A new way of detecting very small magnetic fields is presented, using the magnetoresistance effect of laminated permalloy. The magnetic properties of permalloy/molybdenum/permalloy sandwiches are investigated. It was found that for molybdenum layers above ca. 1000 Å the effect of lamination decreases. Model calculations about the magnetic structures are presented. The calculated results agree with the experimental results.
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Ooyen et al. (1982) studied this question.
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