Article
Materials Science, Ceramics
P. T. Tho, N. Tran, M. Y. Lee, N. Dang, P. T. Phong, L. T. Ha, H. T. Van, N. N. Tran, D. T. Khan, B. W. Lee, C. T. A. Xuan
Summary: Ceramic Bi1-xNdxFeO3 solid solutions with doping concentration ranging from 0.10 to 0.20 were prepared to investigate their structural evolution and magnetic properties. The study revealed a transition from polar rhombohedral to antipolar orthorhombic structures, along with the emergence of weak ferromagnetism at high doping concentrations due to the destruction of the cycloidal spin structure. Additionally, magnetic aging behavior at room temperature confirmed the contribution of phase boundary spins to the magnetic properties.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
L. T. Ha, C. T. A. Xuan, K. T. Tam, N. D. Co, B. M. Quy, N. V. Dang, P. T. Phong, P. D. Thang, N. D. Long, P. M. An, N. D. Vinh, P. T. Tho
Summary: This study reports the detailed structural phase transition induced by chemical substitution in Bi1-xPrxFeO3 polycrystalline ceramics. Pr3+ substitution is found to destabilize the polar R3c symmetry due to the chemical strain effect caused by the large ionic radius mismatch at the Bi-site. The R3c rhombohedral phase can only be stabilized up to 14 mol% of Pr doping; the phase transition starts to appear at a higher Pr concentration, forming a morphotropic phase boundary between the R3c rhombohedral and Pbam orthorhombic phases. Increasing Pr concentration causes the magnetic transition from a pure antiferromagnetic to a weak ferromagnetic state due to the evolution of crystal structure.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Sushrisangita Sahoo, Abhinav Yadav, K. P. Andryushin, P. K. Mahapatra, R. N. P. Choudhary
Summary: The (Gd1-xBax)(Fe1-xTix)O-3 ceramics with different compositions (x = 0.0-0.4) were systematically investigated for their structural transformation, ferro-paraelectric and magnetic ordering induced dielectric phase transitions, multiferroic properties, relaxation and conduction mechanisms. The chemical route was used for material synthesis. Rietveld refinement revealed a structural transformation from orthorhombic to mixed phase for x > 0.2. The analysis of FESEM micrographs indicated a decrease in grain size with the increase in BT in the composition. Dielectric anomalies were explained based on ferroelectric-paraelectric phase transition, polarization induced by a spin reorientation, and antiferromagnetic ordering. The multiferroic properties were studied through various plots. The compositions x = 0.1-0.3 showed improved magnetic properties, making them suitable for spintronic devices. The composition x = 0.3 exhibited a maximum magneto-electric coupling coefficient of 4.77 mV/cm.Oe, making it suitable for magnetoelectric coupling devices.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Yu Huang, Zhen Zhou, Liang Shu, Yue-Yu-Shan Cheng, Jin Luo, Jing-Feng Li
Summary: This study revealed the effect of strain engineering on the piezoelectricity of (100-x)%Bi1/2Na1/2TiO3-x%BaTiO3 (BNT-BTx) epitaxial films grown on Nb:SrTiO(3)100 (NSTO100) substrates, with the crystal structure affected by film thickness. A phase transition from monoclinic to rhombohedral phases was observed in the BNT-BT2 films due to coherent strain imposed by the substrates, leading to a significant enhancement in effective piezoelectric constant. This work may provide a feasible way to improve the piezoelectric properties of other perovskite piezoelectric films.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Inorganic & Nuclear
Valery R. Sobol, Kazimir Yanushkevich, Siarhei Latushka, Dmitry Zhaludkevich, Kapiton N. Nekludov, Maxim Silibin, M. Sayyed, Nouf Almousa, Barys Korzun, Olga N. Mazurenko, Dmitry Karpinsky
Summary: The crystal structures of Bi1-xNdxFeO3 and Bi(1-x)Gd(x)FeO(3) solid solutions were investigated, showing changes in lattice dynamics due to increased dopant content. The effects of different dopant ions on phonon modes and structural transformations were discussed, with variations in intensity and position of reflectance lines observed.
