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Article

Relationship between the Formation of Magnetic Clusters and Hexagonal Phase of Gold Matrix in AuxFe1−x Nanophase Thin Films

1
National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
2
Faculty of Physics, University of Bucharest, Atomistilor Street 405, 077125 Magurele, Romania
*
Author to whom correspondence should be addressed.
Academic Editor: Imre Bakonyi
Nanomaterials 2022, 12(7), 1176; https://doi.org/10.3390/nano12071176
Received: 28 February 2022 / Revised: 22 March 2022 / Accepted: 28 March 2022 / Published: 1 April 2022
AuxFe1−x nanophase thin films of different compositions and thicknesses were prepared by co-deposition magnetron sputtering. Complex morpho-structural and magnetic investigations of the films were performed by X-ray Diffraction, cross-section Transmission Electron Microscopy, Selected Area Electron Diffraction, Magneto Optical Kerr Effect, Superconducting Quantum Interference Device magnetometry and Conversion Electron Mössbauer Spectroscopy. It was proven that depending on the preparation conditions, different configurations of defect α-Fe magnetic clusters, i.e., randomly distributed or auto-assembled in lamellar or filiform configurations, can be formed in the Au matrix. A close relationship between the Fe clustering process and the type of the crystalline structure of the Au matrix was underlined, with the stabilization of a hexagonal phase at a composition close to 70 at. % of Au and at optimal thickness. Due to different types of inter-cluster magnetic interactions and spin anisotropies, different types of magnetic order from 2D Ising type to 3D Heisenberg type, as well as superparamagnetic behavior of non-interacting Fe clusters of similar average size, were evidenced. View Full-Text
Keywords: self-organized magnetic clusters; unidirectional anisotropy; hcp-Au in nanophase Au-Fe thin films; type of magnetic order self-organized magnetic clusters; unidirectional anisotropy; hcp-Au in nanophase Au-Fe thin films; type of magnetic order
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MDPI and ACS Style

Locovei, C.; Radu, C.; Kuncser, A.; Iacob, N.; Schinteie, G.; Stanciu, A.; Iftimie, S.; Kuncser, V. Relationship between the Formation of Magnetic Clusters and Hexagonal Phase of Gold Matrix in AuxFe1−x Nanophase Thin Films. Nanomaterials 2022, 12, 1176. https://doi.org/10.3390/nano12071176

AMA Style

Locovei C, Radu C, Kuncser A, Iacob N, Schinteie G, Stanciu A, Iftimie S, Kuncser V. Relationship between the Formation of Magnetic Clusters and Hexagonal Phase of Gold Matrix in AuxFe1−x Nanophase Thin Films. Nanomaterials. 2022; 12(7):1176. https://doi.org/10.3390/nano12071176

Chicago/Turabian Style

Locovei, Claudiu, Cristian Radu, Andrei Kuncser, Nicusor Iacob, Gabriel Schinteie, Anda Stanciu, Sorina Iftimie, and Victor Kuncser. 2022. "Relationship between the Formation of Magnetic Clusters and Hexagonal Phase of Gold Matrix in AuxFe1−x Nanophase Thin Films" Nanomaterials 12, no. 7: 1176. https://doi.org/10.3390/nano12071176

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