Article
Chemistry, Multidisciplinary
Yin Fang, Yu Bai, Yi Zhuo Li, Ning Liu, Fan Zhang, Chao Wang, Zhan Jie Wang
Summary: Antiferroelectric PbZrO3 films crystallized by microwave radiation show improved energy storage performance compared to films crystallized by ordinary heating, with higher energy storage density and better stability and electric breakdown strength.
Article
Materials Science, Ceramics
Yan Liu, Zhibiao Ma, Yangyang Wang, Bingdong Yao, Jingxian He, Jing Li, Fengqing Zhang
Summary: In this study, a BTBF composite film was prepared using the sol-gel method on a FTO/glass substrate, and its structure, oxygen vacancy concentration, electrical properties, and aging were tested and analyzed at different annealing temperatures. The results showed that the sample annealed at 615°C exhibited the best crystallinity, ferroelectricity, and leakage current characteristics.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Habib Chenaina, Charfeddine Messaadi, Jalila Jalali, Hatem Ezzaouia
Summary: This study focuses on sol-gel derived SnO2-TiO2 thin films deposited on silicon wafer type Si (100) substrate using spin coating technique, followed by heat treatments at four different temperatures. XRD characterization reveals the formation of nano-crystalline phase at 400 degrees C and further crystallization with increasing annealing temperature. Optical and dielectric properties analysis demonstrates universal many body response over a broad frequency range, presenting variations in structure and performance of the films.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Materials Science, Ceramics
Haojie Qu, Yuxian Guo, Donghui Zhang, Bai Sun, Linli Yan
Summary: In this study, vanadium dioxide thin films were fabricated on Al2O3 substrates by sol-gel method and subsequent annealing process. The effects of annealing temperature on the structure, chemical state, surface morphology and electrical properties of the films were studied. The results showed that the films exhibited good phase transition property as the annealing temperature increased.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Huihuang Xu, Hua Hao, Yanjiang Xie, Xin Wang, Jianlu Geng, Minghe Cao, Zhonghua Yao, Hanxing Liu
Summary: Lead-free BaZr0.25Ti0.75O3 films grown via a sol-gel method on Pt/Ti/SiO2/Si substrates exhibit good microstructure and energy storage performance, with moderate polarization and high breakdown strength, as well as excellent temperature stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Carlos E. Caballero-Guerecaa, M. R. Alfaro Cruza, E. Luevano-Hipolitoa, Leticia M. Torres-Martinez
Summary: Highly transparent ZnO films were successfully deposited on glass substrates using the sol-gel technique. The quality of the films was influenced by the concentration of zinc in the precursor solution and the annealing temperature. The films showed good crystallinity and preferential orientation, and exhibited high transmittance of over 90%.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
D. Ait Elhaj, A. El Kissani, H. Ait Dads, H. Chaib, K. Elassali, A. Outzourhit
Summary: Copper iron tin sulfide (CFTS) thin films were prepared using a sol-gel spin-coating method without a sulfurization step. The optimal synthesis condition was found to be at 400 degrees Celsius for 40 minutes, resulting in pure phase thin films with good physical properties suitable for solar cell applications.
