Article
Chemistry, Physical
Jun Wu, Guoying Yan, Mingjing Chen, Yuli Xue, Linjie Gao, Jianglong Wang, Shufang Wang
Summary: Ba doping significantly enhances the light-induced transverse thermoelectric effect in BiCuSeO films, leading to higher sensitivity and faster response time. The improvement is attributed to increased Seebeck coefficient anisotropy and decreased film resistivity due to the increase in hole carrier concentration of the Ba-doped films, showing potential application in UV detectors."
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Shuaihang Hou, Zhiliang Li, Yuli Xue, Xinkun Ning, Jianglong Wang, Shufang Wang
Summary: SnSe thin films with a-axis orientation were successfully prepared, exhibiting a relatively high power factor at 600 K after optimizing the tin vacancy concentration. The thermal conductivity of the thin films decreased, while an ultrahigh estimated-zT value was achieved in the in-plane direction.
MATERIALS TODAY PHYSICS
(2021)
Article
Multidisciplinary Sciences
Yinong Yin, Ashutosh Tiwari
Summary: The thickness of Ca3Co4O9 thin films grown on single-crystal Sapphire (0001) substrate affects the Seebeck coefficient, electrical conductivity, and power factor. The films with 60 nm thickness showed the highest power factor. The overall increase in the Seebeck coefficient with decreasing film thickness was accompanied by a simultaneous decrease in the electrical conductivity, leading to a non-monotonous dependence of the power factor on thickness.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Binbin Xin, Lei Wang, Arnaud Le Febvrier, Anna Elsukova, Biplab Paul, Niclas Solin, Per Eklund
Summary: By incorporating organic filler into nanoporous inorganic matrix material, the mechanical flexibility of the material can be improved with only a slight decrease in thermoelectric properties.
Article
Chemistry, Physical
Dilawar Ali, M. Z. Butt, I Muneer, F. Bashir, M. Hanif, Taj M. Khan, Shahab Ahmed Abbasi
Summary: Highly c-axis oriented ZnO thin films with wurtzite structure were grown onto preheated glass using spray pyrolysis technique with varying Al/Zn ratios. The films exhibited good optical properties and antibacterial activity against Escherichia Coli bacteria, with enhanced efficacy on increasing Al/Zn ratio. These antimicrobial coatings have potential applications in surgical instruments, protective hospital apparels, medical implants, storage containers, textile, and food packs.
SURFACES AND INTERFACES
(2021)
Article
Materials Science, Ceramics
Ya-nan Li, Ping Wu, Shiping Zhang, Yili Pei, Jinguang Yang, Sen Chen, Li Wang
Summary: The study investigates the enhancement of thermoelectric performance of Ca3Co4O9 ceramic samples by adding nano-MoSi2 particles. The experimental results demonstrate that the appropriate addition of MoSi2 particles can increase the carrier concentration, enhance the electrical conductivity and Seebeck coefficient of Ca3Co4O9, and effectively reduce the thermal conductivity. The ZT value is increased by 44.4%.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Xiaohe Zhang, Xiaowei Lu, Peng Jiang, Xinhe Bao
Summary: Oriented GeTe films with excessive Ge have been obtained by magnetron co-sputtering, which can reduce carrier concentration, increase carrier mobility, and maintain high electrical conductivity. The higher structural symmetry and grain boundary scattering also enhance the Seebeck coefficient of oriented GeTe films. A TE device with the Ge-rich GeTe thin film has been fabricated, achieving a maximum output power density of 0.3 W cm(-2) at ΔT = 250 K. This work demonstrates the effectiveness of stoichiometry and orientation modulations in improving the thermoelectric performance of GeTe thin films.
Article
Engineering, Electrical & Electronic
Binbin Xin, Biplab Paul, Arnaud le Febvrier, Per Eklund
Summary: Thin-film Ni-Ca3Co4O9 and Ni-Mo thermocouples were synthesized using stepwise magnetron-sputtering/annealing with masks. Ni-Ca3Co4O9 thermocouples showed higher output voltage than Ni-Mo thermocouples due to a large positive Seebeck voltage. The stability and ability to make free-standing films of Ca3Co4O9 films, along with their high Seebeck coefficient, make them suitable for use as p-type legs in thermocouples, with implications for free-standing and flexible thermoelectric devices.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Aradhana Tiwari, P. P. Sahay
Summary: This paper presents the results of studying the microstructural, optical, and electrical characteristics of (Mg, Sn) co-doped ZnO films as a function of Mg and Sn dopant concentrations. It is found that doping and codoping can alter the crystallite size, surface roughness, transmittance, and electrical conductivity of the films. The Mg:Sn (1:1 at%) co-doped ZnO film shows the highest transmittance and electrical conductivity, making it a potential candidate for optoelectronic applications.
