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Atomically Traceable Nanostructure Fabrication
Published on: July 17, 2015
Fabrication of CoPt ultra-sharp single atom tips.
Tsu-Yi Fu1, Chia-Lun Chiang, Rung-Jiun Lin
1Department of Physics, National Taiwan Normal University, Taipei 116, Taiwan.
Journal of Nanoscience and Nanotechnology
|March 14, 2012
Summary
New nano tips were fabricated for magnetic applications. Researchers investigated the atomic structures of PtCo alloy and Pt-based Co tips using ultra-high vacuum-field ion microscopy.
Area of Science:
- Materials Science
- Nanotechnology
- Physics
Background:
- Nano tips are crucial for high-resolution imaging and magnetic applications.
- Developing novel nano tip structures is essential for advancing nanoscale technologies.
Purpose of the Study:
- To fabricate and characterize two novel nano tip structures for potential magnetic applications.
- To investigate the atomic-level structural properties of the tip apex after fabrication and sharpening treatments.
Main Methods:
- Fabrication of a PtCo alloy pyramidal tip via surface faceting.
- Fabrication of a Pt-based Co tip using epitaxy with controlled growth modes.
- Atomic resolution investigation using ultra-high vacuum-field ion microscopy (UHV-FIM).
Main Results:
- Successfully fabricated two distinct types of nano tips with potential for magnetic applications.
- Characterized the atomic structures of the tip apex for both PtCo alloy and Pt-based Co tips.
- Analyzed the effects of various sharpening treatments on the nano tip apex structures.
Conclusions:
- The fabricated nano tips demonstrate potential for advanced magnetic applications.
- UHV-FIM provides critical atomic-level insights into nano tip apex structures.
- The study contributes to the development of next-generation nanoscale magnetic devices.
