MnxGa1−xnanodots with high coercivity and perpendicular magnetic anisotropy

Karel J, Casoli F, Lupo P, Celegato F, Sahoo R, Ernst B, Tiberto P, Albertini F, Felser C (2016)

Publication Type: Journal article

Publication year: 2016

Journal

Applied Surface Science Elsevier

Book Volume: 387

Pages Range: 1169-1173

DOI: 10.1016/j.apsusc.2016.07.029

Abstract

A Mn x Ga 1−x (x = 0.70) epitaxial thin film with perpendicular magnetic anisotropy and a large coercivity (μ 0 H c  = 1 T) was patterned into nanodots using a combined self-assembly nanolithography and plasma etching procedure. Nanostructuring is achieved by self-assembly of polystyrene nanospheres acting as a mask on the magnetic film. This procedure allows easy patterning of a large area although introduced some chemical disorder, which resulted in a soft magnetic component in the magnetic hysteresis loops. However, chemical order was recovered after vacuum annealing at low temperature. The resulting nanodots retain the properties of the original film, i.e. magnetization oriented perpendicular to the particle and large coercivity. Our results suggest this lithography procedure could be a promising direction for nanostructuring tetragonal Heusler alloys.

Involved external institutions

Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE) Istituto dei Materiali per l'Elettronica ed il Magnetismo IMEM IT Italy (IT) Italian National Institute of Metrology Research / Istituto Nazionale di Ricerca Metrologica (INRiM) IT Italy (IT)

How to cite

APA:

Karel, J., Casoli, F., Lupo, P., Celegato, F., Sahoo, R., Ernst, B.,... Felser, C. (2016). MnxGa1−xnanodots with high coercivity and perpendicular magnetic anisotropy. Applied Surface Science, 387, 1169-1173. https://doi.org/10.1016/j.apsusc.2016.07.029

MLA:

Karel, Julie, et al. "MnxGa1−xnanodots with high coercivity and perpendicular magnetic anisotropy." Applied Surface Science 387 (2016): 1169-1173.

BibTeX: Download