Magnetoresistivity and piezoresistivity of magnetoactive elastomers

• Published in: Journal of magnetism and magnetic materials Vol. 587; p. 171313
• Main Authors: Stepanov, G.V., Bakhtiiarov, A.V., Lobanov, D.A., Storozhenko, P.A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2023
• Subjects: Electrical resistivity; Magnetoactive elastomers; Magnetopiezoresistivity; Magnetoresistivity; Magnetorheological elastomers; Piezoresistivity; Tunneling conductivity; Tunneling conductivity; Piezoresistivity; Electrical resistivity; Magnetoresistivity; Magnetopiezoresistivity; Magnetoactive elastomers; Magnetorheological elastomers
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2023.171313

•Magnetoactive elastomer with filled with iron-nickel particles carried out.•Changing its conductivity under the influence of magnetic field and hydrostatic load.•Magnetoactive elastomer is haracterizade the tunneling mechanism of electroconductivity. As a result of a study carried out on the capability of magnetoactive elastomer filled with particles obtained from carbonyl iron and nickel by the mechanochemical method to conduct direct current, there were obtained volt-ampere characteristics corresponding to different magnetic fields. In the whole, it has been demonstrated that such a composite material is capable of changing its conductivity under the influence of magnetic field and hydrostatic load by 5–6 orders of magnitude. The material also exhibits certain features of a semi-conductor which gives some grounds to suppose that electron transfer occurring among the particles might be conditioned by a tunneling mechanism. The possibility to carry out the DC measurements was determined by the good magnetic properties and high electric conductivity of the filling substance. Magnetoactive elastomer of this type is a prospective material for designing sensors for mechanical pressure, magnetic field, and strain.