Journal article
The properties and structure relationship of half metallic magnetic materials on GaAs
Ultra-fast Optical Communication, Department of Photonics Engineering, Technical University of Denmark1
Department of Photonics Engineering, Technical University of Denmark2
Department of Chemistry, Technical University of Denmark3
Silicon Microtechnology Group, MicroElectroMechanical Systems Section, Department of Micro- and Nanotechnology, Technical University of Denmark4
MicroElectroMechanical Systems Section, Department of Micro- and Nanotechnology, Technical University of Denmark5
Department of Micro- and Nanotechnology, Technical University of Denmark6
Quantum Physics and Information Technology, Department of Physics, Technical University of Denmark7
Department of Physics, Technical University of Denmark8
We report the magnetic and transport properties of two promising half metallic/GaAs hybrid spintronic structures with respect to their structural features. The Co2 MnGa/GaAs(100) has shown a very low magnetic moment which is attributed to the columnar structure and the interface amorphous layer as from the HRTEM images.
The out of plane hysteresis loops have shown a double switching which is related to the interface layer with different magnetic properties. In the Fe3O4/GaAs(100) system, the fast saturation of the magnetization indicates the low antiphase boundaries, which is supported by the HRTEM image.
Furthermore, the moderate barrier height and the heavily damped processional response to the applied field pulses may be related to the interface structure.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2009 |
| Pages: | 4360-4363 |
| ISSN: | 19410069 and 00189464 |
| Types: | Journal article |
| DOI: | 10.1109/TMAG.2009.2024768 |
| ORCIDs: | Damsgaard, Christian Danvad and Hansen, Jørn Bindslev |
Amorphous magnetic materials Amorphous materials Co<sub>2</sub>MnGa-GaAs Gallium arsenide Gallium arsenide (GaAs) Heusler alloys Magnetic hysteresis Magnetic materials Magnetic moments Magnetic properties Magnetic switching Magnetoelectronics Saturation magnetization cobalt alloys gallium alloys gallium arsenide half metallic magnetic materials hybrid spintronic structures interface magnetism magnetic hysteresis magnetic moment magnetic moments magnetic oxides magnetite magnetization manganese alloys molecular-beam epitaxy out of plane hysteresis loops spintronics transmission electron microscopy transport properties ultra-thin films