Article
Materials Science, Ceramics
Angel de Jesus Morales-Ramirez, Margarita Garcia-Hernandez, Maria Luz Carrera-Jota, Paulina Garnica-Chavez, Brenely Gonzalez-Penguelly, Aristeo Garrido-Hernandez
Summary: Lu2Si2O7:Eu3+ thin films were prepared using sol-gel methods and dip coating, and exhibited a monoclinic structure with preferential orientation along a specific direction after heat treatment. The films showed strong emission from Eu3+ ions, with the optical yield and decay time increasing with the SiO2 content.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Renzhong Xue, Liuyang Zhao, Siyuan Chen, Hongxuan Chen, Mengru Cui, Xintao Bai, Tao Li, Dewei Liu, Haiyang Dai
Summary: The effects of A-site transition from Ca2+ to Cd2+ on the microstructure, morphology, and electrical properties of Ca(1-x)CdxCu(3)Ti(4)O(12) thin films were investigated. The films exhibited smooth and compact surfaces without cracks. The transition from Ca2+ to Cd2+ resulted in changes in grain size and electrical properties. In particular, the simultaneous occupancy of A sites by Ca2+ and Cd2+ improved the dielectric and nonlinear properties of Ca1-xCdxCu3Ti4O12 films.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Urska Trstenjak, Nina Daneu, Jamal Belhadi, Zoran Samardzija, Aleksander Matavz, Vid Bobnar, Gertjan Koster, Matjaz Spreitzer
Summary: Epitaxial thin films of 0.67[Pb(Mg1/3Nb2/3)O-3]-0.33[PbTiO3] (PMN-33PT) were prepared using ceramic targets and pulsed-laser deposition (PLD), enriched with PbO (and MgO). The composition and crystal structure were analyzed using high-resolution X-ray diffraction. Chemical analysis of the films revealed deviations from stoichiometry, especially in Pb and Mg content. Custom-made ceramic targets were found to effectively tune the film stoichiometry, showcasing their advantage over single-crystal targets in PLD growth of complex metal oxides. The sample with the largest deviations from nominal stoichiometry, prepared from a target with 20 mol% PbO excess, exhibited the highest longitudinal piezoelectric coefficient.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
Xia-Li Liang, Jian-Qing Dai
Summary: BFMO thin films were successfully deposited on FTO/glass substrates via sol-gel technique, with Mn doping showing significant enhancement in properties compared to pure BFO samples. The Mn doping-induced changes in structure, grain size reduction, and oxygen vacancies were identified as underlying mechanisms for the improved performance of BFMO films, making them promising for ferroelectric photovoltaic device applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Crystallography
Piotr Winiarz, Monica Susana Campos Covarrubias, Mantas Sriubas, Kristina Bockute, Tadeusz Miruszewski, Wojciech Skubida, Daniel Jaworski, Giedrius Laukaitis, Maria Gazda
Summary: This work reviews experimental results on the electrical properties of barium cerate-zirconate thin films and discusses the strong influence of film microstructure on these properties. Additionally, the effects of interface layers, space-charge layers, and strain-modified layers on total conductivity are also essential considerations.
Article
Materials Science, Multidisciplinary
Hao Li, Jiawei Wang, Ziwei You, Yuxi Yu, Pai Li, Liwei Xiong, Yunbin He
Summary: Nb-doped VO2 films were synthesized to enhance thermal sensing abilities, with the thermal hysteresis and resistivity decreasing while the transition temperature range widened as doping content increased. The strategy of Nb doping in VO2 showed promising results for thermal-sensing applications.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Chemistry, Physical
Y. Mansilla, M. D. Arce, C. Gonzalez-Oliver, J. Basbus, H. Troiani, A. Serquis
Summary: ZrO2 thin films were synthesized using the sol-gel method and characterized using various techniques, showing excellent insulating properties and high symmetry phases, making them ideal for electrical insulator and anti-corrosion coatings.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
Aziz Nfissi, Mounir Belhajji, Abdelhak Chouiekh, Abdelilah Rjeb, Abdelfettah Barhdadi, Salaheddine Sayouri, Yahya Ababou
Summary: Cadmium oxide (CdO) thin films were successfully deposited on glass substrates by the sol-gel spin coating method. The effects of the annealing temperature and Zirconium (Zr) doping on the physical properties of the CdO thin films were investigated. It was found that 550 °C is the optimal annealing temperature with a good crystallinity for the CdO thin films. Then, by using this temperature, different Zr doping concentrations (0, 1, 3, 5 and 7%) were prepared at the same experimental conditions. The X-ray diffraction (XRD) patterns of all the as-prepared thin films showed a polycrystalline nature with a face centered cubic (FCC) structure and that Zr incorporated the sites of Cadmium (Cd) up to 3% concentration, while the excess Zr doping (x > 3%) aggregated at the grain boundaries of the CdO lattice. Scanning electron microscopy (SEM) analysis revealed homogeneous and dense grains distribution with a film thickness of 30 μm. The optical study showed an increase in optical transmittance of CdO with Zr doping up to 3% and then a decrease onwards within the same wavelength region. The optical band gap values increased from 2.41 to 2.67 eV with increasing Zr doping which was explained by the Burstein-Moss effect. The minimum electrical resistivity (5.32 x 10(-1) Ω·cm) was obtained for the film coated with 3% Zr using the four-probe method.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Songhua Si, Zichao Ding, Ruzhong Zuo, Lei Zhang, Huawei Sun, Bing Cui, Dong Xu
