Investigation of hard magnetic properties in the Fe-Pt system by combinatorial deposition of thin film multilayer libraries |
| |
Authors: | A Ludwig N Zotov S Groudeva-Zotova |
| |
Institution: | a Combinatorial Materials Science Group, Center of Advanced European Studies and Research (Caesar), Ludwig-Erhard-Allee 2, 53175 Bonn, Germany b Institute of Materials, Faculty of Mechanical Engineering, Ruhr-Universität Bochum, 44780 Bochum, Germany |
| |
Abstract: | The magnetic properties of annealed Fe-Pt multilayer thin films with a broad composition range were investigated in order to identify the effects of composition and annealing temperature on the achievable coercive field, and to identify its maximum at low processing temperatures. Two types of multilayer systems were deposited as materials libraries to vary the composition from Fe20Pt80 to Fe75Pt25. The first type of multilayer was comprised of alternating opposing wedges, whereas the second type consisted of repeated uniform Fe and Pt layers interspersed periodically with Fe wedge layers. It was found that coercive fields μ0HC > 0.7 T can be achieved at an annealing temperature of about 300 °C (60 min) for both types of multilayers as long as the composition is close to 50:50. Higher annealing temperatures are needed for films, which deviate from this composition. Increasing the annealing temperature up to 700 °C leads to increased coercivity values. Multilayers with additional Fe layers showed increased remanence but reduced coercive fields. |
| |
Keywords: | 75 70 -i 75 50Bb 81 15Cd |
本文献已被 ScienceDirect 等数据库收录! |
|