%0 Journal Article
%T A Practical and Automated Hall Magnetometer for Characterization of Magnetic Materials
%A Jefferson F. D. F. Araujo
%A Joao M. B. Pereira
%J Modern Instrumentation
%P 43-53
%@ 2165-9273
%D 2015
%I Scientific Research Publishing
%R 10.4236/mi.2015.44005
%X A versatile Hall magnetometer has been developed, manufactured, calibrated, and turned operational for measurements of the magnetic properties of bulk materials and magnetic micro- and nanoparticles. The magnetometer was constructed from the combination of various equipments, which was usually available in most laboratories, such as a Hall effect sensor, an electromagnet, a current source, and a linear actuator. The achieved sensitivity to the magnetic moment was approximately 10<sup>-8</sup> Am<sup>2</sup>. The results were compared to measurements performed with commercial vibrating-sample magnetometers and superconductor quantum interference devices (SQUID) and showed errors of around 1.7% and a standard deviation of 1.2% in relation to measures themselves. The constructed Hall magnetometer records a magnetic hysteresis loop of up to 1.2 T at room temperature. This magnetometer is cost-effective, versatile, and suitable for research.
%K Practical Magnetometer
%K Hall Sensor
%K Characterization of Magnetic Materials
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=60022