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.

View Accepted Manuscript (DOE)

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

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1570221

Alternate ID(s):: OSTI ID: 1530907

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

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

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

Country of Publication:: United States

Language:: English

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