Strong magnetodielectric effects in magnetorheological elastomersстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 6 февраля 2014 г.
Аннотация:The effect of a uniform magnetic field on the permittivity of magnetorheological elastomers (MREs) is
studied. MREs were synthesized on the basis of silicone rubber and magnetic fillers of various chemical
nature (Fe, NdFeB and Fe3O4) and particle sizes. The value of permittivity was obtained from the
measurements of the capacity of a plane capacitor with MRE samples. A strong increase of the
permittivity (magnetodielectric effect) was observed when the applied field was perpendicular to
the capacitor plates. The value of the magnetodielectric effect was found to be strongly dependent on
the type of magnetic filler as well as on the size and concentration of magnetic particles within MRE
composites. The highest magnetic response reaching 150% was observed for the MRE based on a
magnetically hard NdFeB filler. A simple model explaining physical reasons for the magnetodielectric
effect in a MRE is proposed. The developed MRE with a strong magnetodielectric effect is very
promising for a wide range of applications, in particular, as magnetic field sensors and actuators.