Journals >Journal of Advanced Dielectrics
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2023
Volume: 13 Issue 6
9 Article(s)
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Research Articles
Structures, dielectric properties and AC impedance characteristics of BiFeO3–BaTiO3 high-temperature lead-free piezoceramics synthesized by the hydrothermal method
Shuangchi Li, Fang Wang, Lanxin Tang, Daniel Q. Tan, and Yu Chen
Among the lead-free piezoceramics, (1−x)BiFeO3−xBaTiO3 (BF-BT) is considered a promising candidate for high-temperature piezoelectric materials owing to its high Curie temperature (TC>400∘C) and good electromechanical properties. In this work, the hydrothermal synthesis method was used to prepare the precursor powdeAmong the lead-free piezoceramics, (
Journal of Advanced Dielectrics
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 6, 2340006 (2023)
Out-of-plane photoconductive and bulk photovoltaic effects in two-dimensional
Dan Qiu, Jianing He, Shiwen Tan, and Pengfei Hou
Two-dimensional α-In2Se3 exhibits simultaneous intercorrelated in-plane and out-of-plane polarization, making it a highly promising material for use in memories, synapses, sensors, detectors, and optoelectronic devices. With its narrow bandgap, α-In2Se3 is particularly attractive for applications in photodetection. HowTwo-dimensional
Journal of Advanced Dielectrics
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 6, 2345001 (2023)
Analysis of multi-center topological domain states in BiFeO3 nanodot arrays
Zhongwen Li, Siyi Zhang, Qingsheng Li, and Hao Liu
High-density ferroelectric BiFeO3 (BFO) nanodot arrays were developed through template-assisted tailoring of epitaxial thin films. By combining piezoresponse force microscopy (PFM) and Kelvin probe force microscopy (KPFM) imaging techniques, we found that oxygen vacancies in nanodot arrays can be transported in the preHigh-density ferroelectric BiFeO3 (BFO) nanodot arrays were developed through template-assisted tailoring of epitaxial thin films. By combining piezoresponse force microscopy (PFM) and Kelvin probe force microscopy (KPFM) imaging techniques, we found that oxygen vacancies in nanodot arrays can be transported in the presence of an electric field. Besides triple-center domains, quadruple-center domains with different vertical polarizations were also identified. This was confirmed by combining the measurements of the domain switching and polarization vector distribution. The competition between the accumulation of mobile charges, such as oxygen vacancies, on the interface and the geometric constraints of nanodots led to the formation of these topological domain states. These abnormal multi-center topological defect states pave the way for improving the storage density of ferroelectric memory devices..
Journal of Advanced Dielectrics
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 6, 2345002 (2023)
Bubble domain evolution in well-ordered BiFeO3 nanocapacitors
Fengyuan Zhang, Guo Tian, Lina Zhao, Xingsen Gao, and Jiangyu Li
Ferroelectric nanocapacitors have attracted intensive research interest due to their novel functionalities and potential application in nanodevices. However, due to the lack of knowledge of domain evolution in isolated nanocapacitors, precise manipulation of topological domain switching in the nanocapacitor is still a Ferroelectric nanocapacitors have attracted intensive research interest due to their novel functionalities and potential application in nanodevices. However, due to the lack of knowledge of domain evolution in isolated nanocapacitors, precise manipulation of topological domain switching in the nanocapacitor is still a challenge. Here, we report unique bubble and cylindrical domains in the well-ordered BiFeO3 nanocapacitor array. The transformation of bubble, cylindrical and mono domains in isolated ferroelectric nanocapacitor has been demonstrated via scanning probe microscopy (SPM). The bubble domain can be erased to mono domain or written to cylindrical domain and mono domain by positive and negative voltage, respectively. Additionally, the domain evolution rules, which are mainly affected by the depolarization field, have been observed in the nanocapacitors with different domain structures. This work will be helpful in understanding the domain evolution in ferroelectric nanocapacitors and providing guidance on the manipulation of nanoscale topological domains..
Journal of Advanced Dielectrics
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 6, 2345003 (2023)
Enhanced optoelectronic characteristics of MoS2-based photodetectors through hybridization with CdS
Aimin Liu, Jiyu Zhao, Qiuhong Tan, Peizhi Yang, Yingkai Liu, and Qianjin Wang
Monolayer molybdenum disulfide (MoS2) has weak light absorption due to its atomically-thin thickness, thus hindering the development of MoS2-based optoelectronic devices. CdSxSe1−x has excellent photoelectric performance in the visible light range, and its nanostructure shows great potential in new nanoscale electronicMonolayer molybdenum disulfide (MoS2) has weak light absorption due to its atomically-thin thickness, thus hindering the development of MoS2-based optoelectronic devices. CdSxSe
Journal of Advanced Dielectrics
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 6, 2345004 (2023)
Investigation of lead-free BiFeO3–BaTiO3 piezoelectric ceramics through precise composition control
Hailan Qin, Jianwei Zhao, Xiaoxin Chen, Hongtian Li, Shenghao Wang, Yuxiao Du, Peifeng Li, Huanfu Zhou, and Dawei Wang
BiFeO3–BaTiO3 is a promising lead-free piezoelectric ceramic, exhibiting high Curie temperature and superior electrochemical characteristics. In this work, (1−x)BiFeO3–xBaTiO3 (BF–xBT, x=0.26, 0.28, 0.30, 0.32, 0.34, 0.36) ceramics were fabricated using the conventional solid-state reaction method through precise compoBiFeO3–BaTiO3 is a promising lead-free piezoelectric ceramic, exhibiting high Curie temperature and superior electrochemical characteristics. In this work,
Journal of Advanced Dielectrics
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 6, 2350018 (2023)
Energy storage and relaxor behavior in (Pb
A. Peláiz-Barranco, Y. Pérez-Martín, O. García-Zaldívar, and Y. Gagou
(Pb0.8Ba0.2)[(Zn1/3Nb2/3)0.7Ti0.3]O3 relaxor-type ferroelectric ceramics was obtained via classical solid-state reaction. The hysteresis loop results were discussed in the frame of ergodicity criterium around the characteristic ferroelectric relaxor freezing temperature. Slimer hysteresis loops were observed below the (Pb
Journal of Advanced Dielectrics
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 6, 2350019 (2023)
Creation of periodical domain structure by local polarization reversal in planar waveguide produced by soft proton exchange in LiNbO3
Evgeniy Savelyev, Andrey Akhmatkhanov, Boris Slautin, Hervé Tronche, Florent Doutre, Tommaso Lunghi, Pascal Baldi, and Vladimir Shur
The paper presents the results of an experimental study of the local polarization reversal and creation of domains by a biased tip of scanning probe microscope (SPM) in lithium niobate single crystals of congruent composition with a surface layer modified by soft proton exchange (SPE). The depth dependence of H+ ions cThe paper presents the results of an experimental study of the local polarization reversal and creation of domains by a biased tip of scanning probe microscope (SPM) in lithium niobate single crystals of congruent composition with a surface layer modified by soft proton exchange (SPE). The depth dependence of H
Journal of Advanced Dielectrics
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 6, 2350020 (2023)
Author Index (Volume 13)
Journal of Advanced Dielectrics
- Publication Date: Jan. 01, 1900
- Vol. 13, Issue 6, 2399001 (2023)
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