Article
Physics, Applied
W. P. Cheng, Y. D. He, R. H. Wei, L. Hu, W. H. Song, X. B. Zhu, Y. P. Sun
Summary: Designing and realizing high-efficiency p-type thermoelectric materials is crucial for integrated thermoelectric components. Thermoelectric thin films, compared to single crystal bulk materials, are more suitable for miniaturization. In this study, c-axis oriented CuRh1-xMgxO2 thin films were prepared and their thermoelectric properties were investigated. It was found that a p-type 10% Mg-doped CuRhO2 thin film exhibited a large power factor at 300 K, suggesting its potential as a p-type thermoelectric oxide for Rh-based thermoelectric thin films.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Applied
T. Harada, T. Nagai, M. Oishi, Y. Masahiro
Summary: This study reports the successful growth of c-axis-oriented PdCoO2 thin films on Al2O3 (001) substrates using magnetron sputtering. The films exhibited layered crystal structures, with a clear interface stacking sequence of Pd/CoO2/Al2O3. This layer stacking induces a high work function at the interface. Post-annealing treatment significantly decreased the resistivity of the films. Impurity phases of PdOx were observed using X-ray diffraction and scanning transmission electron microscopy. The sputtering deposition of c-axis-oriented thin films provides potential practical applications for the polar surface of PdCoO2 in semiconductor devices.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Uzma Hira, Syed Shahbaz Ali, Shoomaila Latif, Nini Pryds, Falak Sher
Summary: Layered structured Ca3Co4O9 shows great potential for thermoelectric renewable energy applications. In this study, dual doping of Na and Mo cations is found to significantly enhance the thermoelectric properties of Ca3Co4O9, with improved Seebeck coefficient, decreased electrical resistivity and thermal conductivity, and higher dimensionless figure of merit.
Article
Chemistry, Multidisciplinary
Uzma Hira, Syed Shahbaz Ali, Shoomaila Latif, Nini Pryds, Falak Sher
Summary: The study demonstrates that dual doping of Na and Mo cations is an effective strategy to improve the high-temperature thermoelectric properties of Ca3Co4O9, leading to enhanced Seebeck coefficient and reduced electrical resistivity and thermal conductivity. The thermoelectric power factor and dimensionless figure of merit obtained for the dual-doped materials are significantly improved compared to the pristine compound, showing great potential for thermoelectric renewable energy applications.
Article
Physics, Multidisciplinary
Ma Yun-Peng, Zhuang Hua-Lu, Li Jing-Feng, Li Qian
Summary: In this study, high-quality Nb-doped SrTiO3 films with different thickness were prepared on SrTiO3 and La0.3Sr0.7Al0.65Ta0.35O3 substrates by pulsed laser deposition. The surface morphologies, crystal structures, and thermoelectric performances of the films were characterized. The results showed that the strain-free film exhibited improved thermoelectric performance with increasing thickness. The strain-induced changes in the energy band of the thin film greatly improved the Seebeck coefficient of the Nb:STO/LSAT sample with strain at room temperature.
ACTA PHYSICA SINICA
(2023)
Article
Engineering, Electrical & Electronic
Dongjie Qian, Jiale Miao, Pengyue Yuan, Yanyan Yuan, Dongdong Song, Rui Lan
Summary: By doping Ge2Sb2Te5 with N elements, the carrier concentration can be regulated and the thermoelectric properties can be optimized. N doping changes the band structure, reduces the carrier concentration, and increases the resistivity. However, at high doping quantities, there is a significant loss in the Seebeck coefficient.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
C. B. Pan, G. C. Zhao, S. M. Li, M. F. Shu, J. Wu, J. M. Z. Wang, L. H. Yin, W. H. Song, X. B. Zhu, J. Yang, Y. P. Sun
Summary: In this study, (1-x)CaBi2Nb2O9-xBaZr0.2Ti0.8O3 composite ceramics were prepared by conventional solid-state sintering, and it was found that the introduction of BaZr0.2Ti0.8O3 increased the permittivity and reduced the dielectric loss of the material. The x = 0.01 sample exhibited the optimum electrical properties and the composite materials showed good thermal depoling performance.
