A study of magnetic interactions of Ni80Fe20 arrays using ultra-sensitive microcantilever torque magnetometry

Published

June 1, 2004

Author(s)

Lan Gao, D. Q. Feng, L. Yuan, T. Yokota, R. Sabirianov, Sy-Hwang Liou, Michelle Chabot, Daniel Porpora, John M. Moreland

Abstract

We have successfully fabricated single and paired 300 nm × 1.5 υm × 32 nm Ni₈₀Fe₂₀ bars on a microcantilever using focused ion beam milling. Magnetic interactions of these paired bars were studied by using magnetic force microscopy, microcantilever torque magnetometry and micromagnetic simulation. Our results clearly indicate that the magnetic switching behavior of the paired Ni₈₀Fe₂₀ bars is affected by magnetostatic interactions. The M-H hysteresis curves for a sample with 8 pairs of Ni₈₀Fe₂₀ bars consists of a series of stable switching states that are related to the domain wall motion in the bars.

Citation

Journal of Applied Physics

Volume

95

Issue

11

Pub Type

Journals

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Keywords

Domain structure, Fe alloys, Magnetization curves, Microcantilever, Torque magnetometry

Citation

Gao, L. , Feng, D. , Yuan, L. , Yokota, T. , Sabirianov, R. , Liou, S. , Chabot, M. , Porpora, D. and Moreland, J. (2004), A study of magnetic interactions of Ni80Fe20 arrays using ultra-sensitive microcantilever torque magnetometry, Journal of Applied Physics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=31538 (Accessed November 21, 2024)