Journals >Journal of Advanced Dielectrics
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2024
Volume: 14 Issue 2
8 Article(s)
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Research Articles
A comparative study on rigid and flexible magnetoelectric composites: Review
Vaishnavi Khade, and Madhuri Wuppulluri
This review reports the latest trends in the ceramic composite matrix used for the magnetoelectric (ME) effect. In the last few years, ME composite has become the center of attraction for use in various electrically and magnetically coupled devices. The growth and use of electronic components everywhere have propulsiveThis review reports the latest trends in the ceramic composite matrix used for the magnetoelectric (ME) effect. In the last few years, ME composite has become the center of attraction for use in various electrically and magnetically coupled devices. The growth and use of electronic components everywhere have propulsively accelerated the exploration of self-powered electronic and sensor network devices. ME is a feasible technique for addressing difficulties of traditional batteries such as short life span and frequent recharge difficulties. Self-charging multiferroic components have been found for the constant working of mobile electronics that use multiferroic composites in response to magnetoelectric energy transformation. Researchers have rigorously studied the rigid and flexible magnetoelectric composites for their suitability in applications. This paper gives a comparative study between rigid and flexible magnetoelectric composites based on their properties and provides knowledge about the materials for such types of composites. It reviews the latest polymer-based ME materials as well as the related fabrication and polarization methods. The review finally encapsulates the applications in biomedicine, ranging from mechanical energy harvesters to sensors and actuators..
Journal of Advanced Dielectrics
- Publication Date: May. 24, 2024
- Vol. 14, Issue 2, 2340001 (2024)
Designing high piezoelectric properties at the BaTiO3–PbZrO3–PbTiO3 phase boundary by Landau–Devonshire theory
Yu Song, Xiaoming Shi, Dan Li, Jing Wang, and Houbing Huang
Ferroelectric materials possessing exceptional piezoelectric attributes have garnered widespread utilization in various applications. Solid solution systems improve piezoelectric properties through multiphase mixing, but the methodologies for effective design remain wanting. Based on the Landau–Devonshire theory, we prFerroelectric materials possessing exceptional piezoelectric attributes have garnered widespread utilization in various applications. Solid solution systems improve piezoelectric properties through multiphase mixing, but the methodologies for effective design remain wanting. Based on the Landau–Devonshire theory, we propose a theoretical design method. Binary materials with morphotropic phase boundary (MPB) compositions are added with new elements to increase the free energy of the original stabilized phase and lower the energy barrier (EB). Flatter EBsand higher piezoelectric coefficients are found at the phase boundaries of the ternary system. By calculating the phase diagram, piezoelectric coefficient, dielectric constant, polarization, and EBs, we reveal the origin of the highest piezoelectric coefficient at the phase boundaries. This study underscores the importance of the EBs for polarization rotation in characterizing piezoelectric properties and proposes a theoretical design method for exploring materials with high piezoelectric coefficients..
Journal of Advanced Dielectrics
- Publication Date: May. 24, 2024
- Vol. 14, Issue 2, 2340002 (2024)
Preparation and improved energy storage capability of nanocomposites utilizing ultrathin 2D HfO2@TiO2 nanosheets
Chao Chen, Chen Guo, Xiaoyong Wei, and Pengfei Wang
Polymer-based dielectrics play an important role in electrostatic capacitor by their high energy density (Ue) and flexibility. Herein, we designed a simple high Ue polymer-based dielectrics by controlling the morphology and surface modification of inorganic fillers. To decrease the difference in dielectric properties bPolymer-based dielectrics play an important role in electrostatic capacitor by their high energy density (
Journal of Advanced Dielectrics
- Publication Date: May. 24, 2024
- Vol. 14, Issue 2, 2340003 (2024)
Phase-field simulations of topological conservation in multi-vortex induced by surface charge in BiFeO3 thin films
Mengyuan Wang, Di Liu, Jing Wang, Deshan Liang, and Houbing Huang
The creations and manipulations of vortexes in ferroelectric materials with external stimuli are expected to be used in the design and fabrication of sensing materials and multifunctional electronic devices. In this work, we investigated the surface charge-induced multi-vortex evolution using the phase-field simulationThe creations and manipulations of vortexes in ferroelectric materials with external stimuli are expected to be used in the design and fabrication of sensing materials and multifunctional electronic devices. In this work, we investigated the surface charge-induced multi-vortex evolution using the phase-field simulations in BiFeO3. A combination of domain morphology, polarization distribution and winding number calculation was considered. The results show that vortex and anti-vortex exist simultaneously in pairs, and the total value of winding numbers is always 0. In addition, the minimum distance
