Article
Materials Science, Ceramics
Kangli Xu, Pan Yang, Wei Peng, Lingxia Li
Summary: A series of Pb-free dielectric tunable ceramics based on (Ba1-xCax)( Zr0.18Ti0.82)O-3 were carefully prepared in this work. The BCZT09 ceramics showed high tunability (86.09%) and low dielectric loss (-0.19% @7.42 kV/cm) at 1 kHz. The temperature stability of dielectric tunable performance was improved with Ca2+ incorporation, with BCZT09 showing advantages in a temperature range of -20 degrees C to 85 degrees C. These observations suggest BCZT09 as a promising matrix for application in dielectric tunable devices operating at room temperature.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Electrical & Electronic
Yuanyuan Sun, Huabin Yang, Shibo Guan, Jiwen Xu, Weiran Huang, Minhong Jiang, Qiaohong Chen
Summary: Experimental study investigated the structure, microstructure, piezoelectric properties, ferroelectric properties, and Curie temperature of BFBT-BZT ceramics, showing that the composition at x=0.3 exhibits high piezoelectric performance and Curie temperature. Additionally, ceramics at x=0.24 display a high Curie temperature and low dielectric loss.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Weijie Zheng, Jiaqi Lin, Xinmei Liu, Wenlong Yang, Yuanshuo Li
Summary: The study systematically investigated the effect of co-doping Ce and Sb on the performance of BCZTC ceramics, showing significant improvements in structure, properties, and microstructure. The co-doped ceramics exhibited enhanced grain growth, relative density, and electrical performance, making them promising candidates for lead-free devices.
Article
Crystallography
Jianzhou Du, Long Qiu, Cong Yang, Yuansheng Chen, Kongjun Zhu, Luming Wang
Summary: Different Ca and Zr ion contents have a significant effect on the phase structure, microstructure, and electrical properties of (Ba,Ca)(Zr,Ti)O-3 ceramics. Ceramics doped with Ca and Zr ions exhibit optimized ferroelectric properties, with the (Ba0.85Ca0.15)(Zr0.1Ti0.9)O-3 ceramic demonstrating the best performance.
Article
Physics, Applied
Aditya Jain, Ajay Kumar, Neha Gupta, Vinay Kumar
Summary: Multi-layer ceramic capacitors with high recoverable energy storage density and large energy efficiency play a crucial role in modern electronic devices. Various ferroelectric ceramic materials with relaxor characteristics and large dielectric constant are the most favorable candidates for achieving superior energy storage performance. In this study, a novel lead-free (1-x)Ba0.80Ca0.20TiO3-x(Bi0.80Mg0.20)(Ti0.65Mg0.30)O-3(BCT-BMT) ceramic material was prepared using a two-stage mechano-chemical activation technique. BMT substitution in Ca modified BaTiO3 resulted in substantial improvement in microstructural characteristics and energy storage performance compared to pure BCT. Introduction of BMT in BCT transformed it into relaxor ceramics, essential for high recoverable energy storage density and energy efficiency. The composition 0.65BCT-0.35BMT exhibited typical relaxor characteristics, large breakdown strength, and a significantly large dielectric constant, achieving an ultra-high recoverable energy density of 3.09 J cm(-3) with a moderately high energy efficiency of approximately 80.15%.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Materials Science, Ceramics
Young Soo Lim, Subramanian Sasikumar, Hae Won Lee, Min Ho Jang
Summary: By investigating the effects of Ca doping into A-site on the properties of BCTS ceramics, we found that Ca incorporation can enhance the ferroelectricity of BCTS ceramics, but at the same time, it leads to a diffuse phase transition in the ceramics.
