Abstract
The magnetization reversal process for elliptical and rectangular permendur (CoFe) nanostructures were compared using micromagnetic simulations. Single domain states were observed in 10 nm thick elliptical and rectangular nanomagnets. The magnetization reversal along the major and minor axis in 60 nm thick elliptical nanomagnets occurred through the formation of double vortex states. In rectangular nanomagnets, it occurred through the formation of single vortex state along 225 nm and double vortex state along 335 nm.
Similar content being viewed by others
References
B. D. Terris, T. Thomson, J. Phys. D: Appl. Phys. 38 (2005) R199.
J. G. Zhu, Y. F. Zheng, G. A. Prinz, J. Appl. Phys. 87 (2000) 6668.
J. Akerman, Science 308 (2005) 508.
D. A. Allwood, G. Xiong, C. C. Faulkner, D. Atkinson, D. Petit, R. P. Cowburn, Science 309 (2005) 1688.
N. M. Vargas, S. Allende, B. Leighton, J. Escrig, J. Mejía-López, D. Altbir, I. K. Schuller, J. Appl. Phys. 109 (2011) 073907.
M. Hosomi, H. Yamagishi, T. Yamamoto, K. Bessho, Y. Higo, K. Yamane, H. Yamada, M. Shoji, H. Hachino, C. Fukumoto, Electron Devices Meeting, 2005. IEDM Technical Digest. IEEE International p. 459 (2005).
S. S. P. Parkin, M. Hayashi, and L. Thomas, Science 320, 190 (2008).
S. Jeong, Y. N. Hsu, D. E. Laughlin, M. E. McHenry, IEEE Trans. Magn. 36 (2002) 2336.
F. Carace, P. Vavassori, G. Gubbiotti, S. Tacchi, M. Madami, G. Carlotti, T. Okuno, Thin solid Films 515 (2006) 727–730.
K. K. M. Pandey, J S Chen, J F Hu and G M Chow, J. Phys. D: Appl. Phys. 42 (2009) 015009.
V. S. N. Murthy, C. Krishnamoorthi, R. Mahendiran, and A. O. Adeyeye, J. Appl. Phys. 105, (2009) 023916.
G. Shimon, A. O. Adeyeye and C. A. Ross, J. Appl. Phys. 111 (2012) 013909.
G. Shimon, A. O. Adeyeye, and C. A. Ross, Phys. Rev. B 89 (2014) 024302.
R. Morales, A. C. Basaran, J. E. Villegas, D. Navas, N. Soriano, B. Mora, C. Redondo, X. Batlle, and I. K. Schuller, Phys. Rev. Lett. 114 (2015) 097202.
D. M. Burn, M. Chadha, and W. R. Branford, Phys. Rev. B 92 (2015) 214425.
P. Lupo, Z. Haghshenasfard, M. G. Cottam, and A. O. Adeyeye, Phys. Rev. B 94 (2016) 214431.
M. J. Donahue and D. G. Porter, OOMMF user’s guide, version 1.0. interagency report NISTIR 6376, National institute of standards and technology, Gaithersburg, MD, 1999. http://math.nist.gov/oommf/doc/userguide12a3/userguide/Credits.html. Accessed 25 Jan 2017.
E. C. Stoner, E. P. Wohlfarth, Philos. Trans. R. Soc. A 240 (1948) 559.
P. Vavassori, N.Zaluzec, V. Metlushko, V. Novosad, B. Ilic and M. Grimsditch, Phy. Rev. B 69 (2004) 214404.
N. V. S. S.Seshagirirao, V. S. N. Murthy and Y. J. V. S. Ramakrishna Sharma, Bull. Mater. Sci. 393 (2016) 725.
M. F. Lai, Z. H. Wei, J. C. Wu, C. R. Chang, W. Z. Hsieh and J. Y. Lai, IEEE Trans. Magn. 41 (2005) 944.
A. Fernandez and C. J. Cerjan, J. Appl. Phys. 87 (2000) 1395.
Z. -H. Wei, C.-R. Chang, N. A. Usov, M. -F. Lai and J. C. Wu, J. Magm. Magn. Matter. 95 (2002) 1.
Acknowledgements
One of the author N. V. S. S. Seshagiri Rao acknowledges BITS Pilani, Hyderabad Campus for financial support to carry out the above work.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Seshagiri Rao, N.V.S.S., Murthy, V.S.N. Comparative Study of Magnetization Reversal Process Between Elliptical and Rectangular CoFe Nanomagnets. Trans Indian Inst Met 70, 567–572 (2017). https://doi.org/10.1007/s12666-017-1050-9
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12666-017-1050-9