Enhancement of spin seebeck effect in Fe3O4/Pt thin films with a-Fe nanodroplets

Venkat, G. ; Cox, C. D. W. ; Zhou, Z. ; Leo, N. ; Kinane, C. J. ; Caruana, A. J. ; Morrison, K.

Resumen: In this study, we demonstrate an enhancement of the measured spin Seebeck coefficient in Fe3O4/Pt bilayer films due to an increase in Fe nanodroplets formed by pulsed laser deposition. Four bilayer films were deposited at the same time from a highly textured target, resulting in a general increase in droplet formation that was confirmed to be Fe rich by scanning electron microscope and transmission electron microscope-dispersive x-ray spectroscopy. Of these four films, there were two distinct groupings with differing density of α-Fe droplets, where the bilayer with higher droplet density exhibited a 64% increase in the measured spin Seebeck coefficient from 38 to 63 nV m/W.

Idioma: Inglés

DOI: 10.1063/5.0165851

Año: 2023

Publicado en: Applied Physics Letters 123, 17 (2023), 172408 [7 pp.]
ISSN: 0003-6951

Factor impacto JCR: 3.5 (2023)

Categ. JCR: PHYSICS, APPLIED rank: 59 / 179 = 0.33 (2023) - Q2 - T1

Factor impacto CITESCORE: 6.4 - Physics and Astronomy (miscellaneous) (Q1)

Factor impacto SCIMAGO: 0.976 - Physics and Astronomy (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/EC/H2020/101001290/EU/3DNANOMAG-Three-dimensional nanoscale magnetic structures

Tipo y forma: Artículo (Versión definitiva)