Magnetically Induced Carrier Distribution in a Composite Rod of Piezoelectric Semiconductors and Piezomagnetics

Wang, Guolin; Liu, Jinxi; Feng, Wenjie; Yang, Jiashi

doi:10.3390/ma13143115

Cited by 20 publications

(6 citation statements)

References 52 publications

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“…For a 1D composite rod model, the total axial stress _ σ, electric displacement _ D, and magnetic induction _ B are respectively calculated by [17,21,24] _ σ ¼_ cε À_ eE À _ hH,…”

Section: D Theoretical Modelmentioning

confidence: 99%

Study on Nonlinear Dynamic Responses of the p–n GaN/AlN Heterojunction in Piezoelectric Semiconductor Composite Fibers

Zhang,

Tan,

Wang

et al. 2023

Physica Status Solidi (a)

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In this study, a PN GaN/AlN heterojunction in a piezoelectric semiconductor composite fiber driven by dynamic magnetic loads is studied. The numerical results of nonlinear dynamic responses of a composite PN heterojunction subjected to a time‐harmonic magnetic load and a pulse magnetic load are obtained by the finite element method, respectively. The effect of different magnetic loads on the I‐V curve and piezoelectric behavior of a composite PN heterojunction are investigated. Numerical results show that when driven by uniformly dynamic magnetic loads, the electromechanical fields show a significant asymmetry due to the electric nonlinearity. The time‐harmonic magnetic loads drive the round‐trip motion of electrons and holes, and the dynamic electric behaviors driven by pulsed magnetic loads are nonlinear pulse motions. Further analysis of the PN heterojunction subjected to the bias voltage shows that positive magnetic loads increase the depletion layer’s width but decrease the carrier concentration. The results presented in this study have a referential significance to contactless performance tuning of a PSC heterojunction structure and new‐generation piezotronic devices.This article is protected by copyright. All rights reserved.

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“…For a 1D composite rod model, the total axial stress _ σ, electric displacement _ D, and magnetic induction _ B are respectively calculated by [17,21,24] _ σ ¼_ cε À_ eE À _ hH,…”

Section: D Theoretical Modelmentioning

confidence: 99%

Study on Nonlinear Dynamic Responses of the p–n GaN/AlN Heterojunction in Piezoelectric Semiconductor Composite Fibers

Zhang,

Tan,

Wang

et al. 2023

Physica Status Solidi (a)

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“…,2 𝑥 3 , 𝐽 𝑛 3 = −𝑞𝑛 0 𝜇 𝑛 11 𝜑 (1) + 𝑞𝐷 𝑛 11 𝑛 (1) , (27) where the effective elastic constants for thin plates are…”

Section: Plate Constitutive Relationsmentioning

confidence: 99%

“…When placed in a magnetic field, the piezomagnetic component deforms the device, the deformation induces electric polarization which then drives the mobile charges. Theoretical modeling results have been reported on onedimensional (1-D) structures of composite rods in extension and beams in bending [26][27][28][29][30][31][32]. This paper is concerned with two-dimensional (2-D) composite structures with electromechanical semiconductors and piezomagnetic dielectric films.…”

Section: Introductionmentioning

confidence: 99%

Magnetically‐induced electromechanical fields in a flexoelectric semiconductor layer between two piezomagnetic dielectric layers

Jin

Yang

2022

Z Angew Math Mech

Self Cite

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We study magnetically-induced electromechanical fields in a sandwich plate of a flexoelectric semiconductor layer between two piezomagnetic dielectric layers under a transverse magnetic field. A set of two-dimensional equations for the bending of the plate is derived from the three-dimensional macroscopic theory of piezomagnetics and flexoelectric semiconductors. A few solutions from the plate equations are obtained for static and time-harmonic magnetic loadings. Resultsshow that various distributions of mobile charges and electric fields can be created by different magnetic fields, which is the foundation for flexotronics when magnetic fields are involved. In the case of pure bending under a uniform magnetic field, a combination of physical and geometric parameters is identified as a coefficient characterizing the strength of the interaction between the applied magnetic field and the mobile charges. The coefficient assumes a maximum for a particular thickness ratio between the two types of material layers. The frequency dependence of the coupling coefficient in time-harmonic motions is also obtained.

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“…Recently, for multiferroic composite semiconductor (MCS) rods made of piezomagnetic (PM), piezoelectric, and semiconductor materials, Cheng et al [33] and Kong et al [34] analyzed their piezotronic responses under the applied constant and time-dependent magnetic fields; such a phenomenon of controlling semiconductor properties with a magnetic field is named as the magneto-electro-semiconductor (MES) coupling effect. Subsequently, the tuning of the axial and local transverse magnetic fields on the electrical responses of the sandwiched PM/PS/PM rods through the MES effects was studied [35,36]. Yang et al [37] investigated the coupled bending and extension of a PM/PS bilayer under a transverse magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Bending Analysis of Multiferroic Semiconductor Composite Beam towards Smart Cement-Based Materials

et al. 2023

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A beam-like structure of antisymmetric laminated multiferroic piezoelectric semiconductor (LMPS), which consists of two piezomagnetic (PM) and two piezoelectric semiconductor (PS) layers is proposed. The structure could be in pure flexure deformation under an applied magnetic field. Through this deformation mode and the induced polarization field through the magneto-electro-semiconductive (MES) coupling mechanism, the semiconducting properties of PS layers can be manipulated by the applied magnetic field. In order to better understand and quantitatively describe this deformation mode, the one-dimensional governing equations for the LMPS beam are developed based on the three-dimensional theory. The analytical solutions are then presented for the LMPS cantilever beam with open-circuit conditions. The multi-field coupling responses of the LMPS cantilever beam under the longitudinal magnetic field are investigated. Numerical results show that the amplitude of each physical quantity is proportional to the applied magnetic field, and the thickness ratio of the PS phase plays a significant role in the MES coupling behaviors of the LMPS beam. The proposed structure can be integrated into cement structures but also fabricated cement-based multiferroic PS composite materials and structures. It provides an important material and structure basis for developing structural health monitoring systems in the fields of civil and transportation infrastructures.

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Magnetically Induced Carrier Distribution in a Composite Rod of Piezoelectric Semiconductors and Piezomagnetics

Cited by 20 publications

References 52 publications

Study on Nonlinear Dynamic Responses of the p–n GaN/AlN Heterojunction in Piezoelectric Semiconductor Composite Fibers

Study on Nonlinear Dynamic Responses of the p–n GaN/AlN Heterojunction in Piezoelectric Semiconductor Composite Fibers

Magnetically‐induced electromechanical fields in a flexoelectric semiconductor layer between two piezomagnetic dielectric layers

Bending Analysis of Multiferroic Semiconductor Composite Beam towards Smart Cement-Based Materials

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