Nanotech 2005 Vol. 2
Nanotech 2005 Vol. 2
Technical Proceedings of the 2005 NSTI Nanotechnology Conference and Trade Show, Volume 2

Characterization Tools and Microscopy Chapter 11

Theoretical and Experimental Study of Synthetic MFM Tips

Authors: Y.H. Wu, G. Han and Y.K. Zheng

Affilation: National University of Singapore, Singapore

Pages: 715 - 718

Keywords: MFM tips, synthetic structure, point-dipole response

Recently, we have developed a synthetic MFM tip consisting of two ferromagnetic layers and a non-magnetic spacer [1]. The two ferromagnetic layers are coupled antiferromagnetically so that the MFM works in a differential detection mode. This has led to the enhancement of high-frequency component against the lower frequency counterpart. Experimentally we have also found that the synthetic tip functions as a point-dipole tip. In this paper, we will present a detailed theoretical analysis of the tip and compare the results with experimental data. The effect of spacer thickness on the imaging characteristics of the MFM tip will also be discussed. [1] Y. H. Wu et al, Appl. Phys. Lett. 82, 1748-1750 (2003).

ISBN: 0-9767985-1-4
Pages: 808
Hardcopy: $109.95