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Article Dans Une Revue Physical Review B Année : 2024

Preferential orientations of FeRh nanomagnets deposited on a BaTiO$_3$ epitaxial thin film

G. Herrera
Pierre Capiod
D. Le Roy
V. Dupuis
A. Resta
Philippe Ohresser
Lucio Martinelli
X. Weng
  • Fonction : Auteur
F. Tournus

Résumé

Size-selected FeRh clusters have been deposited at low energy and under ultra-high vacuum conditions, on a BaTiO$_3$ epitaxial thin film. Using x-ray diffraction in grazing incidence configuration, we have observed the chemical ordering of FeRh nanoparticles into the chemically ordered B2 phase after annealing, while a reciprocal space mapping indicates that particles, despite their random deposition, are finally adopting preferential orientations reflecting an atomic ordering with the BaTiO$_3$ crystal. In addition to the usual epitaxy relationship observed for FeRh thin films, an unexpected orientation is detected (45° in-plane rotation, leading to a new cube-on-cube epitaxy relationship), which must be specific to nanosized FeRh particles.
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Dates et versions

hal-04621770 , version 1 (24-06-2024)
hal-04621770 , version 2 (24-06-2024)

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A. Reyes, G. Herrera, Pierre Capiod, D. Le Roy, V. Dupuis, et al.. Preferential orientations of FeRh nanomagnets deposited on a BaTiO$_3$ epitaxial thin film. Physical Review B, 2024, 109 (24), pp.245410. ⟨10.1103/PhysRevB.109.245410⟩. ⟨hal-04621770v1⟩
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