Neutron Reflectometry Study of Transformer Oil-Based Magnetic Fluid Under Electric Field

Abstract

This paper is focused on characterization of magnetic fluids (MFs) and experimental investigation of interfacial structural changes in transformer oil-based magnetic fluids (TOMFs) under the influence of electric field. Recently, such nanodielectric fluids have been proposed to be used as transformer liquid insulation as the addition of particles seeks to improve the dielectric and thermal properties of the base liquids. Ferrofluids typically respond to electric and magnetic fields and can be easy manipulated by such external fields. By mean of neutron reflectometry (NR), we show impact of the electric field intensity on magnetic nanoparticle aggregates in a dilute (1.8 vol %.) classical ferrofluid.

Keywords

• external fields
• magnetic fluids
• magnetic nanoparticles
• transformer oil-based ferrofluids
• solid-liquid interface
• neutron reflectometry