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Structural evidence for stabilized ferromagnetism in epitaxial FeRh nanoislands

Loving M, Jimenez-Villacorta F, Kaeswurm B, Arena DA, Marrows CH, Lewis LH (2013)

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Publication Status: Published

Publication Type: Journal article

Publication year: 2013

Journal

Publisher: Institute of Physics: Hybrid Open Access

Book Volume: 46

DOI: 10.1088/0022-3727/46/16/162002

Abstract

Nanoislands of alpha'-FeRh were formed by the deposition of a 10 nm film onto (0 0 1)-MgO and observed by atomic force microscopy. This island-like architecture results in stabilized ferromagnetic (FM) ordering at low temperatures as noted by asymmetry in the x-ray diffraction peaks, a magnetostructural transition with a large magnetic background signal, and broad thermal hysteresis. The combination of structural and magnetic results suggest that the crystallographic arrangement of the FeRh nanoislands consists of a gradient of lattice parameters where there is a compressed inner region of lower lattice parameter values (attributed to antiferromagnetic ordering) which gradually relaxes outward to a region of larger lattice parameters (attributed to a retained FM ordering). The impact of this configuration on magnetostructural transformation is discussed in the context of classical nucleation theory.

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APA:

Loving, M., Jimenez-Villacorta, F., Kaeswurm, B., Arena, D.A., Marrows, C.H., & Lewis, L.H. (2013). Structural evidence for stabilized ferromagnetism in epitaxial FeRh nanoislands. Journal of Physics D-Applied Physics, 46. https://dx.doi.org/10.1088/0022-3727/46/16/162002

MLA:

Loving, M., et al. "Structural evidence for stabilized ferromagnetism in epitaxial FeRh nanoislands." Journal of Physics D-Applied Physics 46 (2013).

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