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Title: Creation of nanoscale magnetic fields using nano-magnet arrays

Abstract

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.

Authors:
 [1];  [2];  [3];  [3]; ORCiD logo [1]; ORCiD logo [3]
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  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Colorado School of Mines, Golden, CO (United States). Dept. of Physics
  3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). Center for Integrated Nanotechnologies
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1570221
Alternate Identifier(s):
OSTI ID: 1530907
Report Number(s):
SAND2019-8406J
Journal ID: ISSN 2158-3226; 677645; TRN: US2001078
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Accepted Manuscript
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 9; Journal Issue: 7; Journal ID: ISSN 2158-3226
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats

Sapkota, K. R., Eley, S., Bussmann, E., Harris, C. T., Maurer, L. N., and Lu, T. M. Creation of nanoscale magnetic fields using nano-magnet arrays. United States: N. p., 2019. Web. doi:10.1063/1.5098768.
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Sapkota, K. R., Eley, S., Bussmann, E., Harris, C. T., Maurer, L. N., & Lu, T. M. Creation of nanoscale magnetic fields using nano-magnet arrays. United States. https://doi.org/10.1063/1.5098768
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Sapkota, K. R., Eley, S., Bussmann, E., Harris, C. T., Maurer, L. N., and Lu, T. M. Wed . "Creation of nanoscale magnetic fields using nano-magnet arrays". United States. https://doi.org/10.1063/1.5098768. https://www.osti.gov/servlets/purl/1570221.
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@article{osti_1570221,
title = {Creation of nanoscale magnetic fields using nano-magnet arrays},
author = {Sapkota, K. R. and Eley, S. and Bussmann, E. and Harris, C. T. and Maurer, L. N. and Lu, T. M.},
abstractNote = {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.},
doi = {10.1063/1.5098768},
journal = {AIP Advances},
number = 7,
volume = 9,
place = {United States},
year = {2019},
month = {7}
}
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Journal Article:
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https://doi.org/10.1063/1.5098768
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Figures / Tables:

FIG. 1 FIG. 1: XRD spectra of as-deposited and annealed Cr/SmCo5/Cr films.
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Works referenced in this record:

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    Figures / Tables found in this record:

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    FIG. 3 (p. 4)figure
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