Magnetic Anisotropy: Basics and Applications

This lecture covers the fundamental concepts of magnetic anisotropy, including the exchange interaction, hysteretic behavior of magnetization, and various types of anisotropy in magnetic materials. It explains how anisotropy affects the functionality and temperature dependence of hard-magnetic materials, with examples ranging from bcc Fe to SmCos. The lecture also delves into the temperature dependencies of anisotropy constants and the anisotropy field. Furthermore, it explores the impact of demagnetization on anisotropy and the determination of an easy axis in magnetic materials.