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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Haskel, Daniel
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (5/5 displayed)
- 2023Momentum-independent magnetic excitation continuum in the honeycomb iridate H3LiIr2O6citations
- 2022Functional properties of Yttrium Iron Garnett thin films on graphene-coated Gd<sub>3</sub>Ga<sub>5</sub>O<sub>12</sub> for remote epitaxial transfercitations
- 2021Colossal Magnetoresistance without Mixed Valence in a Layered Phosphide Crystalcitations
- 2019Room‐Temperature Ferromagnetic Insulating State in Cation‐Ordered Double‐Perovskite Sr<sub>2</sub>Fe<sub>1+</sub><i><sub>x</sub></i>Re<sub>1−</sub><i><sub>x</sub></i>O<sub>6</sub>Filmscitations
- 2009Stress-induced large Curie temperature enhancement in Fe64Ni36 Invar alloycitations
Places of action
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article
Room‐Temperature Ferromagnetic Insulating State in Cation‐Ordered Double‐Perovskite Sr<sub>2</sub>Fe<sub>1+</sub><i><sub>x</sub></i>Re<sub>1−</sub><i><sub>x</sub></i>O<sub>6</sub>Films
Abstract
<jats:title>Abstract</jats:title><jats:p>Ferromagnetic insulators (FMIs) are one of the most important components in developing dissipationless electronic and spintronic devices. However, FMIs are innately rare to find in nature as ferromagnetism generally accompanies metallicity. Here, novel room‐temperature FMI films that are epitaxially synthesized by deliberate control of the ratio between two B‐site cations in the double perovskite Sr<jats:sub>2</jats:sub>Fe<jats:sub>1+</jats:sub><jats:italic><jats:sub>x</jats:sub></jats:italic>Re<jats:sub>1‐</jats:sub><jats:italic><jats:sub>x</jats:sub></jats:italic>O<jats:sub>6</jats:sub> (−0.2 ≤ <jats:italic>x</jats:italic> ≤ 0.2) are reported. In contrast to the known FM metallic phase in stoichiometric Sr<jats:sub>2</jats:sub>FeReO<jats:sub>6</jats:sub>, an FMI state with a high Curie temperature (<jats:italic>T</jats:italic><jats:sub>c</jats:sub> ≈ 400 K) and a large saturation magnetization (<jats:italic>M</jats:italic><jats:sub>S</jats:sub> ≈ 1.8 µ<jats:sub>B</jats:sub> f.u.<jats:sup>−1</jats:sup>) is found in highly cation‐ordered Fe‐rich phases. The stabilization of the FMI state is attributed to the formation of extra Fe<jats:sup>3+</jats:sup>Fe<jats:sup>3+</jats:sup> and Fe<jats:sup>3+</jats:sup>Re<jats:sup>6+</jats:sup> bonding states, which originate from the relatively excess Fe ions owing to the deficiency in Re ions. The emerging FMI state created by controlling cations in the oxide double perovskites opens the door to developing novel oxide quantum materials and spintronic devices.</jats:p>