Desenvolvimento de um magnetômetro de torque

Abstract

In this work a torque magnetometer was developed for the study of the magnetic anisotropy on magnetic materials. The system which composes the torque magnetometer is constituted basically by a torsional pendulum with an angular position sensor. The experiment consists of suspending a sample with magnetization M in a magnetic field H , generating a torque on the sample. This makes the sample turns in such way that its magnetization tries to line up in a direction determined for the resultant between H and the anisotropy axis. The understanding of the principles that govern the magnetic anisotropy is fundamental so that we can understand the behavior of several other properties that depend on it or of the physics that conduct it.