Article
Engineering, Electrical & Electronic
Tingfang Tian, Feilong Chen, Zhaokuan Wen, Zhiguo Wang, Yongming Hu, Shengwen Shu
Summary: In this study, Sb2O5-doped AgNbO3 ceramics were prepared and their phase structure, microstructure, dielectric, and ferroelectric properties were investigated. The introduction of Sb5+ ions caused lattice shrinkage and grain size change. The dielectric constant significantly increased with Sb5+ introduction, and the phase transition temperatures shifted to lower temperatures. The AgNb0.98Sb0.02O3 ceramics exhibited relaxor antiferroelectric characteristics, resulting in higher recoverable energy density and energy efficiency compared to pure AgNbO3.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Ceramics
Manal Benyoussef, Moneim Zannen, Jamal Belhadi, Bouchaib Manoun, Zdravko Kutnjak, Damjan Vengust, Matjaz Spreitzer, Mimoun El Marssi, Abdelilah Lahmar
Summary: Lead-free relaxor ferroelectric Na-0.5(Bi1-xNdx)(0.5)TiO3 ceramics were synthesized using the solid-state method, showing structural transitions with increasing Nd concentration and improvements in dielectric properties and energy storage capabilities.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Jing Chen, Nan Su, Xiao Li Zhu, Xiao Qiang Liu, Jin-Xing Zhang, Xiang Ming Chen
Summary: Electric-field-controlled magnetism is achieved in the Bi1-xGdxFeO3 system, involving a field-induced transition of Pna21/R3c and reversible magnetism with annealing. This leads to more significant electric-field-controlled magnetism compared to other systems in a wider composition range.
JOURNAL OF MATERIOMICS
(2021)
Article
Materials Science, Ceramics
Ju-Hyeon Lee, Geon-Ju Lee, An-Phuc Hoang, Till Froemling, Thuy-Linh Pham, Jong-Sook Lee, Wook Jo
Summary: Dielectrics for automobile applications require high temperature reliability. Bi(1/2)Nau(1/2)TiO(3)-based materials are excellent candidates with large temperature-insensitive dielectric responses and a maximum dielectric permittivity temperature of up to 300 degrees C. However, their high dielectric loss increases exponentially above 200 degrees C due to ionic conduction. This study demonstrates that introducing a sodium deficiency and thermal annealing can effectively suppress the impact of ionic conduction on dielectric loss, elevating the temperature insensitivity of the dielectric loss up to approximately 300 degrees C.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Yuchen Liu, Yu Zhou, Dechang Jia, Zhihua Yang, Wenjiu Duan, Daxin Li, Shuzhou Li, Ralf Riedel, Bin Liu
Summary: Using ab-initio calculations, the atomic structure and mechanical properties of amorphous silicoboron carbonitride ceramics with 13 different compositions in the Si-BN-C phase diagram were investigated. The chemical bonds and local structures in the amorphous network are dependent on the elemental composition. The mechanical properties of SiBCN ceramics are greatly influenced by their local structural characteristics. SiB2C3N2 and SiB3C2N3 with low Si contents and moderate C and/or BN contents exhibit high elastic moduli, high tensile/shear strengths, and good debonding capability. The optimization of SiBCN ceramics can be guided based on these discoveries.
JOURNAL OF ADVANCED CERAMICS
(2023)
Article
Chemistry, Multidisciplinary
Abid Zaman, Asad Ali, Muhammad Anas, Muhammad Kamran, Amir Sohail Khan, Vineet Tirth, Jehan Y. Al-Humaidi, Amir Arabi, Moamen S. Refat, Rafi Ullah
Summary: (Bi1-xLax)FeO3 (0.00 < x < 0.06) ceramics were synthesized through a mixed oxide route, and their structural, morphological, optical, dielectric, and magnetic properties were investigated. All samples showed rhombohedral structures with the R3c space group and 161 space group number. BLFO samples exhibited high relative permittivity and the lowest tangent loss in the frequency range of 1-100 MHz. Optical studies revealed that the excitation energy increased with increasing La content. The magnetization was strongly affected by crystallite size and microstrain. The band gap energy increased with increasing La content. The overall result showed enhanced structural, dielectric, and optical properties in BFO ceramics with pure and doped La contents.
