3D Magnetic Induction Maps of Nanoscale Materials Revealed by Electron Holographic Tomography

Wolf, D. ; Rodriguez, L.A. ; Béché, A. ; Javon, E. ; Serrano, L. ; Magen, C. (Universidad de Zaragoza) ; Gatel, C. ; Lubk, A. ; Lichte, H. ; Bals, S. ; Van Tendeloo, G. ; Fernández-Pacheco, A. (Universidad de Zaragoza) ; De Teresa, J.M. (Universidad de Zaragoza) ; Snoeck, E.

Resumen: The investigation of three-dimensional (3D) ferromagnetic nanoscale materials constitutes one of the key research areas of the current magnetism roadmap and carries great potential to impact areas such as data storage, sensing, and biomagnetism. The properties of such nanostructures are closely connected with their 3D magnetic nanostructure, making their determination highly valuable. Up to now, quantitative 3D maps providing both the internal magnetic and electric configuration of the same specimen with high spatial resolution are missing. Here, we demonstrate the quantitative 3D reconstruction of the dominant axial component of the magnetic induction and electrostatic potential within a cobalt nanowire (NW) of 100 nm in diameter with spatial resolution below 10 nm by applying electron holographic tomography. The tomogram was obtained using a dedicated TEM sample holder for acquisition, in combination with advanced alignment and tomographic reconstruction routines. The powerful approach presented here is widely applicable to a broad range of 3D magnetic nanostructures and may trigger the progress of novel spintronic nonplanar nanodevices.

Idioma: Inglés

DOI: 10.1021/acs.chemmater.5b02723

Año: 2015

Publicado en: CHEMISTRY OF MATERIALS 27, 19 (2015), 6771-6778
ISSN: 0897-4756

Factor impacto JCR: 9.407 (2015)

Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 15 / 271 = 0.055 (2015) - Q1 - T1
Categ. JCR: CHEMISTRY, PHYSICAL rank: 10 / 144 = 0.069 (2015) - Q1 - T1

Factor impacto SCIMAGO: 3.958 - Chemical Engineering (miscellaneous) (Q1) - Materials Chemistry (Q1) - Chemistry (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2014-51982-C2

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Física de la Tierra (Dpto. Física Teórica)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)