Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Relationship between geometric permeability μgeo and measured permeability μL in nanocrystalline rectangular cores with two air gaps. The total air gap length lg was taken equal to (ls + lo), where ls is the spacer thickness, and lo is the residual air gap length. The dashed line corresponds to equation μgeo= μL.
