Finite size effects on the metamagnetic phase transition in a thick B2 FeRh nanocluster film - Archive ouverte HAL Access content directly
Journal Articles Nanoscale Year : 2024

Finite size effects on the metamagnetic phase transition in a thick B2 FeRh nanocluster film

Infante Ingrid C.
Edwige Otero
  • Function : Author
Damien Le Roy
Véronique Dupuis

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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Dates and versions

hal-04613955 , version 1 (17-06-2024)

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Guillermo Herrera, Anthony Robert, Sara Gonzalez, Patrick Schoeffmann, Alexandre Tamion, et al.. Finite size effects on the metamagnetic phase transition in a thick B2 FeRh nanocluster film. Nanoscale, In press, ⟨10.1039/D4NR00873A⟩. ⟨hal-04613955⟩
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