Construction of an electromagnet for the development of a vibrating sample magnetometer

The Vibrating Sample Magnetometer (VSM) is a machine that measures the magnetic moment and magnetic susceptibility of materials when they are vibrating perpendicular to a uniform magnetic field. Commercial VSM are highly costly and the simplest ones only produce magnetic fields up to 0.7 Tesla. However, they still require big magnets for the electromagnet core with its huge power supply and their refrigeration system. This thesis project presents the design, construction and calibration of a low cost electromagnet with its power supply that provides values of magnetic field up to 0.5 Tesla. This electromagnet fulfills the requirements to develop a VSM for an undergraduate laboratory. The characterization of soft magnetic materials demands an adequate VSM magnetic field that is generated from the electromagnet and its power supply. The final result of this thesis project shows the different configurations of measurement to produce different values of magnetic field. These configurations of measurement are divided into up current and down current. The up current configuration shows values from 36 mT to 496 mT. The down current configuration shows values from 557 mT to 32 mT. The front panel of the power supply has a selector switch which has 18 paper sheet brass fasteners connected to 18 output lines from nine transformers. Thus, there is a total of 36 values of magnetic field (18 for up current and 18 for down current) for the magnetization measurement of the sample material.

• المؤلف الرئيسي: Piedra Marin, Luis Eduardo (author)
• التنسيق: bachelorThesis
• اللغة: eng
• منشور في: 2020
• الموضوعات: VSM; Electromagnet; Power supply; Tesla; Magnetic field; Soft magnetic materials; Electroimán; Fuente de alimentación; Campo magnético; Materiales magnéticos blandos
• الوصول للمادة أونلاين: http://repositorio.yachaytech.edu.ec/handle/123456789/235