Magnetic properties of silicon dioxide from rice straw. Issue 1 (May 2021) - Har, Nazopatul P.
Abstract: Silicon dioxide (SiO2) from rice straw is one of the alternatives used to replace silicon dioxide from natural minerals. In this study, an analysis related to the magnetic properties. The method is carried out by measuring the sample of silicon dioxide that has been extracted from rice straw with varying concentration of HCl (3%, 5%, 7%) using an LCR-meter. Analysis of the electrical and magnetic properties of silicon dioxide using LCR-meter with a frequency range of 50Hz – 5MHz, alternating current voltage of 1V, and alternating current of 50 mA, data collection points 200 point for 7 min (420 sec), the average time is 2.1 sec per data. The results of the analysis of magnetic properties showed that the value of Vicinity Magnetic Induction (VMI) calculated on silicon dioxide samples from rice straw with order 10 −5 -10 −4 tesla and magnetic flux values was calculated on samples with order 10 2 -10 4 Wb on all variations of HCl concentrations. Application of magnetic properties in the form of Vicinity Magnetic Induction (VMI) and magnetic flux of silicon dioxide from rice straw is the forerunner as a magnetic sensor.