Article
Chemistry, Multidisciplinary
Haribabu Palneedi, Deepak Rajaram Patil, Shashank Priya, Kyoohee Woo, Jiwon Ye, Yu Mi Woo, Yun Sik Hwang, Geon-Tae Hwang, Jung Hwan Park, Jungho Ryu
Summary: ME film composites consisting of PZT thick films on amorphous Metglas substrates are fabricated using aerosol deposition and intense pulsed light (IPL) annealing. The optimized IPL treatment enhances the crystallinity and improves the dielectric, piezoelectric, and ME properties of the composite films. The resulting PZT/Metglas film exhibits an ultrahigh off-resonance ME coupling, confirming its potential for next-generation high-performance ME devices.
ADVANCED MATERIALS
(2023)
Article
Engineering, Multidisciplinary
Caijiang Lu, Renren Zhu, Feihu Yu, Xueling Jiang, Zixuan Liu, Longfei Dong, Qiang Hua, Zhengyu Ou
Summary: This paper presents a gear rotational speed sensor utilizing a FeCoSiB/Pb(Zr,Ti)O-3 magnetoelectric composite, which demonstrates high sensitivity and near-linear detection of rotational speed. The sensor shows a sensitivity of 0.9951 at frequencies within the range of 10-600 rpm and 1.15 mV/rpm in terms of output voltage in the range of 10-150 rpm, indicating promising application prospects in gear speed measurement.
Article
Materials Science, Multidisciplinary
Tingyu Deng, Ziyun Chen, Wenning Di, Bijun Fang, Haosu Luo
Summary: By optimizing the annealing condition for FeBSiC Metglas, a mix phase structure between amorphous and crystalline was obtained, leading to improved deformation and piezomagnetic properties. The fabrication of a laminate composite using mix phase Metglas and Mn-doped PMN-PT single crystal resulted in enhanced ME coupling performance and sensitivity of the ME sensor.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Engineering, Electrical & Electronic
Gaojian Wu, Ru Zhang
Summary: The study discovered a giant magnetoelectric effect in Pb(Zr,Ti)O-3(PZT)/Mn-Zn-ferrite cylindrical composite, which originated from the low compliance of Mn-Zn-ferrite, improved interface mechanical coupling, and self-bound effect due to cylindrical structure.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Materials Science, Coatings & Films
Sushma Kotru, Vaishali Batra, Jian Zhong
Summary: The influence of Pb content in the PxT seed layer on {100}-texture percentage and electrical properties of PZT films was investigated. PZT films grown on the P1.05T seed layer showed the highest {100}-texture percentage and transverse piezoelectric coefficient, demonstrating the importance of seed layer composition for achieving desired properties in PZT films.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2021)
Article
Materials Science, Multidisciplinary
Amid Shakeri, Mohammad Reza Golobostanfard, Hossein Abdizadeh
Summary: The sol-gel dip coating deposition method was used to fabricate multi-stacked hard/soft piezoelectric lead zirconate titanate (PZT) films with near stoichiometry composition and high quality crack-free surfaces. These films exhibited significantly enhanced polarization, high coercive field, and square shaped polarization-electric field loops, achieving excellent performance in terms of remanent polarization and coercive field. The intriguing properties of hard/soft composite are attributed to the polarization interaction of composite layers and diffusion of ions through the layers.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Instruments & Instrumentation
Xueling Jiang, Linfeng Li, Caijiang Lu, Renren Zhu, Qiang Hua, Longfei Dong, Guoqiang Fu
Summary: This paper proposes a rotational speed sensor based on the magnetoelectric coupling effect, utilizing a magnetoelectric composite to sense magnetic field information and transform it into electrical signals for speed measurement. Experimental results show that the sensor has good linearity and a sensing distance of 15 mm, suitable for low-speed measurements.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2021)
Article
Chemistry, Multidisciplinary
Dana Georgeta Popescu, Marius Adrian Husanu, Procopios Christou Constantinou, Lucian Dragos Filip, Lucian Trupina, Cristina Ioana Bucur, Iuliana Pasuk, Cristina Chirila, Luminita Mirela Hrib, Viorica Stancu, Lucian Pintilie, Thorsten Schmitt, Cristian Mihail Teodorescu, Vladimir N. Strocov
Summary: The intrinsic band structure and polarization dependent electrostatic potential profile of Pb(Zr0.2Ti0.8)O-3 (PZT) material are determined using soft-X-ray angle-resolved photoelectron spectroscopy (ARPES) for the first time. Oxygen vacancies and cation vacancies are identified as the origin of the charge distribution near the PZT film surface.
