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Magnetoelectric properties of multicomponent elastomersтезисы доклада Тезисы
- Авторы: Komlev A.S., Alekhina Yu A., Makaryin R.A., Malyshkina O.V., Makarova L.A., Perov N.S.
- Сборник: 5th Italian School on Magnetism Book of Absrtacts
- Том: 1
- Тезисы
- Год издания: 2020
- Первая страница: 39
- Последняя страница: 39
- Аннотация: Recently, more and more attention is paid to functional materials, which possess multiferroic properties. This type of material can provide the conversion of one type of energy into another, which reduces energy consumption in various devices. On the other hand, using multiferroics will create new types of power generators. Multiferroic materials with coexistence of at least two ferroic orders (ferroelectric, ferromagnetic, or ferroelastic) attract large interest due to their potential for applications as multifunctional devices (information storage, spintronics and multiple-state memories) [1-2]. Recently the new type of composite multiferroics based on magnetorheological elastomers (MRE) was proposed [3]. Varying the composition of elastomers, which consist of ferromagnetic and ferroelectric particles in an elastic polymer matrix, we can achieve the multiferroic properties in these materials. The coupling mechanism between two different types of particles allows to control the electrical, magnetic, mechanical properties of the sample using external influences. In this work, we study magnetorheological elastomers, which consist of the mixture of uniformly distributed iron particles and lead zirconate-titanate (PZT) in the silicone matrix. Magnetoelectric conversion is carried out due to the elastic interaction between ferromagnetic and ferroelectric particles. To determine the effect of ferroelectric particles on the properties of the composite, we studied the electrical properties of PZT powder and elastomers with different volume contents of PZT. In the presented work the following materials were studied: pure powder PZT, PZT-based elastomers with 54% and 60% mass concentration, Fe+PZT-based elastomers with particle mass ratio 40:60 and total mass concentration 60%. The dielectric parameters of the samples were determined using the Soyer-Tauer technique. The magnitude of the applied electric field was within the range of 2 kV/mm. Magnetic properties were investigated on a vibration sample magnetometer LakeShore 7400 Series in ±16 kOe magnetic field. It was shown that the magnetic field increases the residual polarization of the ferroelectric hysteresis loop for the elastomer based on iron and PZT particles. This fact is explained by the elastic coupling between ferromagnetic and ferroelectric particles. Namely, the ordering of iron particles in uniform external magnetic field leaded to the reorientation of PZT particles. Moreover, in this work, we consider the effect of external stresses on electrical and magnetic properties of the samples. These effects are observed at different frequencies of AC electric field, which allows us to conclude about the role of relaxation processes. The results confirm the prospect of using these materials in energy harvesting devices. Financial Support of RFBR Grants No. 18-32-00354, 18-32-20219 is acknowledged. [1] C. Nan et al., J. Appl. Phys., 103 (2008) 031101 [2] M. Vopson, Critical Reviews in Solid State and Materials Sciences, 40 (2015) 223–250 [3] L. Makarova et al., IEEE Transactions on Magnetics, 99 (2017) 2699740
- Добавил в систему: Комлев Алексей Степанович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | Book-of-Abstracts.pdf | 3,6 МБ | 25 февраля 2020 [AlKomlev] |