Summary: This study optimized the performance of NiCrSiCuSn boron-free brazing filler metal by adding Hf element, improving the bonding strength and wear resistance with diamond, and reducing the thermal damage and graphitization of diamond.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Xinglong Liu, Xinyao She, Quanliang Jia, Dong Xu, Jiamao Li
Summary: This paper presents a controllable synthesis of 6Ca(0.61)Nd(0.26)TiO(3)-4Nd(Zn1/2Ti1/2)O-3 (6CNT-4NCT) nanopowders using the citrate precursor method. The as-synthesized powder showed good dispersion and high sinterability, leading to well-sintered 6CNT-4NCT ceramics with attractive dielectric properties. The study provides valuable insights into the synthesis and characterization of this material for potential applications in the field of microwave devices.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Mengyang Shi, Juan Liu, Jiamao Li, Jingrong Xu, Ming Jiang, Dong Xu
Summary: Dense bulk ZnO-Bi2O3-Co2O3 varistor ceramics were prepared via flash sintering, and the impact of different electric fields on their properties was studied. The results indicate that increasing the electric field can lower the onset temperature of flash sintering and increase power consumption.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Mengyang Shi, Juan Liu, Bing Cui, Ming Jiang, Zhan Cheng, Yongtao Jiu, Bin Tang, Dong Xu
Summary: In this study, high-performance ZnO-Bi2O3 based low-voltage varistors were prepared by doping In2O3. Co-doping In2O3 with TiO2 improved the grain boundary barrier and increased the nonlinear coefficient while decreasing the leakage current. The best electrical performance was achieved when the doping amount of In2O3 was 0.012 mol%.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Zhentao Wang, Mengyang Shi, Juan Liu, Jiamao Li, Lei Zhang, Zhan Cheng, Jian Qin, Yongtao Jiu, Bin Tang, Dong Xu
Summary: In this study, (Al, Ta) co-doped TiO2 (ATTO) ceramics were prepared by flash sintering under different electric fields, with the best comprehensive performance observed at 550 V/cm. The ATTO ceramics exhibited single rutile structure, with increasing grain size as the electric field increased. XPS and IS results indicated that the good dielectric properties were due to the internal barrier layer capacitance effect, showing great potential for dual-function capacitive varistor ceramics.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Fengting Cao, Zequan He, Tiegang Wang, Guangyao Gao, Qixiang Fan, Yanmei Liu, Jubo Peng, Shanshan Cai, Dong Xu, Jiantao Tao
Summary: The synergistic inhibition effect of sodium phytate and benzotriazole on 20SiMn steel in seawater was studied. They form a protective bilayer film, with benzotriazole acting through chemisorption and sodium phytate through physisorption. The combination of the two shows a better inhibition efficiency.
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Zhentao Wang, Tianyu Li, Jiamao Li, Feiwen Zhao, Ruzhong Zuo, Lei Zhang, Zhan Cheng, Dong Xu
Summary: (Al, Nb) co-doped TiO2 colossal dielectric ceramics were prepared using conventional sintering, flash sintering, and two-step flash sintering methods. The flash sintering and two-step flash sintering reduced processing temperature by 20% and sintering time by 30 times compared to conventional sintering. The two-step flash sintering samples with finer grain size exhibited higher permittivity. The TSFS ceramic sample sintered at 1080 degrees C showed the best overall performance with a dielectric constant of 1.4 x 105, dielectric loss of 0.57 at 1 kHz, and a nonlinear coefficient of 5.8. The excellent dielectric properties were attributed to the internal barrier layer capacitance model.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Bing Cui, Pengbo Wang, Weixing Zhao, Zichao Ding, Ruzhong Zuo, Lei Zhang, Yongtao Jiu, Zhan Cheng, Jian Qin, Yucan Fu, Dong Xu
Summary: In order to improve the wear resistance and solve the thermal damage of brazed diamond, a new boron-free filler alloy Ni-Cr-Si-Cu-Sn with Zr was proposed. The microstructure of the filler alloy and the morphology of interface carbides were observed. The graphitization of brazed diamond was analyzed by Raman spectroscopy. The hardness and grinding properties of brazed diamond were measured. The results show that the composite alloy has smaller grain size, better morphology of brazed diamond, reduced graphitization and thermal damage of diamond. The addition of Zr in the alloy improved the interfacial hardness and grinding performance of diamond sample, and the uniform carbide connection ensured the high strength control of the composite alloy on the diamond.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Zhentao Wang, Haisheng Zheng, Lei Zhang, Zhan Cheng, Feiwen Zhao, Ruzhong Zuo, Tianyu Li, Dong Xu
