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The influence of magnetocrystalline anisotropy on the magnetocaloric effect: A case study on Co 2B

Opened Access The influence of magnetocrystalline anisotropy on the magnetocaloric effect: A case study on Co 2B

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Autor: Fries, M
Skokov, K. P.
Karpentov, Dmitriy
Franco García, Victorino
Ener, S
Gutfleisch, O
Departamento: Universidad de Sevilla. Departamento de Física de la Materia Condensada
Fecha: 2016
Tipo de documento: Artículo
Resumen: The influence of magnetocrystalline anisotropy on the magnetocaloric effect (MCE) was studied on single crystals of CoB and compared to measurements on polycrystalline samples. Large differences in adiabatic temperature change Δ T a d and magnetic entropy change Δ S M were found along the different crystallographic directions. The magnetocaloric effect differs by 40% in the case of Δ T a d in a field change of 1.9 T when applying the field along the hard axis and easy plane of magnetization. In the case of Δ S M, the values differ 50% and 35% from each other in field changes of 1 and 1.9 T, respectively. It was found that this anisotropy effect does not saturate in fields up to 4 T, which is higher than the anisotropy field of CoB ( ≈2 T). A simple model was developed to illustrate the possible effect on magnetocrystalline anisotropy, showing large differences especially in application relevant fields of about 1 T. The results strongly suggest that the MCE could be maximized when orie...
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Cita: Fries, M., Skokov, K.P., Karpentov, D., Franco García, V., Ener, S. y Gutfleisch, O. (2016). The influence of magnetocrystalline anisotropy on the magnetocaloric effect: A case study on Co 2B. Applied Physics Letters, 109, 1-6.
Tamaño: 500.1Kb
Formato: PDF

URI: https://hdl.handle.net/11441/71486

DOI: 10.1063/1.4971839

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