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Smart materials based on magnetorheological mediumтезисы доклада Тезисы
- Авторы: Perov N.S., Alekhina Yu A., Isaev D.A., Khairullin M.F., Kramarenko E.Yu, Makarova L.A., Semisalova A.S., Stepanov G.V.
- Сборник: Book of Abstracts of 3d International Baltic Conference on Magnetism
- Тезисы
- Год издания: 2019
- Первая страница: 22
- Последняя страница: 22
- Аннотация: Magnetorheological materials reveal both elastic/viscous and magnetic properties due to it composite structure. These materials, especially elastomers, are multiferroic due to hysteresis behavior of both magnetic field dependence of magnetization and strain dependence of stress. Magnetorheological elastomers can be easily prepared; the material is flexible and it properties (elastic, deformation, permittivity, etc.) can be tuned by external magnetic field [1-3]. The area of application such smart materials with multiferroic properties are extremely wide and include sensors, autonomous sources of energy, actuators as well as applications in biomedical areas (hyperthermia, manipulators in robotic devices, etc.) [4]. The mechanisms of magnetization, magnetodielectric effect, magnetoelectric transformation and other physical properties of composite rheological materials based on ferromagnetic and/or ferroelectric micro-fillers were investigated in the work. It is shown that rotation, relative displacement and moving of particles in magnetic elastomers under external loads have a significant effect on their magnetic, mechanical and electrical properties. It was found that in the crossed DC and AC magnetic fields the frequency resonance of the nondiagonal components of complex permeability of elastomers is detected. The change in the dielectric constant of magnetic elastomers in an external magnetic field depends on the aggregation state of the polymer matrix and can exceed 40%/kOe under external mechanical stresses. Also new threecomponent multiferroic material based on polymer and a mixture of ferromagnetic (NdFeB or iron microparticles) and ferroelectric (PZT particles) fillers was developed; the static magnetoelectric transformation coefficient was up to 730 mV/cm·Oe [5]. Based on magnetorheological and electrorheological elastomers different spatially structured composites were developed. It was shown inverse magnetodeformation and magnetoelectric effect can be improved in the composites.
- Добавил в систему: Макарова Людмила Александровна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | IBCM-2019_Perov_Abstract.pdf | 15,6 МБ | 27 августа 2019 [LAMakarova] |