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Merkel DG, Lengyel A, Nagy DL, Németh A, Horváth ZE, Bogdán C, Gracheva MA, Hegedűs G, Sajti S, Radnóczi GZ, Szilágyi E. Reversible control of magnetism in FeRh thin films. Sci Rep 2020; 10:13923. [PMID: 32811888 PMCID: PMC7435192 DOI: 10.1038/s41598-020-70899-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 08/03/2020] [Indexed: 11/22/2022] Open
Abstract
The multilayer of approximate structure MgO(100)/[nFe51Rh49(63 Å)/57Fe51Rh49(46 Å)]10 deposited at 200 °C is primarily of paramagnetic A1 phase and is fully converted to the magnetic B2 phase by annealing at 300 °C for 60 min. Subsequent irradiation by 120 keV Ne+ ions turns the thin film completely to the paramagnetic A1 phase. Repeated annealing at 300 °C for 60 min results in 100% magnetic B2 phase, i.e. a process that appears to be reversible at least twice. The A1 → B2 transformation takes place without any plane-perpendicular diffusion while Ne+ irradiation results in significant interlayer mixing.
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Affiliation(s)
- Dániel G Merkel
- Wigner Research Centre for Physics, P.O.B. 49, 1525, Budapest, Hungary.
- Centre for Energy Research, P.O.B. 49, 1525, Budapest, Hungary.
| | - Attila Lengyel
- Wigner Research Centre for Physics, P.O.B. 49, 1525, Budapest, Hungary
| | - Dénes L Nagy
- Wigner Research Centre for Physics, P.O.B. 49, 1525, Budapest, Hungary
| | - Attila Németh
- Wigner Research Centre for Physics, P.O.B. 49, 1525, Budapest, Hungary
| | - Zsolt E Horváth
- Centre for Energy Research, P.O.B. 49, 1525, Budapest, Hungary
| | - Csilla Bogdán
- Wigner Research Centre for Physics, P.O.B. 49, 1525, Budapest, Hungary
| | - Maria A Gracheva
- Institute of Chemistry, Eötvös Loránd University, Pázmány Péter sétány 1/A, 1117, Budapest, Hungary
| | - Gergő Hegedűs
- Wigner Research Centre for Physics, P.O.B. 49, 1525, Budapest, Hungary
| | - Szilárd Sajti
- Wigner Research Centre for Physics, P.O.B. 49, 1525, Budapest, Hungary
| | | | - Edit Szilágyi
- Wigner Research Centre for Physics, P.O.B. 49, 1525, Budapest, Hungary
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Brodacka S, Kozlowski M, Kozubski R, Goyhenex C, Murch GE. Chemical ordering phenomena in nanostructured FePt: Monte Carlo simulations. Phys Chem Chem Phys 2015; 17:28394-406. [DOI: 10.1039/c5cp01054c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selective surface-induced destabilization of L10 superstructure variants is simulated in FePt nanostructures of diverse dimensionalities.
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Affiliation(s)
- S. Brodacka
- M. Smoluchowski Institute of Physics
- Jagiellonian University in Krakow
- 30-348 Krakow
- Poland
| | - M. Kozlowski
- M. Smoluchowski Institute of Physics
- Jagiellonian University in Krakow
- 30-348 Krakow
- Poland
| | - R. Kozubski
- M. Smoluchowski Institute of Physics
- Jagiellonian University in Krakow
- 30-348 Krakow
- Poland
| | - Ch. Goyhenex
- Institut de Physique et Chimie des Matériaux de Strasbourg
- Université de Strasbourg
- CNRS UMR 7504
- F-67034 Strasbourg
- France
| | - G. E. Murch
- The University Centre for Mass and Thermal Transport in Engineering Materials
- Priority Research Centre for Geotechnical and Materials Modelling
- School of Engineering
- The University of Newcastle
- Callaghan
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