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Herrera G, Robert A, Gonzalez S, Schoeffmann P, Tamion A, Tournus F, Bardotti L, Boisron O, Albin C, Blanchard N, Canero-Infante I, Romeo PR, Canut B, Otero E, Ohresser P, Wilhelm F, Rogalev A, Bugnet M, Le Roy D, Dupuis V. Finite size effects on the metamagnetic phase transition in a thick B2 FeRh nanocluster film. NANOSCALE 2024; 16:11679-11687. [PMID: 38856701 DOI: 10.1039/d4nr00873a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
FeRh alloys in the CsCl-type (B2) chemically ordered phase present an antiferromagnetic to ferromagnetic order transition around 370 K observed in bulk and continuous films but absent in nanoclusters. In this study, we investigate the thermal magnetic behavior of a thick film composed of assembled FeRh nanoclusters preformed in the gas phase. This work reveals a broad and asymmetric metamagnetic transition with a consequent residual magnetization at low temperature. Due to the coexistence of different grain sizes in the sample, we confront the results with a description that involves two populations of B2-FeRh particles, and the existence of a discriminating size below which the magnetic order transition does not take place.
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Affiliation(s)
- Guillermo Herrera
- Institut Lumière Matière, UMR 5306, Université Lyon 1-CNRS, Université de Lyon, F-69622 Villeurbanne Cedex, France.
| | - Anthony Robert
- Institut Lumière Matière, UMR 5306, Université Lyon 1-CNRS, Université de Lyon, F-69622 Villeurbanne Cedex, France.
| | - Sara Gonzalez
- Institut des Nanotechnologies de Lyon, CNRS UMR 5270 ECL INSA UCBL CPE, F-69621 Villeurbanne Cedex, France
| | | | - Alexandre Tamion
- Institut Lumière Matière, UMR 5306, Université Lyon 1-CNRS, Université de Lyon, F-69622 Villeurbanne Cedex, France.
| | - Florent Tournus
- Institut Lumière Matière, UMR 5306, Université Lyon 1-CNRS, Université de Lyon, F-69622 Villeurbanne Cedex, France.
| | - Laurent Bardotti
- Institut Lumière Matière, UMR 5306, Université Lyon 1-CNRS, Université de Lyon, F-69622 Villeurbanne Cedex, France.
| | - Olivier Boisron
- Institut Lumière Matière, UMR 5306, Université Lyon 1-CNRS, Université de Lyon, F-69622 Villeurbanne Cedex, France.
| | - Clément Albin
- Institut Lumière Matière, UMR 5306, Université Lyon 1-CNRS, Université de Lyon, F-69622 Villeurbanne Cedex, France.
| | - Nicholas Blanchard
- Institut Lumière Matière, UMR 5306, Université Lyon 1-CNRS, Université de Lyon, F-69622 Villeurbanne Cedex, France.
| | - Ingrid Canero-Infante
- Institut des Nanotechnologies de Lyon, CNRS UMR 5270 ECL INSA UCBL CPE, F-69621 Villeurbanne Cedex, France
| | - Pedro Rojo Romeo
- Institut des Nanotechnologies de Lyon, CNRS UMR 5270 ECL INSA UCBL CPE, F-69621 Villeurbanne Cedex, France
| | - Bruno Canut
- Institut des Nanotechnologies de Lyon, CNRS UMR 5270 ECL INSA UCBL CPE, F-69621 Villeurbanne Cedex, France
| | - Edwige Otero
- Synchrotron SOLEIL, L'Orme de Merisiers, 91190 Saint-Aubin, France
| | | | - Fabrice Wilhelm
- European Synchrotron Radiation Facility, CS 40220, F-38043 Grenoble, France
| | - Andrei Rogalev
- European Synchrotron Radiation Facility, CS 40220, F-38043 Grenoble, France
| | - Matthieu Bugnet
- CNRS, INSA Lyon, Université Claude Bernard Lyon 1, MATEIS, UMR5510, F-69621 Villeurbanne, France
| | - Damien Le Roy
- Institut Lumière Matière, UMR 5306, Université Lyon 1-CNRS, Université de Lyon, F-69622 Villeurbanne Cedex, France.
| | - Véronique Dupuis
- Institut Lumière Matière, UMR 5306, Université Lyon 1-CNRS, Université de Lyon, F-69622 Villeurbanne Cedex, France.
