期刊
AIP ADVANCES
卷 9, 期 7, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5098768
关键词
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资金
- Laboratory Directed Research and Development Program at Sandia National Laboratories (SNL)
- U.S. Department of Energy's National Nuclear Security Administration [DE-NA0003525]
- US DOE, Office of Science, Basic Energy Sciences, Division of Materials Sciences and Engineering
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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