Creation of nanoscale magnetic fields using nano-magnet arrays

Sapkota, K. R.; Eley, S.; Bussmann, E.; Harris, C. T.; Maurer, L. N.; Lu, T. M.

doi:10.1063/1.5098768

Creation of nanoscale magnetic fields using nano-magnet arrays

Journal Article · 03 July 2019 · AIP Advances

DOI:https://doi.org/10.1063/1.5098768· OSTI ID:1570221

Sapkota, K. R. ^[1]; Eley, S. ^[2]; Bussmann, E. ^[3]; Harris, C. T. ^[3]; ^[1]; ^[3]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Colorado School of Mines, Golden, CO (United States). Dept. of Physics
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). Center for Integrated Nanotechnologies

In this paper, we present the fabrication of nano-magnet arrays, comprised of two sets of interleaving SmCo₅ and Co nano-magnets, and the subsequent development and implementation of a protocol to program the array to create a one-dimensional rotating magnetic field. We designed the array based on the microstructural and magnetic properties of SmCo₅ films annealed under different conditions, also presented here. Leveraging the extremely high contrast in coercivity between SmCo₅ and Co, we applied a sequence of external magnetic fields to program the nano-magnet arrays into a configuration with alternating polarization, which based on simulations creates a rotating magnetic field in the vicinity of nano-magnets. Our proof-of-concept demonstration shows that complex, nanoscale magnetic fields can be synthesized through coercivity contrast of constituent magnetic materials and carefully designed sequences of programming magnetic fields.

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Research Organization:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1570221

Alternate ID(s):: OSTI ID: 1530907

Report Number(s):: SAND2019-8406J; 677645; TRN: US2001078

Journal Information:: AIP Advances, Vol. 9, Issue 7; ISSN 2158-3226

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

References (19)

Growth of epitaxial SmCo5 films on Cr∕MgO(100) Singh, A.; Neu, V.; Tamm, R. Applied Physics Letters, Vol. 87, Issue 7 https://doi.org/10.1063/1.2011787	journal	August 2005
Tunable magnetic textures: From Majorana bound states to braiding Matos-Abiague, Alex; Shabani, Javad; Kent, Andrew D. Solid State Communications, Vol. 262 https://doi.org/10.1016/j.ssc.2017.06.003	journal	August 2017
Tunable giant magnetic anisotropy in amorphous SmCo thin films Magnus, F.; Moubah, R.; Roos, A. H. Applied Physics Letters, Vol. 102, Issue 16 https://doi.org/10.1063/1.4802908	journal	April 2013
Microelectromagnets for the control of magnetic nanoparticles Lee, C. S.; Lee, H.; Westervelt, R. M. Applied Physics Letters, Vol. 79, Issue 20 https://doi.org/10.1063/1.1419049	journal	November 2001
Nanostructured magnetic nanocomposites as MRI contrast agents Peng, Erwin; Wang, Fenghe; Xue, Jun Min Journal of Materials Chemistry B, Vol. 3, Issue 11 https://doi.org/10.1039/c4tb02023e	journal	January 2015
Modification of magnetic properties in SmCo films by controlling crystallization and phase transition Feng, Chun; Li, Ning; Li, Shuai Science China Physics, Mechanics and Astronomy, Vol. 55, Issue 10 https://doi.org/10.1007/s11433-012-4838-y	journal	July 2012
Chemical synthesis of hard magnetic SmCo nanoparticles Zhang, Hongwang; Peng, Sheng; Rong, Chuan-bing Journal of Materials Chemistry, Vol. 21, Issue 42 https://doi.org/10.1039/c1jm11753j	journal	January 2011
Magnetic properties and underlayer thickness in SmCo/Cr films Romero, S. A.; Cornejo, D. R.; Rhen, F. M. Journal of Applied Physics, Vol. 87, Issue 9 https://doi.org/10.1063/1.372901	journal	May 2000
Handbook of Advanced Magnetic Materials Liu, Yi; Sellmyer, David J.; Shindo, Daisuke https://doi.org/10.1007/b115335	book	January 2006
Hard Magnetic Films of Iron, Cobalt, and Nickel Speliotis, D. E.; Bate, G.; Alstad, J. K. Journal of Applied Physics, Vol. 36, Issue 3 https://doi.org/10.1063/1.1714283	journal	March 1965
Tailoring magnetism at the nanometer scale in SmCo ₅ amorphous films Moubah, Reda; Magnus, Fridrik; Östman, Erik Journal of Physics: Condensed Matter, Vol. 25, Issue 41 https://doi.org/10.1088/0953-8984/25/41/416004	journal	September 2013
Coercivity analysis in sputtered Sm–Co thin films Prados, C.; Hernando, A.; Hadjipanayis, G. C. Journal of Applied Physics, Vol. 85, Issue 8 https://doi.org/10.1063/1.370025	journal	April 1999
Antibiofouling Polymer-Coated Superparamagnetic Iron Oxide Nanoparticles as Potential Magnetic Resonance Contrast Agents for in Vivo Cancer Imaging Lee, Haerim; Lee, Eunhye; Kim, Do Kyung Journal of the American Chemical Society, Vol. 128, Issue 22 https://doi.org/10.1021/ja061529k	journal	June 2006
Hot-deformed Sm–Co/Co composite magnets fabricated from powder blends Gabay, A. M.; Hadjipanayis, G. C.; Marinescu, M. Journal of Applied Physics, Vol. 107, Issue 9 https://doi.org/10.1063/1.3334493	journal	May 2010
Arranging matter by magnetic nanoparticle assemblers Yellen, B. B.; Hovorka, O.; Friedman, G. Proceedings of the National Academy of Sciences, Vol. 102, Issue 25 https://doi.org/10.1073/pnas.0500409102	journal	June 2005
Energy minimization and AC demagnetization in a nanomagnet array Ke, X.; Li, J.; Nisoli, C. arXiv https://doi.org/10.48550/arxiv.0806.3925	text	January 2008
Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures Lutchyn, Roman M.; Sau, Jay D.; Sarma, S. Das arXiv https://doi.org/10.48550/arxiv.1002.4033	text	January 2010
Transition from fractional to Majorana fermions in Rashba nanowires Klinovaja, Jelena; Stano, Peter; Loss, Daniel arXiv https://doi.org/10.48550/arxiv.1207.7322	text	January 2012
Tunable Magnetic Textures: From Majorana Bound States to Braiding Matos-Abiague, Alex; Shabani, Javad; Kent, Andrew D. arXiv https://doi.org/10.48550/arxiv.1704.07737	text	January 2017