JOURNAL OF THE KOREAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Zhuo Li, Zixuan Wang, Qiangbin Yang, Dandan Zhang, Mingming Fang, Zhe Li, Boyang Gao, Jiayong Zhang, Nannan Lei, Lifei Zheng, Zhuo Wang, Xin Yan, Dawei Wang, Changbai Long, Yanhui Niu
Summary: This work investigates the phase structure and functionalities of Bi0.5Na0.5TiO3 (BNT) lead-free ceramics. By introducing Bi(Mg2/3Nb1/3)O3 (BMN) into BNT, a homogeneous solid solution was formed. With increasing BMN content, the material undergoes a phase transition from rhombohedral to tetragonal, resulting in a lower ferroelectric-paraelectric phase transition temperature and broadening dielectric peaks. Furthermore, the BNT-0.10BMN ceramics exhibit an optimized recoverable energy density of 1.405 J/cm3 under a low applied electric field, attributed to the transformation from ferroelectric to ergodic relaxor phase.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
Fanghui Mou, An Xue, Qibin Liu, Shiqiang Peng, Yuanyu Wang, Enpei Cai, Sifan Wang
Summary: The study found that different doping contents can affect the phase coexistences of lead-free piezoelectric ceramics, with ceramics exhibiting multiphase coexistences showing superior electrical properties, achieving outstanding performance at x = 0.2 mol%.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Ceramics
Gang Liu, Wenzi Yu, Ying Wang, Haoren Feng, Minghui Hao, Guanghua Wu, Quan Li, Kun Yu, Baoyan Fan, Li Jin, Chunlin Song, Yan Yan
Summary: In this paper, Sr2+ and Hf4+ are doped into BaTiO3 to construct a multicritical point, improving the adiabatic temperature change and broadening the working temperature span. The (Ba0.9Sr0.1)(Hf0.1Ti0.9)O3 ceramic shows the most excellent comprehensive electrocaloric performance and has the potential as a lead-free bulk ceramic material for EC refrigeration applications.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
V. Madhu Babu, J. Paul Praveen, Dibakar Das
Summary: This study investigates the aging behavior of BCZT ceramics synthesized through the solid-state process, finding that stresses generated during processing are subsequently relaxed over time, leading to changes in piezoelectric and dielectric properties. By measuring the variations in piezoelectric and dielectric properties, as well as analyzing changes in crystal structure, a deeper understanding of the aging behavior of ceramic materials can be achieved.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Don Biswas, Prolay Sharma, N. S. Panwar
Summary: Ceramic pellets of (Ba1-xCax)(Zr1-yTiy)O-3 were prepared using solid-state reaction method followed by double sintering. The dielectric properties and high temperature X-ray diffraction measurements showed a structural anomaly around 100 degrees C, with the sample exhibiting tetragonal phase below 100 degrees C and cubic phase above 100 degrees C.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Chao Li, Jin-Su Baek, Jung-Hyuk Koh
Summary: This study demonstrates that the introduction of CeO2 and Y2O3 can improve the piezoelectric properties and electromechanical coupling coefficient of BCZT ceramics. Additionally, these dopants promote grain growth process, enhancing the overall performance of the material.
Article
Materials Science, Ceramics
Myang Hwan Lee, Hae In Choi, Da Jeong Kim, Ji Su Kim, Tae Kwon Song
Summary: Hard piezoelectric properties were investigated in lead-free BiFeO3-BaTiO3 (BF- BT) ceramics. Rhombohedral (R) phase ceramics of (1 - x)BF-xBT (x = 0.20-0.30) were prepared. The x = 0.20 ceramic showed the best hard piezoelectric properties, with the highest Q(m) = 403 and the highest T-C = 607°C. In contrast, the x = 0.30 ceramic showed soft piezoelectric properties, with d(3)(3) = 301 pC/N and k(p) = 0.33, and T-C = 510°C. The BF-BT system in the R-phase-rich region has good hard piezoelectric properties for transducer applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Pharatree Jaita, Ratabongkot Sanjoom, Gobwute Rujijanagul
Summary: Complex piezoelectric ceramics with different x values (between 0 and 0.03) were investigated. The ceramics exhibited a coexistence of rhombohedral and tetragonal phases, with the tetragonal phase becoming dominant at higher BFN contents. The addition of BFN interrupted ferroelectric ordering and enhanced the dielectric constant at Tm, making the ceramics potential for electromechanical applications.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Chemistry, Physical
Dandan Han, Changhao Wang, Zhixin Zeng, Xin Wei, Panlong Wang, Qiaoli Liu, Dawei Wang, Fanling Meng
Summary: By introducing BMS into BCZT ceramics, this study achieved high energy efficiency, high recoverable energy density, and excellent temperature stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
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)