Title

Modifying exchange bias effects of Mn/NiFe bilayers by in-situ Ar+ bombardment

RIS ID

113684

Publication Details

Causer, G. L., Manna, P. K., Chiu, C., Van Lierop, J., Ionescu, M., Lin, K. & Klose, F. (2017). Modifying exchange bias effects of Mn/NiFe bilayers by in-situ Ar+ bombardment. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 409 121-125.

Abstract

In this work, we present a procedure to modify the exchange bias (EB) properties of antiferromagnetic Mn/ferromagnetic NiFe bilayers by in-situ low energy Ar+ bombardment of the Mn layer during sample deposition. We present structural and magnetic results for unassisted and Ar+ assisted Mn/NiFe bilayers. X-ray diffraction, transmission electron microscopy and electron diffraction results establish different preferred Mn orientation directions between the two samples as a result of the Ar+ bombardment process. Hysteresis loops taken over several temperatures reveal that samples assisted with Ar+ ions during the Mn layer deposition had suppressed EB properties at low temperature as compared to samples grown without Ar+ assistance.

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Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.nimb.2017.03.116