Article
Crystallography
Sujin Kang, Jonghyeon Lee, Juhyun Yoo, Sun A. Whang, Suho Lee, Seonghoon Kee, Inho Im, Changwoo Oh
Summary: In this study, composite ceramics for an acoustic emission sensor application for nondestructive testing were developed using PNN-PZT-PMW system ceramics, which exhibited high piezoelectric properties suitable for devices such as piezoelectric sensors and ultrasonic transducers.
Article
Crystallography
Juhyun Yoo, Jonghyun Lee
Summary: This study manufactured Pb(Ni1/3Nb2/3)O-3-Pb(Zr,Ti)O-3-BiFeO3 ceramics substituted with Pb(Mg1/2W1/2)O-3 for application in piezoelectric speakers, through MnO2 addition, and found that the non-doped specimen exhibited the maximum piezoelectric properties. The x = 0.2 composition ceramics were deemed suitable for low-temperature sintering multilayer piezoelectric actuators due to their low dielectric constant and high d(33) values with increasing numbers of layers.
Article
Materials Science, Multidisciplinary
Linjing Liu, Bin Yang, Rui Lv, Qiangwei Kou, Shuai Yang, Hang Xie, Yuan Sun, Yunfei Chang, Shan -Tao Zhang, Fei Li
Summary: Textured Pb(Mg1/3Nb2/3)O3-Pb(Zr, Ti)O3 ceramics with strong [001]c-grain orientation were fabricated using templated grain growth technique, exhibiting enhanced piezoelectric coefficient d33* and improved unipolar electrical fatigue resistance. The textured ceramics showed better fatigue resistance and potential for high-performance actuator applications.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Xianyao Jiang, Jiasheng Wang, Zhihua Duan, Chuanqing Li, Tao Wang, Yanxue Tang, Helezi Zhou, Xiangyong Zhao, Feifei Wang
Summary: In this study, ternary ferroelectric thin films were grown on substrates using RF magnetron sputtering method. The optimized conditions resulted in large ferroelectric polarization and high piezoelectric coefficient for the thin films. These findings demonstrate the potential importance of the films for applications in piezoelectric micro-electro-mechanical systems.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Shengdong Sun, Hui Liu, Longlong Fan, Yang Ren, Xianran Xing, Jun Chen
Summary: The grain size effect plays a crucial role in piezoelectric performance, with smaller grains favoring the appearance of higher symmetric tetragonal phase and larger grains characterized by a single monoclinic phase. Fine-grained ceramics show lower sensitivity to electric field in both tetragonal and monoclinic phases, leading to inferior piezoelectric performance, while coarse-grained ceramics exhibit better piezoelectric behavior as the single monoclinic phase is more active to be driven by the electric field.