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Gracheva M, Homonnay Z, Singh A, Fodor F, Marosi VB, Solti Á, Kovács K. New aspects of the photodegradation of iron(III) citrate: spectroscopic studies and plant-related factors. Photochem Photobiol Sci 2022; 21:983-996. [PMID: 35199321 DOI: 10.1007/s43630-022-00188-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 02/07/2022] [Indexed: 11/26/2022]
Abstract
Iron (Fe) is an essential cofactor for all livings. Although Fe membrane transport mechanisms often utilize FeII, uncoordinated or deliberated ferrous ions can initiate Fenton reactions. FeIII citrate complexes are among the most important complexed forms of FeIII especially in plants that, indeed, can undergo photoreduction. Since leaves as photosynthetic organs of higher plants are generally exposed to illumination in daytime, photoreaction of ferric species may have biological relevance in iron metabolism, the relevance of which is poorly understood. In present work FeIII citrate transformation during the photodegradation in solution and after foliar application on leaves was studied by Mössbauer analysis directly. To obtain irradiation time dependence of the speciation of iron in solutions, four model solutions of different pH values (1.5, 3.3, 5.5, and 7.0) with Fe to citrate molar ratio 1:1.1 were exposed to light. Highly acidic conditions led to a complete reduction of Fe together with the formation of FeII citrate and hexaaqua complexes in equal concentration. At higher pH, the only product of the photodegradation was FeII citrate, which was later reoxidized and polymerized, resulting in the formation of polynuclear stable ferric compound. To test biological relevance, leaves of cabbage were treated with FeIII citrate solution. X-ray fluorescence imaging indicated the accumulation of Fe in the treated leaf parts. Mössbauer analysis revealed the presence of several ferric species incorporated into the biological structure. The Fe speciation observed should be considered in biological systems where FeIII citrate has a ubiquitous role in Fe acquisition and homeostasis.
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Affiliation(s)
- Maria Gracheva
- Institute of Chemistry, ELTE Eötvös Loránd University, Pázmány Péter s. 1/A, Budapest, 1117, Hungary.
- Hevesy György Doctoral School of Chemistry, ELTE Eötvös Loránd University, Pázmány Péter s. 1/A, Budapest, 1117, Hungary.
| | - Zoltán Homonnay
- Institute of Chemistry, ELTE Eötvös Loránd University, Pázmány Péter s. 1/A, Budapest, 1117, Hungary
| | - Amarjeet Singh
- Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter s. 1/C, Budapest, 1117, Hungary
- Doctoral School of Biology, ELTE Eötvös Loránd University, Pázmány Péter s. 1/C, Budapest, 1117, Hungary
| | - Ferenc Fodor
- Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter s. 1/C, Budapest, 1117, Hungary
| | - Vanda B Marosi
- Plant Genome and Systems Biology, Helmholtz Center Munich, German Research Center for Environmental Health (GmbH), Ingolstädter Landstr. 1, 85764, Neuherberg, Germany
| | - Ádám Solti
- Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter s. 1/C, Budapest, 1117, Hungary
| | - Krisztina Kovács
- Institute of Chemistry, ELTE Eötvös Loránd University, Pázmány Péter s. 1/A, Budapest, 1117, Hungary
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Andreeva M, Smekhova A, Baulin R, Repchenko Y, Bali R, Schmitz-Antoniak C, Wende H, Sergueev I, Schlage K, Wille HC. Evolution of the magnetic hyperfine field profiles in an ion-irradiated Fe 60Al 40 film measured by nuclear resonant reflectivity. JOURNAL OF SYNCHROTRON RADIATION 2021; 28:1535-1543. [PMID: 34475301 DOI: 10.1107/s1600577521007694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 07/27/2021] [Indexed: 06/13/2023]
Abstract
Nuclear resonant reflectivity (NRR) from an Fe60Al40 film was measured using synchrotron radiation at several grazing angles near the critical angle of total external reflection. Using laterally resolved measurements after irradiation with 20 keV Ne+ ions of gradually varying fluence of 0-3.0 × 1014 ions cm-2, the progressive creation of the ferromagnetic A2 phase with increasing ion fluence was confirmed. The observed depth selectivity of the method has been explained by application of the standing wave approach. From the time spectra of the nuclear resonant scattering in several reflection directions the depth profiles for different hyperfine fields were extracted. The results show that the highest magnetic hyperfine fields (∼18-23 T) are initially created in the central part of the film and partially at the bottom interface with the SiO2 substrate. The evolution of the ferromagnetic onset, commencing at a fixed depth within the film and propagating towards the interfaces, has been directly observed. At higher fluence (3.0 × 1014 ions cm-2) the depth distribution of the ferromagnetic fractions became more homogeneous across the film depth, in accordance with previous results.