CURRENT APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Chenhui Li, Penglai Gong, Jinxing Zheng, Minglin Zhao, Renhuai Wei, Wangping Cheng, Ling Hu, Wenhai Song, Xuebin Zhu, Yuping Sun
Summary: Researchers have successfully designed and fabricated a high-performance p-type 4d transition metal Rh-based CuRhO2 film using a facile solution method, achieving high room-temperature conductivity of 735 S cm(-1) through the substitution of 10%Mg in Rh sites. Additionally, the acceptor-doped CuRhO2 films exhibit high near-infrared transmittance and low room-temperature sheet resistance. The electronic structure, electrical transport mechanism, and intra-band excitation feature of the CuRhO2 film have also been unveiled, making a significant advancement in p-type TC films.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Physics, Multidisciplinary
Chen Zhou, Wang-Ping Cheng, Yuan-Di He, Cheng Shao, Ling Hu, Ren-Huai Wei, Jing-Gang Qin, Wen-Hai Song, Xue-Bin Zhu, Chuan-Bing Cai, Yu-Ping Sun
Summary: This study investigates the potential of Bi2Sr2CuO y and Bi2Sr1.8Nd0.2CuO y thin films as p-type transparent conductors. The results demonstrate that the Bi2Sr1.8Nd0.2CuO y thin film exhibits high transmittance and conductivity.
Article
Chemistry, Physical
Xuzhong Zuo, Enjie He, Yanfu Qin, Banggui Guan, Gaochao Zhao, Jie Wu, Zhenzhen Hui, Jie Yang, Xuebin Zhu, Jianming Dai
Summary: In this paper, the structural, multiferroic, dielectric, and optical properties of Aurivillius Bi6Fe1.5Co0.5Ti3-xWxO18 (0 <= x <= 0.07) ceramics were investigated. The doping of W6+ ions promoted grain growth and induced c-axis orientation. The magnetic and ferroelectric properties were affected by the doping level, Fe2+-O-Fe3+ exchange, oxygen vacancy, grain size, and orientation. The dielectric and optical properties were also influenced by the doping.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Applied
M. Zhu, G. D. Zhang, D. P. Song, J. Y. Wu, R. R. Zhang, L. Hu, R. H. Wei, W. H. Song, X. B. Zhu, Y. P. Sun
Summary: The traditional strategy for TCOs focuses on chemical design, but p-type TCOs still exhibit lower performance. Recent research shows that compressive strain in V2O3 thin films can increase carrier concentration and enhance the performance of p-type TCOs.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Applied
L. H. Yin, J. Yang, P. Tong, W. H. Song, J. M. Dai, X. B. Zhu, Y. P. Sun
Summary: We report the cluster spin glass behavior, multiferroicity, and magnetoelectric effects in single crystals of 0.46 BiFeO3-0.54 Bi-0.5 (K-0.31 Na-0.69)(0.5) TiO3. The crystals exhibit a pseudo-cubic structure with a weak tetragonal distortion and show ferroelectricity at room temperature. The cluster spin glass state in the crystal is confirmed, and magnetodielectric effects and poling enhanced magnetism are observed.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Physics, Applied
W. P. Cheng, Y. D. He, R. H. Wei, L. Hu, W. H. Song, X. B. Zhu, Y. P. Sun
Summary: Designing and realizing high-efficiency p-type thermoelectric materials is crucial for integrated thermoelectric components. Thermoelectric thin films, compared to single crystal bulk materials, are more suitable for miniaturization. In this study, c-axis oriented CuRh1-xMgxO2 thin films were prepared and their thermoelectric properties were investigated. It was found that a p-type 10% Mg-doped CuRhO2 thin film exhibited a large power factor at 300 K, suggesting its potential as a p-type thermoelectric oxide for Rh-based thermoelectric thin films.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Applied
Gaochao Zhao, Chengbing Pan, Wei Dong, Lei Xie, Peng Tong, Jie Yang, Xuebin Zhu, Lihua Yin, Wenhai Song, Yuping Sun
Summary: We observe a clear converse magnetoelectric effect at room temperature in ternary BiFeO3-based systems near the morphotropic phase boundary (MPB). In situ XRD diffraction under different electric fields reveals that lattice distortion and phase transitions dominate the observed effect. This finding provides experimental proof and an explanation for electric-field control of magnetism at the MPB, potentially enabling the design of low power consumption magnetoelectric devices.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Analytical
Ruobing Zheng, Lili Zhu, Changdian Li, Ziqiang Wu, Yanan Huang, Jie Yang, Renhuai Wei, Xuebin Zhu, Yuping Sun
