Increasing magnetic field above the surface in a resonator

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The discussion focuses on the significant drop in magnetic field strength observed in an anapole resonator, decreasing from 2000 A/m to 300 A/m within a height increase of just 0.1 mm. The user is seeking solutions to enhance the magnetic field above the surface of the resonator. Suggestions may include adjusting the resonator's design or materials to optimize magnetic field distribution. The attached video provides a visual reference for the resonator's performance. Enhancing the magnetic field is crucial for improving the resonator's effectiveness.
yefj
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Hello,I have built an anapole resonator described below.
It work almost great but I get a very hard decline in magnetic field from the surface to the height of 0.1mm.
from 2000A/m to 300A/m in just 0.1mm height increase.
is there a way to increase the magnetic field?
Video is attached in the link.

Thanks.
2025-08-31 11-38-20.mkv
1756633392791.webp
1756633282790.webp
1756633234684.webp
1756633150905.webp

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1756632404153.webp
 
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Could there be something in your setup that is causing interference?
 

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