Quasi-antiferromagnetic multilayer stacks with 90 degree coupling mediated by thin Fe oxide spacers

Nagashima G, Kurokawa Y, Zhong Y, Horiike S, Schoenke D, Krautscheid P, Reeve R, Klaeui M, Inagaki Y, Kawae T, Tanaka T, Matsuyama K, Ohnishi K, Kimura T, Yuasa H (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Journal of Applied Physics AIP Publishing

Book Volume: 126

Article Number: 093901

Journal Issue: 9

DOI: 10.1063/1.5117869

Abstract

We fabricated quasiantiferromagnetic (quasi-AFM) layers with alternating antiparallel magnetization in the neighboring domains via 90° magnetic coupling through an Fe-O layer. We investigated the magnetic properties and the relationship between the magnetic domain size and the 90° magnetic coupling via experiments and calculations. Two types of samples with a Ru buffer and a (Ni80Fe20)Cr40 buffer were prepared, and we found that with the NiFeCr buffer, the sample has a flatter Fe-O layer, leading to stronger 90° magnetic coupling and a smaller domain size compared with the Ru buffer sample. This trend is well explained by the bilinear and biquadratic coupling coefficients, A12 and B12, in Landau-Lifshitz-Gilbert simulations, suggesting the possibility of using both AFM and FM properties by controlling the quasi-AFM domain size.

Involved external institutions

Kyushu University / 九州大学 JP Japan (JP) Johannes Gutenberg-Universität Mainz (JGU) DE Germany (DE)

How to cite

APA:

Nagashima, G., Kurokawa, Y., Zhong, Y., Horiike, S., Schoenke, D., Krautscheid, P.,... Yuasa, H. (2019). Quasi-antiferromagnetic multilayer stacks with 90 degree coupling mediated by thin Fe oxide spacers. Journal of Applied Physics, 126(9). https://doi.org/10.1063/1.5117869

MLA:

Nagashima, G., et al. "Quasi-antiferromagnetic multilayer stacks with 90 degree coupling mediated by thin Fe oxide spacers." Journal of Applied Physics 126.9 (2019).

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