Design and development of a fully automated experimental setup for in situ temperature dependent magneto-dielectric measurements

Abstract

In this study, the design and development of a low cost and fully automated in situ temperature dependent magneto-dielectric experimental setup has been reported. The setup has been designed to measure the effect of magnetic field on the dielectric constant of the material as a function of frequency and temperature. Measurements can be carried out over a temperature range from 120 K to 350 K, frequency range from 20 Hz to 5 MHz, and maximum magnetic field up to 2.2 Tesla. To monitor the measurement online a computer controlled graphical user interface (GUI) has also been developed based on QT C + + creator, an open source platform. The magneto-dielectric effect has been demonstrated in GaFeO3, LaFe0.3Ga0.7O3, and YFeO3 samples. The developed magneto-dielectric measurement setup will provide a platform to understand the physics of magneto-dielectric and multiferroic materials under the influence of the magnetic field at different frequencies and temperatures. © 2019 IOP Publishing Ltd.