Article
Chemistry, Multidisciplinary
Abid Zaman, Asad Ali, Muhammad Anas, Muhammad Kamran, Amir Sohail Khan, Vineet Tirth, Jehan Y. Al-Humaidi, Amir Arabi, Moamen S. Refat, Rafi Ullah
Summary: (Bi1-xLax)FeO3 (0.00 < x < 0.06) ceramics were synthesized through a mixed oxide route and their structural, morphological, optical, dielectric, and magnetic properties were investigated. The samples exhibited rhombohedral structures with R3c space group and 161 space group number. BLFO samples showed high relative permittivity and the lowest tangent loss in the frequency range of 1-100 MHz. Optical studies revealed an increase in excitation energy with increasing La content. The magnetization was strongly influenced by crystallite size and microstrain. The band gap energy also increased with increasing La content. The overall result showed enhanced structural, dielectric, and optical properties in BFO ceramics with pure and doped La contents.
Article
Materials Science, Multidisciplinary
Qing Xi, Adili Aiyiti, Lan Dong, Yuanyuan Wang, Jun Zhou, Xiangfan Xu
Summary: This study measured the thermal conductivity of alpha-Fe2O3 nanowires and found an abnormal change near the Morin temperature, which is due to the angular dependence caused by the movement of magnetic domain walls.
Article
Physics, Multidisciplinary
Christopher D. O'Neill, Gino Abdul-Jabbar, Didier Wermeille, Philippe Bourges, Frank Kruger, Andrew D. Huxley
Summary: The study presents the phase diagram of PrPtAl in a magnetic field, revealing specific modulated magnetic states. Experimental evidence supports the QOBD theory's explanation of these states.
PHYSICAL REVIEW LETTERS
(2021)
Article
Materials Science, Ceramics
Shuai Cheng, Kehong Zhang, Qianshu Li, Boping Zhang, Jianguo Chen, Xinxin Yang, Jingtai Zhao, Guanghui Rao, Siqi Shi
Summary: In this study, multifunctional ceramics with Pr3+ doped in BNBT were successfully synthesized and exhibited improved piezoelectric properties. The ceramics underwent a phase transition and an increase in density with increasing doping level. Additionally, under excitation, the ceramics emitted bright red light. The Pr-doped BNBT ceramics show great potential for applications requiring electro-optic integration and coupling devices.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Qingyuan Hu, Huimin Liao, Xin Liu, Li Jin, Kexin Song, Yongyong Zhuang, Zhuo Xu, Vladimir Ya Shur, Xiaoyong Wei
Summary: In this study, a thermal annealing and high temperature poling approach is proposed to enhance the piezoelectricity of Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 crystals. The manipulation of defects and defect polarization orientation results in a more polarized crystal. The improved piezoelectric property achieved under a maintained Curie temperature indicates the feasibility of the approach.
JOURNAL OF MATERIOMICS
(2023)
Article
Nanoscience & Nanotechnology
Wen Wang, Leiyang Zhang, Wenjing Shi, Yule Yang, Denis Alikin, Vladimir Shur, Zhihao Lou, Dong Wang, Amei Zhang, Jinghui Gao, Xiaoyong Wei, Hongliang Du, Feng Gao, Li Jin
Summary: In this paper, a cooperative optimization strategy is proposed to achieve outstanding energy-storage performance in NBST-based ceramics. Substituting NN for NBST generates an ergodic state and induces polar nanoregions. Applying VPP to the ceramics further increases compactness and breakdown strength. The optimized ceramics possess improved energy-storage characteristics and temperature adaptability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Alexander Abramov, Boris Slautin, Victoria Pryakhina, Vladimir Shur, Andrei Kholkin, Denis Alikin
Summary: We studied the electronic transport and resistive switching phenomena in polycrystalline bismuth ferrite using advanced conductive atomic force microscopy (CAFM). Contrary to many macroscopic methods, we demonstrate that resistive switching in bismuth ferrite is caused by pure electronic processes of trapping/releasing electrons and injection of electrons by the scanning probe microscopy tip. The electronic transport is comprehensively described by the combination of the space charge limited current model, while the presence of a built-in subsurface charge makes the Schottky barrier at the interface less important.