CERAMICS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Hua Fan, Zhengwei Tan, Haoyang Liu, Luyong Zhang, Fengyuan Zhang, Wanshun Du, Zhen Fan, Xingsen Gao, Feng Pan, Dapeng Yu, Yue Zhao
Summary: This study reports significantly enhanced ferroelectric and piezoelectric properties of graphene/PZT/SRO capacitors, attributing the enhanced performance to improved interface quality and inhibited growth of defective interfacial layer.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Yuequn Wang, Guanglei Xiang, Liang Gao, Wenbin Tang, Guoliang Yuan
Summary: High-power ultrasonic transducers require piezoelectric ceramics with high performance. In this study, PMN-PZT-x%Nb2O5 ceramics (x = 0.0-1.0) with high piezoelectric coefficients, high quality factors, and other desired properties were prepared using low-cost raw materials. PMN-PZT-0.6%Nb2O5 ceramic showed the best electrical properties, including high d(33), Q(m), and temperature tolerance, making it promising for high-power device applications.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
J. Kaarthik, C. Kaushiga, G. Sradha, Nayak Ram, Salla Gangi Reddy, K. C. Sekhar, Annapureddy Venkateswarlu
Summary: Researchers have improved the energy harvesting and storage capabilities of BCZT ceramic materials through the addition of Praseodymium (Pr), making them a promising option for sustainable power generation in electronic devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Electrical & Electronic
C. Kaushiga, J. Kaarthik, G. Sradha, Nayak Ram, Salla Gangi Reddy, V. Annapureddy
Summary: We investigated the microstructure, dielectric, and resistive switching properties of bulk Ba0.7Sr0.3TiO3 (BST) ceramics using a modified sintering approach. The results showed that the DS-processed ceramics had smaller grain size and improved grain size distribution compared to the CSS-processed ceramics. The DS ceramics also exhibited better resistive switching behavior in the metal-insulator-metal (MIM) structures.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Youngki Yeo, Soo-Yoon Hwang, Jinwook Yeo, Jihun Kim, Jinhyuk Jang, Heung-Sik Park, Yong-Jin Kim, Duc Duy Le, Kyung Song, Moonhong Kim, Seunghwa Ryu, Si-Young Choi, Chan-Ho Yang
Summary: We report a technique for the spontaneous gathering of oxygen vacancies at strain-relaxed crack walls using flexoelectricity. Enhanced electronic conductance and a switchable diode-like feature were observed at the crack walls. The diffusivity of mobile defects in crack walls was determined to be 1.4 x 10-16 cm2/s, consistent with oxygen vacancy kinetics.
Review
Materials Science, Multidisciplinary
A. R. Jayakrishnan, J. P. B. Silva, K. Kamakshi, D. Dastan, V Annapureddy, M. Pereira, K. C. Sekhar
Summary: Dielectric capacitors offer high-power density and ultrafast discharging times, making them potential candidates for pulsed power technologies. However, low energy density in different dielectric materials limits their real time applications. Relaxor ferroelectrics have emerged as the most promising solution for energy storage capacitors. This review discusses the latest developments on lead-free relaxor ferroelectrics and strategies to enhance their energy storage performance.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Dongho Kim, Jaejin Hwang, Pilgyu Byeon, Wonsik Kim, Dong Gyu Kang, Hyung Bin Bae, Sang-Gil Lee, Seung Min Han, Jaekwang Lee, Sung-Yoon Chung
Summary: Since the recognition of the significant oxygen-redox contribution to Li transition-metal oxide cathodes' capacity enhancement, the issues of oxygen release, structural variations, and capacity fading have become critical for achieving better electrochemical performance. This study utilizes nanoindentation and surface polishing to investigate the local variations of atomic structure and oxygen content in LiCoO2 and Li2MnO3. The findings provide direct evidence of oxygen release due to lattice strain and suggest the importance of efficient strain relaxation for the longevity of the anion framework in layered oxide cathodes.
ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
Hye-Sung Kim, Ji-Sang An, Hyung Bin Bae, Sung-Yoon Chung
Summary: The authors demonstrate that melting inside BaCeO3 crystals is initiated at two-dimensional faults in a layer-by-layer manner below the melting temperature. Using atomic-column-resolved imaging with scanning transmission electron microscopy, the initiation of melting at two-dimensional faults inside the crystals is clarified and layer-by-layer melting at the early stage is identified as a notable finding.