Summary: Misfit-layered Ca3Co4O9 was investigated as an oxygen evolution reaction catalyst for electrochemical water splitting. Oxygen vacancies were effectively induced by ball milling, as confirmed by electronic paramagnetic resonance and X-ray photoelectron spectrometer measurements. The sample with a ball milling time of 24 hours showed the best electrochemical performance, attributed to the induced oxygen vacancies and enhanced specific surface area. This work provides an effective route for improving the electrochemical oxygen evolution reaction performance of misfit-layered cobaltates.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Electrical & Electronic
J. M. Z. Wang, M. F. Shu, S. M. Li, C. B. Pan, M. Tao, L. H. Yin, W. H. Song, X. B. Zhu, J. Yang, Y. P. Sun
Summary: BiFe0.93Mn0.07O3-0.82BiFe(0.975)Ti(0.025)O(3)-0.18CaTiO(3) thin films were prepared on Pt/Si substrate by chemical solution deposition. The microstructure, ferroelectric and piezoelectric properties of the films under different annealing temperature were systematically studied. The film annealed at 500°C exhibited the highest remanent polarization and piezoelectric coefficient, comparable to other BiFeO3-based oriented films. This work offers a cost-effective approach for preparing high-quality lead-free composite ferroelectric films.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Physics, Condensed Matter
Sumei Li, Mingfang Shu, Meng Wang, Chengbing Pan, Gaochao Zhao, Lihua Yin, Wenhai Song, Jie Yang, Xuebin Zhu, Yupin Sun
Summary: A new perovskite-type oxide, CaCu3Cr2Nb2O12, was synthesized under high pressure and temperature, and its magnetic properties were investigated. The compound exhibits a paramagnetic-ferrimagnetic transition at low temperature, showing predicted critical behavior.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Engineering, Electrical & Electronic
M. Tao, C. B. Pan, L. H. Yin, W. H. Song, X. B. Zhu, J. Yang, Y. P. Sun
Summary: High temperature piezoelectric ceramic Bi3TiNbO9 with the addition of BaO-2B(2)O(3) as a sintering aid was prepared using a solid-state reaction method. The addition of BaO-2B(2)O(3) promoted grain growth and increased sample density. The ferroelectric and piezoelectric properties of the Bi3TiNbO9 samples with BaO-2B(2)O(3) addition showed remarkable improvement compared to Bi3TiNbO9 alone. The enhanced electrical properties of the samples can be attributed to the dense morphology, increased structural distortion, and reduced oxygen vacancy concentration. This study is important for the development of high-temperature piezoelectric ceramics with reasonable electrical properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Ceramics
Li Zhang, Chen Zhou, Renhuai Wei, Xiaotian Kong, Xuebin Zhu
Summary: In this study, LaRh1-xNixO3 (x = 0, 0.05, 0.1) thin films were deposited by chemical solution deposition. The results showed that Ni doping can enhance the conductivity of the films, making them suitable for a wide range of applications.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Wangping Cheng, Yuandi He, Renhuai Wei, Ling Hu, Wenhai Song, Xuebin Zhu, Yuping Sun
Summary: In this study, the rectification behavior of transparent p-n heterojunctions based on solution-processed p-type CuCrO2 and n-type In2O3 thin films was reported. The performance of the heterojunction was improved by changing the annealing temperature of the In2O3 thin film. The optimized p-n diode exhibited a high rectification rate of 1.41 x 104 (at ± 3 V) and an ideal factor of 3.9 while maintaining a visible transmittance exceeding 60%. The conduction mechanism in the heterojunction was dominated by space-charge limited conduction. These results will drive the application of delafossite oxide-based diodes in transparent electronics.
Article
Materials Science, Multidisciplinary
Chengbing Pan, Gaochao Zhao, Sumei Li, Xuelian Wang, Jiamingzhu Wang, Ming Tao, Xuekai Zhang, Cheng Yang, Juping Xu, Wen Yin, Lihua Yin, Wenhai Song, Peng Tong, Xuebin Zhu, Jie Yang, Yuping Sun
Summary: This paper comprehensively investigates the effect of B2O3 sintering aid on the microstructural and electrical properties of CaBi2Nb2O9. The addition of B2O3 promotes crystal growth and increases lattice distortion, leading to improvements in ferroelectric and piezoelectric properties.
JOURNAL OF MATERIALS CHEMISTRY C
(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)
