Synthesis and Three-Dimensional Magnetic Field Mapping of Co2FeGa Heusler Nanowires at 5 nm Resolution

Simon P, Wolf D, Wang C, Levin AA, Lubk A, Sturm S, Lichte H, Fecher GH, Felser C (2016)

Publication Type: Journal article

Publication year: 2016

Journal

Nano Letters American Chemical Society

Book Volume: 16

Pages Range: 114-120

Journal Issue: 1

DOI: 10.1021/acs.nanolett.5b03102

Abstract

(Chemical Presented) We present the synthesis of Co2FeGa Heusler nanowires and the results of our investigations on their three-dimensional (3D) electric and magnetic internal and external fields mapped by electron holographic tomography (EHT). These fields will be of great importance in next-generation nanomagnets integrated in spintronics and memory devices. The Co2FeGa nanowires with a L21 ordered structure are prepared by a SBA-15 silica-assisted method. The magnetic dipole-like stray fields of several Co2FeGa nanowires are revealed by holographically reconstructed phase images. Based on the measured magnetic phase shifts of an individual nanowire and its 3D reconstruction using EHT, we obtain an internal magnetic induction with a magnitude of 1.15 T and a nonmagnetic surface layer of 10 nm thickness. Furthermore, we also reconstruct the 3D distribution of the electrostatic potential of the same nanowire.

Involved external institutions

Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids

Germany (DE) Technische Universität Dresden

Germany (DE)

How to cite

APA:

Simon, P., Wolf, D., Wang, C., Levin, A.A., Lubk, A., Sturm, S.,... Felser, C. (2016). Synthesis and Three-Dimensional Magnetic Field Mapping of Co2FeGa Heusler Nanowires at 5 nm Resolution. Nano Letters, 16(1), 114-120. https://doi.org/10.1021/acs.nanolett.5b03102

MLA:

Simon, Paul, et al. "Synthesis and Three-Dimensional Magnetic Field Mapping of Co2FeGa Heusler Nanowires at 5 nm Resolution." Nano Letters 16.1 (2016): 114-120.

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