NATURE COMMUNICATIONS
(2023)
Review
Chemistry, Physical
Min-Ju Choi, Le Wang, Kelsey A. Stoerzinger, Sung-Yoon Chung, Scott A. Chambers, Yingge Du
Summary: The oxygen evolution reaction (OER) is a crucial step in water splitting to produce hydrogen gas. Recently, perovskite oxides, particularly rare-earth nickelates, have been extensively studied as efficient and stable OER electrocatalysts. The epitaxial synthesis of thin films allows precise control over their atomic structures and electronic properties, enabling researchers to explore different design strategies and understand their impact on the electrochemical performance.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Un Yang, Byunghwa Kang, Moon-Jung Yong, Dong-Hwan Yang, Si-Young Choi, Jung Ho Je, Seung Soo Oh
Summary: Through nanoscale confinement, evaporation, and solidification, the direct 3D printing of intact biopolymers is demonstrated, allowing precise control of molecular-scale structures and shapes. Different biopolymers can be patterned with desired size and geometry by controlling concentrations and molecular weights, and their 3D architectures are biologically active in various solvents.
Article
Chemistry, Multidisciplinary
Changmin Lee, Youngjae Hong, Dongho Kim, Younghwan Lim, Jang Wook Choi, Sung-Yoon Chung
Summary: Protons can serve as an additional charge carrier for insertion/extraction in aqueous rechargeable batteries, alongside primary carrier cations. However, conflicting experimental results and interpretations without direct evidence have created controversy over the past decade. This study utilizes V2O5 as a model cathode and demonstrates that the insertion of protons into the cathode occurs before Zn-ions in low-pH conditions, while the influence of protons on discharge voltage and capacity is insignificant at higher pH or lower electrolyte volume.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Chang Woo Song, Jaewan Ahn, Insung Yong, Nakhyun Kim, Chan E. Park, Sein Kim, Sung-Yoon Chung, Pilnam Kim, Il-Doo Kim, Jae-Byum Chang
Summary: Biological systems are composed of hierarchical structures made of proteins. This study proposes the use of cell-derived extracellular matrix as versatile biotemplates to address the limitation of conventional biotemplates.
Article
Chemistry, Multidisciplinary
Soo-Yoon Hwang, Gyoung-Ja Lee, Yuzhao Qi, Michael Abraham Listyawan, Kyung Song, Youngho Kang, Jungho Ryu, Xiaoyan Lu, Min-Ku Lee, Si-Young Choi
Summary: In this study, a method to achieve outstanding thermal stability of converse piezoelectric constant in lead-free potassium sodium niobate (KNN)-based ceramics is proposed. The relationship between grain size and polar configuration is demonstrated, and improved thermal stability in fine grains is suggested. The thermal stability is realized in a device by successfully demonstrating the temperature dependence of piezoelectricity, making it possible to apply the lead-free piezoelectric ceramics as piezoelectric devices with high thermal stability.
MATERIALS HORIZONS
(2023)
Correction
Chemistry, Multidisciplinary
Ji-Sang An, Hae-Seung Lee, Pilgyu Byeon, Dongho Kim, Hyung Bin Bae, Si-Young Choi, Jungho Ryu, Sung-Yoon Chung
Summary: The study corrects the interstice-occupying dopant segregation at grain boundaries in perovskite oxide dielectrics and proposes a new class of ceramic capacitors.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Ji-Sang An, Hae-Seung Lee, Pilgyu Byeon, Dongho Kim, Hyung Bin Bae, Si-Young Choi, Jungho Ryu, Sung-Yoon Chung
Summary: When foreign cations are doped into ABO(3)-type perovskite oxides, they usually replace A or B sites depending on their ionic size. This study uncovers the presence of indium dopants occupying square-planar interstices and charge-compensating Ba vacancies at grain boundaries in polycrystalline BaTiO3. This chemical heterogeneity inhibits grain-boundary migration and enables the attainment of fine-grain microstructures with unprecedented dielectric properties.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Physics, Multidisciplinary
P. Vipin, R. Sankaranarayanan
Summary: The dynamics of a Brownian particle in Morse potential under thermal fluctuations is investigated by numerically integrating the corresponding Langevin equation. The dependence of Kramer's rate on temperature and viscosity of the medium is studied by mean first passage time. An approximate analytical expression for the rate constant is found and it shows a temperature dependent pre-factor for the Arrhenius equation. Numerical simulations are consistent with the analytical approximations.
