Magnetic field intensity effect on electrical conductivity of magnetorheological biosuspensions based on honey, turmeric and carbonyl iron

Abstract

Magnetorheological biosuspensions (MRSs) are prepared using honey (HB), turmeric powder (nT) and carbonyl iron (CI) microparticles at various concentrations. By impregnating a cotton fabric with MRSs and compressing the whole system between two copper plates, a magnetoresistor (MRs) is obtained. The resistance R and electrical conductivity σ of MRs are measured as a function of time t for various values of magnetic field intensity H. We show that σ increases with H and is sensibly influenced by the volume fraction ΦCI of carbonyl iron. For fixed ΦCI and H, we show that σ increases with concentration ΦnT of turmeric powder.