Journal of Advanced Dielectrics
- Publication Date: May. 24, 2024
- Vol. 14, Issue 2, 2343002 (2024)
Domain patterning in nonpolar cut PMN–PT by focused ion beam
Elena Pashnina, Dmitry Chezganov, Alla Slautina, Anton Turygin... and Vladimir Shur|Show fewer author(s)
The formation of the ferroelectric domain structure as a result of irradiation by focused ion beam of [100]-cut 0.61Pb(Mg1∕3Nb2∕3)O3–0.39PbTiO3 (PMN–PT) single crystals covered by surface artificial dielectric layer and with free surface was investigated. The dot irradiation resulted in formation of the wedge-like domaThe formation of the ferroelectric domain structure as a result of irradiation by focused ion beam of [100]-cut 0.61Pb(Mg
Journal of Advanced Dielectrics
- Publication Date: May. 24, 2024
- Vol. 14, Issue 2, 2350024 (2024)
Effect of annealing conditions on surface morphology and ferroelectric domain structures of BiFeO3 thin films
Minchuan Liang, Jia Yang, Huayu Yang, Chen Liang... and Jing Wang|Show fewer author(s)
Ferroelectric materials are widely used in the applications of electronic devices due to their robust spontaneous polarization. The surface roughness of ferroelectric thin films, which is closely related to the morphology, can play an important role in determining the ferroelectric domain structures. In this work, we hFerroelectric materials are widely used in the applications of electronic devices due to their robust spontaneous polarization. The surface roughness of ferroelectric thin films, which is closely related to the morphology, can play an important role in determining the ferroelectric domain structures. In this work, we have investigated the influence of annealing conditions on the surface morphology of epitaxial BiFeO3 and SrRuO3 thin films prepared by pulsed laser deposition on SrTiO3 (001) substrates. It is found that the morphology of the thin films is sensitive to the annealing time and cooling rate, and the corresponding surface roughness decreases with increasing annealing time and decreasing cooling rate. In addition, the ferroelectric domain structures of BiFeO3 films have been investigated by piezoelectric force microscopy, which shows a significant improvement in domain size and reverse piezoelectric response in the thin films with decreasing surface roughness. This work provides a simple way to predict and improve the ferroelectric domain structures by in situ annealing..
Journal of Advanced Dielectrics
- Publication Date: May. 24, 2024
- Vol. 14, Issue 2, 2440002 (2024)
Ferroelastic domain engineering in layered-perovskite Bi2WO6 thin films by post-annealing
Jia Yang, Minchuan Liang, Huayu Yang, Hui Ai... and Jing Wang|Show fewer author(s)
Due to the strong magneto-elastic coupling in ferromagnetic/ferroelectric heterostructures and the potential applications in low-power magnetoelectric nanodevices, ferroelastic domains and the corresponding dynamic evolution under external stimuli have attracted intense research interest. Using pulsed laser deposition Due to the strong magneto-elastic coupling in ferromagnetic/ferroelectric heterostructures and the potential applications in low-power magnetoelectric nanodevices, ferroelastic domains and the corresponding dynamic evolution under external stimuli have attracted intense research interest. Using pulsed laser deposition method, we have successfully grown layered-perovskite Bi2WO6 thin films on SrTiO3 (001) substrates. Interestingly, for the as-grown thin films with step-flow morphology, the relationship between ferroelastic domain number and size shows a normal distribution, which is similar to the Boltzman distribution for confined gas molecules at equilibrium. In addition, with post-annealing, the thin films with as-grown island-like morphology can be optimized for layered morphology, and the initial small ferroelastic domains can grow into large domains. This study provides an effective strategy for ferroelastic domain engineering, which can be applied for the design of multiferroic heterostructures and low-power nanodevices..
Journal of Advanced Dielectrics
- Publication Date: May. 24, 2024
- Vol. 14, Issue 2, 2440004 (2024)
Frequency-dependent ferroelectric and electrocaloric properties in barium titanate-based ceramics based on Maxwell relations
Wanting Shu, Hong Li, Yanli Huang, Cong Lin... and Chunlin Zhao|Show fewer author(s)
In this work, the frequency dependence of ferroelectric and electrocaloric properties in barium titanate-based ceramics was studied based on Maxwell relations. It is found that the maximum and remnant polarization will decrease while the coercive field increases a lot with rising frequency from 0.1 to 10Hz, indicating In this work, the frequency dependence of ferroelectric and electrocaloric properties in barium titanate-based ceramics was studied based on Maxwell relations. It is found that the maximum and remnant polarization will decrease while the coercive field increases a lot with rising frequency from 0.1 to 10
Journal of Advanced Dielectrics
- Publication Date: May. 24, 2024
- Vol. 14, Issue 2, 2440008 (2024)
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