Please use this identifier to cite or link to this item:
http://doi.org/10.25358/openscience-459
Authors: | Weber, Ramon Han, Dong-Soo Boventer, Isabella Jaiswal, Samridh Lebrun, Romain Jakob, Gerhard Kläui, Mathias |
Title: | Gilbert damping of CoFe-alloys |
Online publication date: | 25-Oct-2019 |
Year of first publication: | 2019 |
Language: | english |
Abstract: | We report structural, magnetic and dynamic properties of polycrystalline coxfe1-x-alloy films on sapphire, silicon, and mgo substrates across the full composition range, by using a vector network analyser ferromagnetic resonance measurement technique (vna-fmr), superconducting quantum interference device magnetometry (squid) and x-ray diffraction (xrd). in the approximate vicinity of 28% co, we observe a minimum of the damping parameter, associated with a reduction in the density of states to a minimum value at the fermi energy level. for films on all substrates, we find magnetic damping of the order of 4-5 . 10(-3), showing that the substrate does not play a major role. using a post-annealing process, we report a decrease of the magnetic damping down to 3-4 . 10(-3). we find that the saturation magnetization depends approximately reciprocally on the damping parameter with varying alloy composition. |
DDC: | 530 Physik 530 Physics |
Institution: | Johannes Gutenberg-Universität Mainz |
Department: | FB 08 Physik, Mathematik u. Informatik |
Place: | Mainz |
ROR: | https://ror.org/023b0x485 |
DOI: | http://doi.org/10.25358/openscience-459 |
URN: | urn:nbn:de:hebis:77-publ-593706 |
Version: | Accepted version |
Publication type: | Zeitschriftenaufsatz |
License: | In Copyright |
Information on rights of use: | https://rightsstatements.org/vocab/InC/1.0/ |
Journal: | Journal of physics : D, Applied physics 52 32 |
Pages or article number: | Art. 325001 |
Publisher: | IOP Publ. |
Publisher place: | Bristol |
Issue date: | 2019 |
ISSN: | 0022-3727 1361-6463 |
Publisher URL: | http://dx.doi.org/10.1088/1361-6463/ab2096 |
Publisher DOI: | 10.1088/1361-6463/ab2096 |
Appears in collections: | JGU-Publikationen |