MegaOhm extraordinary Hall effect in oxidized CoFeB

G. Kopnov; A. Gerber

doi:10.1063/1.4958832

MegaOhm extraordinary Hall effect in oxidized CoFeB

G. Kopnov
, A. Gerber

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

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 language	English
Article number	022404
Journal	Applied Physics Letters
Volume	109
Issue number	2
DOIs	https://doi.org/10.1063/1.4958832
State	Published - 11 Jul 2016

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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.",

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AB - 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.

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MegaOhm extraordinary Hall effect in oxidized CoFeB

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