. Butherus

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The formulation of magnetically permeable adhesives (MPA's) and their use to join multisection magnetic shields are examined with application to shielding for magnetic bubble memory packages. MPA's offer a joining technique which reduces package size and avoids the degradation of shielding which occurs in assembling annealed shield cans by welding. It is shown that MPA's with permeability µ up to 10 with more than adequate mechanical strength can be formulated, and that µ can be increased by as much as 60% by magnetically orienting the MPA during setting. Design principles and shield designs compatible with MPA's are described, and data are provided to show that these new designs provide a marked improvement in shielding (by as much as a factor of four) along with size and weight reductions when compared with an earlier welded shield design.

Original languageEnglish (US)
Pages (from-to)1376-1378
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number5
StatePublished - Sep 1977
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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