PRAMANA-JOURNAL OF PHYSICS
(2023)
Article
Materials Science, Ceramics
Zilong Xiong, Wenzhuo Xue, Mujun Li, Feihu Tan, Yupeng Chen, Hongyu Yu
Summary: In this study, CBS glass/Al2O3 composites were developed for LTCC applications based on a CaO-B2O3-SiO2 (CBS) glass system with a high boron content. The study revealed that the softening of glass and interfacial reaction between the glass and Al2O3 were the two most important factors affecting LTCC's densification process. Real-time shrinkage rate of LTCC during sintering was successfully simulated, and it was proven that the formation of the CaAl2(BO3)O phase played a significant role in reducing glass viscosity and promoting dense structure formation. The resulting LTCC composite exhibited excellent performance for high-frequency applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Saurabh Kumar Sharma, Vinita Grover, Rakesh Shukla, Abid Hussain, Ambuj Mishra, Pawan Kumar Kulriya
Summary: In this study, the disordering caused by swift heavy ion irradiation in two different compositions of pyrochlore structures was investigated. X-ray diffraction, Raman spectroscopy, and high-resolution transmission electron microscopy were used to analyze the samples before and after irradiation. It was found that both compositions underwent amorphization due to irradiation, with a slower rate observed in Nd1.8Zr2.2O7.1. The irradiation-induced modified track region in Nd1.8Zr2.2O7.1 consisted of defect-rich pyrochlore structure, anion-deficient fluorite structure, and amorphous domains.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jiabei He, Mengshan Song, Ming Yang, Miaomiao Zhu
Summary: This study investigates the influence of ion irradiation on high-entropy ceramics and finds that irradiation-induced lattice rearrangement can improve the radiation resistance of these ceramics.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yajie Yu, Shi He, Zhengang Zhang, Haihua Chen, Peipeng Jin, Binnian Zhong, Linhui Zhang, Liping Wang, Cheng Lu
Summary: Silicide ceramics, including tantalum disilicide (TaSi2), are known for their exceptional physical properties but are limited in practical applications due to their inherent brittleness at room temperature. In this study, we successfully improved the mechanical properties of TaSi2 ceramics and increased their electrical conductivity by modifying the preparation methods and sintering conditions. These findings provide valuable insights for future applications of TaSi2 and the design of advanced ceramic materials.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jian Li, Jia Liu, Yongcui Zhang, Wei Sun, Yang Wang, Haitao Wu, Ling Li, Chuanbing Cheng, Yingying Wang, Ke Tan, Futian Liu
Summary: Microstructure design plays a crucial role in regulating the microwave dielectric properties of materials, however, the understanding of frequency temperature stability and related micromechanism remains limited. In this study, a combination of first-principles calculations and experimental observation was used to investigate the correlation among sintering behavior, crystal structure, bonding nature, and microwave dielectric properties of LnPO(4) (Ln = Eu, Pr) ceramics. The research findings systematically clarify the optimized effect and micromechanism of lanthanides on the dielectric properties of monazite ceramics, providing insights into the design and enhancement of microwave dielectric materials.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Wenqian Pan, Xizhen Xia, Wei Zhou, Yang Li
Summary: The study investigates the frictional and wear behaviors of carbon fiber-reinforced SiC ceramic matrix composites with different fiber orientations mating with ceramic balls. The results show that fiber orientation significantly affects the friction and wear properties of the composites. Pads with randomly arranged fibers demonstrate better friction stability and lower wear volume, potentially suitable for bearing material applications. The research also explores the factors influencing the formation of continuous tribo-film and identifies abrasive wear and oxidation wear as the dominant wear mechanisms for the friction pairs.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Sergey Nikolaevich Perevislov, Ilya Evgenievich Arlashkin, Valentina Leonidovna Stolyarova
