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Magnetic Force Microscopy of Nanostructured Co/Pt Multilayer Films with Perpendicular Magnetization
O L Ermolaeva1, N S Gusev2, E V Skorohodov3
1Institute for Physics of Microstructures RAS, GSP-105, 603950 Nizhny Novgorod, Russia. ermolaeva@ipmras.ru.
Materials (Basel, Switzerland)
|September 6, 2017
Summary
We explored magnetic domain structures in cobalt/platinum thin films. Modifying these films with cobalt capping layers and ion irradiation created magnetic bubbles, showing potential for data storage applications.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Nanotechnology
Background:
- Multilayer thin films like cobalt/platinum (Co/Pt) are crucial for magnetic data storage.
- Understanding and controlling magnetic domain structures is key to improving device performance.
Purpose of the Study:
- To investigate the effects of cobalt capping layers and ion irradiation on the magnetic domain structure of [Co/Pt]₅ thin films.
- To explore the potential of engineered magnetic structures for advanced data storage and logic applications.
Main Methods:
- Magnetic Force Microscopy (MFM) was used to analyze domain structures.
- Focused Helium Ion (He⁺) beam irradiation was employed for localized modification.
- Co/Pt multilayer thin films with varying modifications were fabricated and studied.
Main Results:
- A cobalt capping layer altered the domain structure and reduced magnetization reversal thresholds.
- Ion irradiation induced regions of decreased anisotropy, forming magnetic bubbles with inverse magnetization.
- These magnetic bubbles could be manipulated using an MFM probe.
Conclusions:
- Cobalt capping and ion irradiation offer effective methods to tailor magnetic properties of Co/Pt thin films.
- Engineered magnetic bubbles demonstrate potential for novel magnetic logic and data storage devices.
- The study highlights pathways for developing next-generation magnetic memory technologies.
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