Article
Chemistry, Physical
Wen Wang, Leiyang Zhang, Yule Yang, Wenjing Shi, Yunyao Huang, D. O. Alikin, V. Ya. Shur, Zhihao Lou, Amei Zhang, Xiaoyong Wei, Dong Wang, Feng Gao, Hongliang Du, Li Jin
Summary: This study achieved comprehensive exceptional energy storage performance in Na0.5Bi0.5TiO3-Sr0.85Bi0.1TiO3 (NBT-SBT)-based ceramics through stepwise optimization by substituting Bi(Mg0.5Sn0.5)O-3 (BMS) and optimizing the formation process. The introduction of Mg2+ and Sn4+ ions at the B-site induced polar nanoregions, and the viscous polymer process (VPP) improved the polarization difference and breakdown strength. As a result, the ceramics exhibited ultrahigh energy storage density and high efficiency, along with excellent temperature adaptability.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Sergey Kudryashov, Galina Kriulina, Pavel Danilov, Evgeny Kuzmin, Alexey Kirichenko, Nikolay Rodionov, Roman Khmelnitskii, Jiajun Chen, Elena Rimskaya, Vladimir Shur
Summary: Natural IaA+B diamonds were exposed to laser pulses, resulting in the formation of photoluminescent nanostructured microtracks. The laser exposure led to an increase in the yield of NV centers and a decrease in the yield of N3a, H4, and H3 centers. The attachment of vacancies to nitrogen centers and the splitting of highly aggregated nitrogen centers were considered as the mechanisms behind these observations.
Article
Crystallography
Evgeniy Savelyev, Andrey Akhmatkhanov, Mikhail Kosobokov, Herve Tronche, Florent Doutre, Tommaso Lunghi, Pascal Baldi, Vladimir Shur
Summary: This experimental study investigates the kinetics of abnormal domain structure in lithium niobate single crystals with a surface layer modified by soft proton exchange. Two types of domain structure evolution were observed: the traditional growth of hexagonal domains at fields higher than 21.5 kV/mm and the abnormal growth of stripe domains at fields ranging from 3.8 to 21.5 kV/mm. The formation and growth of stripe domains were analyzed using a modified Kolmogorov-Avrami approach, and a controllable creation of quasi-periodic stripe domains was demonstrated. The abnormally low threshold fields were attributed to the presence of a built-in field induced by soft proton exchange.
Article
Chemistry, Analytical
Sergey Kudryashov, Elena Rimskaya, Evgeny Kuzmin, Galina Kriulina, Victoria Pryakhina, Andrey Muratov, Roman Khmelnitskii, Evgeny Greshnyakov, Pavel Danilov, Vladimir Shur
Summary: Natural diamonds were investigated using advanced chemical and structural analytical tools to comprehensively characterize their optically blind and optically active nitrogen impurity centers. The study established compositional relationships between X-ray photoelectron spectroscopy and Fourier-transform infrared vibrational spectroscopy signals of nitrogen impurity defects, and correlated depth-dependent spatial distributions of photoluminescence-active nitrogen defects with the carbon lattice signals. The study also revealed connections between local structural defects and stress-sensitive impurity distributions in bulk diamonds. These findings demonstrate the instrumental opportunities for in situ studies of diamond micro-features.
