Gamma radiation hardness of PHEB magnetometers
(English)Manuscript (preprint) (Other academic)
We study planar Hall eect bridge (PHEB) sensors under gamma ray irradiation to investigate their potential use in space applications. We fabricate and characterize a wide range of PHEBs with dierent geometries to evaluate the eects of irradiation. We observe no signicant change in performance for the sensors irradiated by gamma rays with doses up to 100 krad. However, a dramatic increase in sensor noise and a corresponding loss in detectivity are observed after 300 krad of radiation. Our results indicate that PHEB magnetometers can operate for at least 5 years in orbit.
Condensed Matter Physics
Research subject Physics; Materials Science and Engineering
IdentifiersURN: urn:nbn:se:kth:diva-187236OAI: oai:DiVA.org:kth-187236DiVA: diva2:929323
QC 201605192016-05-182016-05-182016-05-19Bibliographically approved