MegaOhm extraordinary Hall effect in oxidized CoFeB

G. Kopnov, A. Gerber

Research output: Contribution to journalArticlepeer-review

Abstract

We report on the development of controllably oxidized CoFeB ferromagnetic films demonstrating the extraordinary Hall effect (EHE) resistivity exceeding 1 Ω cm and magnetic field sensitivity up to 106 Ω/T. Such EHE resistivity is four orders of magnitude higher than that previously observed in ferromagnetic materials, while sensitivity is two orders larger than the best of semiconductors.

Original languageEnglish
Article number022404
JournalApplied Physics Letters
Volume109
Issue number2
DOIs
StatePublished - 11 Jul 2016

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