abstract |
The present description relates to an electromagnetic material (13) for an inductance operating at cryogenic temperatures comprising, in an electrically insulating matrix (25), metallic nanoparticles (23) with superparamagnetic behavior of size less than or equal to 30 nm and having a permeability magnetic force greater than or equal to 1.5 for a frequency between 5 GHz and 50 GHz. |