Summary: This paper describes the synthesis and sintering of MAX phases in the Zr-Al-C system. Different mixtures of initial Zr/Al/C and Zr/Al/ZrC powders were used to synthesize Zr2AlC and Zr3AlC2 MAX phases. The highest content of Zr3AlC2 MAX phase was obtained using a component ratio of 1:1.5:2-51.1 vol.% of Zr/Al/ZrC powders.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Weijia Luo, Xubin Wang, Baiheng Bai, Jianli Qiao, Xingcong Chen, Yongzheng Wen, Jingbo Sun, Lingxia Li, Ji Zhou
Summary: This study successfully establishes the relationship between internal strain and dielectric loss by synthesizing and designing specific structure of tungsten bronze ceramics, and concludes that controlling internal strain can effectively reduce dielectric loss. This research is of great significance for the development of future all-ceramic non-Hermitian devices.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Santanu Mondal, Juan Diego Shiraishi Lombard, Sreenivasulu Gollapudi, Carolina Tallon, Jie-Fang Li, Dwight Viehland
Summary: Ultrafast high-temperature sintering (UHS) is an effective method for rapidly densifying ZrB2 powders. The final grain size increases with longer sintering duration. X-ray diffraction and energy-dispersive spectroscopy show crystalline phase and compositional uniformity in ZrB2 after UHS.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
JiaNan Wang, ZhiQiang Li, YongZheng Zhu, Yao Liang, Yan Cui, HuaLong Tao, Bo Song, Alexander Nikiforov, ZhiHua Zhang
Summary: First-principles calculations were performed to investigate the crystal structure, electronic structure, and ion diffusion of sulfur-doped Li2FeSiO4. The results showed that sulfur doping can improve the electronic conductivity and reduce the energy barrier for ion diffusion.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Xiaodi Dai, Serdar Aydin, Mert Yuecel Yardimci, Gunter Reekmans, Peter Adriaensens, Geert De Schutter
Summary: This study investigates the rheological behavior, solidification process, and nanostructure changes of sodium hydroxide-activated slag (NH-AAS) and sodium silicate-activated slag (SS-AAS) pastes over time. The results show that NH-AAS and SS-AAS release similar heat and reach a similar reaction degree at their initial setting times, but have different gel structures.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yanliang Ji, Simon Becker, Zichen Lu, Alexander Mezhov, Regine von Klitzing, Schmidt Wolfram, Dietmar Stephan
Summary: This study reveals the significant influence of resting time on the rheological properties of cement suspensions, which is closely related to non-absorbed polycarboxylate superplasticizers (PCEs) size variation. Adsorbed PCE during resting tends to bridge particles instead of dispersing them, leading to an increased yield stress.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yifeng Huang, Xin Wang, Yinchang Ma, Xiang Lv, Jiagang Wu
Summary: This study investigates the effect of K/Na ratio on the phase structure, ferroelectric domains, and piezoelectric properties of potassium sodium niobate (KNN)-based ceramics. It reveals that high Na+ content leads to large ferroelectric domains, while high K+ content results in local polarity heterogeneity and distinct dielectric relaxational behavior. The balanced local polarity and stress heterogeneities contribute to improved piezoelectricity.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Zun Xia, Yedong Rong, Hao Li, Ye Dong, Hongbo Yu, Jie Xu, Xiuhui Wang, Jinlong Yang
Summary: This study presents the synthesis of hollow MgAl2O4 particles in situ within porous ceramics, resulting in volume expansion and the formation of a hierarchical pore structure, leading to a significant improvement in compressive strength.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Honglong Wang, Zhiguo Sun, Faming Xia, Chenguang Yang, Xiaoguang Wang, Jintang Li, Linxu Jiang
Summary: In this study, the micro-geometry morphology variation and microstructural transformation mechanism of muscovite crystals under electron beam irradiation were explored. The results revealed the instability of the muscovite lattice under irradiation, as well as the expansion and shrinkage of the lattice with increasing dose. The study also identified changes in chemical structure and other mechanisms involved. These findings are significant for the design of radiation-resistant silicate materials and the manufacturing of electronic components used in the aerospace industry.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