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Affiliation(s)
- Marina Andreeva
- Faculty of Physics, M. V. Lomonosov Moscow State University, Moscow 119991, Russian Federation
| | - Alevtina Smekhova
- Peter Grünberg Institute (PGI-6), Jülich Research Center, 52425 Jülich, Germany
| | - Roman Baulin
- Faculty of Physics, M. V. Lomonosov Moscow State University, Moscow 119991, Russian Federation
| | - Yurii Repchenko
- National Research Centre `Kurchatov Institute', Pl. Kurchatova 1, Moscow 123182, Russian Federation
| | - Rantej Bali
- Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany
| | | | - Heiko Wende
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 47048 Duisburg, Germany
| | - Ilya Sergueev
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - Kai Schlage
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
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Nadarajah R, Tahir S, Landers J, Koch D, Semisalova AS, Wiemeler J, El-Zoka A, Kim SH, Utzat D, Möller R, Gault B, Wende H, Farle M, Gökce B. Controlling the Oxidation of Magnetic and Electrically Conductive Solid-Solution Iron-Rhodium Nanoparticles Synthesized by Laser Ablation in Liquids. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E2362. [PMID: 33261038 PMCID: PMC7760681 DOI: 10.3390/nano10122362] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 11/18/2020] [Accepted: 11/23/2020] [Indexed: 01/26/2023]
Abstract
This study focuses on the synthesis of FeRh nanoparticles via pulsed laser ablation in liquid and on controlling the oxidation of the synthesized nanoparticles. Formation of monomodal γ-FeRh nanoparticles was confirmed by transmission electron microscopy (TEM) and their composition confirmed by atom probe tomography (APT). For these particles, three major contributors to oxidation were analysed: (1) dissolved oxygen in the organic solvents, (2) the bound oxygen in the solvent and (3) oxygen in the atmosphere above the solvent. The decrease of oxidation for optimized ablation conditions was confirmed through energy-dispersive X-ray (EDX) and Mössbauer spectroscopy. Furthermore, the time dependence of oxidation was monitored for dried FeRh nanoparticles powders using ferromagnetic resonance spectroscopy (FMR). By magnetophoretic separation, B2-FeRh nanoparticles could be extracted from the solution and characteristic differences of nanostrand formation between γ-FeRh and B2-FeRh nanoparticles were observed.
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Affiliation(s)
- Ruksan Nadarajah
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitaetsstr. 7, 45141 Essen, Germany; (R.N.); (S.T.)
| | - Shabbir Tahir
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitaetsstr. 7, 45141 Essen, Germany; (R.N.); (S.T.)
| | - Joachim Landers
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Lotharstr. 1, 47057 Duisburg, Germany; (J.L.); (A.S.S.); (J.W.); (D.U.); (R.M.); (H.W.); (M.F.)
| | - David Koch
- Institute of Materials Science, University of Technology, Alarich-Weiss-Strasse 2, 64287 Darmstadt, Germany;
| | - Anna S. Semisalova
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Lotharstr. 1, 47057 Duisburg, Germany; (J.L.); (A.S.S.); (J.W.); (D.U.); (R.M.); (H.W.); (M.F.)
| | - Jonas Wiemeler
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Lotharstr. 1, 47057 Duisburg, Germany; (J.L.); (A.S.S.); (J.W.); (D.U.); (R.M.); (H.W.); (M.F.)
| | - Ayman El-Zoka
- Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Strasse 1, 40237 Düsseldorf, Germany; (A.E.-Z.); (S.-H.K.); (B.G.)
| | - Se-Ho Kim
- Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Strasse 1, 40237 Düsseldorf, Germany; (A.E.-Z.); (S.-H.K.); (B.G.)
| | - Detlef Utzat
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Lotharstr. 1, 47057 Duisburg, Germany; (J.L.); (A.S.S.); (J.W.); (D.U.); (R.M.); (H.W.); (M.F.)
| | - Rolf Möller
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Lotharstr. 1, 47057 Duisburg, Germany; (J.L.); (A.S.S.); (J.W.); (D.U.); (R.M.); (H.W.); (M.F.)
| | - Baptiste Gault
- Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Strasse 1, 40237 Düsseldorf, Germany; (A.E.-Z.); (S.-H.K.); (B.G.)
- Department of Materials, Royal School of Mines, Imperial College London, London SW7 2AZ, UK
| | - Heiko Wende
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Lotharstr. 1, 47057 Duisburg, Germany; (J.L.); (A.S.S.); (J.W.); (D.U.); (R.M.); (H.W.); (M.F.)
| | - Michael Farle
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Lotharstr. 1, 47057 Duisburg, Germany; (J.L.); (A.S.S.); (J.W.); (D.U.); (R.M.); (H.W.); (M.F.)
| | - Bilal Gökce
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitaetsstr. 7, 45141 Essen, Germany; (R.N.); (S.T.)
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