Increasing magnetic field above the surface in a resonator

[yefj]

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

 

[osilmag]

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