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.
Hysteresis loops of magnetite (a) and strontium hexaferrite (b) particles. Insets in the right part of the main graphs show primary magnetization curves; inset in the left part of graph (b) shows primary magnetization curves of both types of particles in the small fields of interest for sensor applications.