Article
Materials Science, Ceramics
Xiyu Ma, Wenjing Shi, Yule Yang, D. O. Alikin, Y. Ya Shur, Jinghui Gao, Xiaoyong Wei, Gang Liu, Hongliang Du, Li Jin
Summary: Electrocaloric refrigeration is an emerging solid-state technology with advantages of high efficiency, miniaturization, eco-friendliness, and low cost. This paper investigates Ba(Ti1-xSnx)O-3 ceramics and reveals their structural, dielectric, ferroelectric, electrocaloric, and electrostrictive characteristics. The results show that increasing Sn4+ concentration leads to lower dielectric peaks and a phase diagram is constructed based on dielectric characteristics. The study also demonstrates a giant adiabatic temperature change of 6.36 K in the x = 0.04 ceramic sample and temperature and composition-insensitive electrostrictive behavior.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
L. V. Gimadeeva, Q. Hu, X. Wei, D. O. Alikin, V. Ya. Shur
Summary: The influence of cooling rate on the domain structure and piezoelectric properties of barium titanate ceramics was investigated. It was found that a higher cooling rate led to larger domain sizes, resulting in an increased average piezoelectric response due to better polarization alignment.
Article
Optics
Yulia Gulina, Jiaqi Zhu, Alexey Gorevoy, Mikhail Kosobokov, Anton Turygin, Boris Lisjikh, Andrey Akhmatkhanov, Vladimir Shur, Sergey Kudryashov
Summary: Double-track microstructures were induced in a z-cut lithium niobate crystal using 1030nm 240fs ultrashort laser pulses. The topography of the microstructures was characterized using atomic force microscopy in piezoelectric response mode. The spatial positions of laser-induced modification regions inside the crystal could be predicted using simple analytical expressions.
Article
Polymer Science
Vladimir Botvin, Anastasia Fetisova, Yulia Mukhortova, Dmitry Wagner, Sergey Kazantsev, Maria Surmeneva, Andrei Kholkin, Roman Surmenev
Summary: This study fabricated magnetoactive scaffolds using a copolymer and magnetite nanoparticles modified with citric and oleic acids. The scaffolds exhibited a more homogeneous distribution of the magnetic filler and increased crystallinity when filled with citric acid-modified Fe3O4 nanoparticles.
Article
Physics, Applied
Evgeniy Savelyev, Andrey Akhmatkhanov, Boris Slautin, Herve Tronche, Florent Doutre, Tommaso Lunghi, Pascal Baldi, Vladimir Shur
Summary: This paper presents the results of an experimental study on the local polarization reversal and domain creation in lithium niobate single crystals using a biased tip of scanning probe microscope (SPM). The study shows that by modifying the surface layer with soft proton exchange (SPE), isolated domains and stripe domain structures can be created. The study also demonstrates that the creation of domains can be controlled by different switching modes, leading to improved regularity of the domain structure.
JOURNAL OF ADVANCED DIELECTRICS
(2023)
Article
Materials Science, Ceramics
Nikita A. Boldyrev, Eugene I. Sitalo, Lidia A. Shilkina, Alexander V. Nazarenko, Andrei D. Ushakov, Vladimir Y. Shur, Larisa A. Reznichenko, Ekaterina V. Glazunova
Summary: In this study, ceramics with quasi-binary concentration were prepared and their crystal structure, dielectric properties, and piezoelectric performance were investigated. The results showed that these ceramics had a cluster morphology and exhibited relaxor-like behavior.
CERAMICS-SWITZERLAND
(2023)
Article
Materials Science, Biomaterials
Denis Alikin, Vladimir Yuzhakov, Larisa Semiletova, Vladislav Slabov, Dmitrii Kuznetsov, Lubov Gimadeeva, Vladimir Shur, Svitlana Kopyl, Andrei Kholkin
Summary: Self-organized peptides are unique materials with diverse applications in biology, medicine, and nanotechnology. A new method for controlled deposition of solid films of diphenylalanine (FF) has been proposed, which shows advantages over previous liquid phase crystallization methods. The study investigates the mechanism of solid-state transformation from amorphous to crystalline phase and highlights the critical role of water diffusion in the growth of FF films.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(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)