Summary: In this study, (M0.5Ta0.5)(0.05)Ti0.95O2 (M=Al, Ga, In) ceramic materials were successfully prepared by Flash Sintering (FS) under an electric field of 550 V cm(-1) at 1200 degrees C for 18 min. The influences of different ionic radius on flash sintering behavior, crystal structure, microstructure and dielectric properties of TiO2-based colossal permittivity (CP) ceramics were systematically investigated. FS can reduce the sintering temperature by 200 degrees C and shorten the sintering time by more than 12 times. The results show that all flash sintering samples were pure rutile TiO2 structure.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Shuaishuai Feng, Tian Jin, Banglun Wang, Zhan Cheng, Chunxia Zhang, Sujuan Zhong, Dong Xu
Summary: The aim of this study is to improve the mechanical properties of diamond tools by brazing diamonds with a modified Ni-Cr filler alloy to achieve the reduction of thermal damage. Rare earth Pr doping into Ni-Cr filler alloy is brazed at 1080 degrees C under vacuum and tested for organization and properties. The results show that the doping of Pr refines the grain size and carbide, improves the bonding strength of the diamond, and reduces the thermal damage.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Liang Zhang, Shuaishuai Feng, Nan Wang, Jiamao Li, Hailing Li, Dong Xu
Summary: In this study, (Sr + Sb) co-doped TiO2 colossal dielectric ceramics were successfully fabricated using flash sintering technology under an electric field of 500 V cm(-1). The flash sintering parameters, phase structure, and electrical properties of the ceramics were analyzed. Compared to conventional sintering methods, the flash sintering process reduced the sintering temperature by approximately 200 degrees C and the sintering time by 90% (18 min, 1150 degrees C). The co-doped TiO2 ceramics showed excellent dielectric properties (epsilon' > 10(4)). The successful preparation of co-doped rutile TiO2 dielectric ceramics expands the application range of flash sintering technology and holds great research significance.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Nan Wang, Tian Jin, Huawei Sun, Sujuan Zhong, Guodong Wen, Zhongfang Yan, Dong Xu
Summary: In this study, the properties of Ni-based filler alloy were improved by adding rare earth Sm and brazing at a temperature of 1080°C. Tests were conducted on the filler alloy and brazed joints using electron microscopy (SEM), energy spectroscopy (EDS), and X-ray diffractometry (XRD). The results showed that the addition of rare earth Sm refined the grain of the filler alloy, increased its hardness, and reduced the thermal damage of the diamond after welding.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Yizhi Du, Lina Hu, Liting Dong, Shuming Du, Dong Xu
Summary: This study aims to solve the icing problem of wind turbine blades in low-temperature environments and improve the power generation efficiency of wind turbines. Modified TiO2 particles, butyl acetate solvent, polyaspartic acid ester polyurea (PAE polyurea), and Crestron N75 curing agent were mixed and sprayed on the epoxy resin board surface. The results showed that the mechanical stability and anti-icing performance of the coating were optimal when the ratio of modified TiO2 particles to PAE polyurea was 1.5. This study provides a simple method to prepare a robust superhydrophobic coating and promotes the application of superhydrophobic coatings in the field of passive anti-icing of wind turbine blades.
Article
Chemistry, Physical
Qing Ni, Yu Li, Zongchao Zhu, Zhexiang Yu, Dong Xu, Xiaoming Hua, Yi Zhen, Lin Ge, Lei Bi
Summary: The authors present a stable anode design for high-efficiency electrolysis at high current densities, integrating a nano La0.6Sr0.4CoO3-δ (LSC) catalyst network with robust microchannels. This controlled structured electrode allows rapid gas diffusion, provides sufficient active sites, and ensures firm anode-electrolyte interface adhesion, resulting in highly stable and efficient electrolysis. The as-prepared cell structure exhibits an extremely low polarization resistance of 0.010Ωcm² and demonstrates high durability at large current densities for over 100 hours at 800°C. The findings suggest the potential application of this design in high-efficiency energy conversion systems.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Metallurgy & Metallurgical Engineering
Ming Jiang, Zhan Cheng, Dan Zhao, Lei Zhang, Dong Xu
Summary: In this study, Mg-doped CCTO thin films were prepared by a modified sol-gel method, and a comparative study on their microstructure and electrical properties was carried out. The results showed that Mg doping could reduce the grain size of CCTO films and improve the dielectric constant and frequency stability.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
