Article
Materials Science, Ceramics
Zheng Sun, Wenxu Liu, Qiuyang Li, Zhi Tao, Yemei Han
Summary: Introducing Bi(Zn2/3Nb1/3)O-3 successfully improved the dielectric performance of (1-x) BZT20-xBZN composite ceramics, with sample 0.94BZT20-0.06BZN exhibiting enhanced dielectric constants and a higher degree of relaxor behavior (γ=1.91).
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Najah Rhimi, N. Dhahri, M. Khelifi, E. K. Hlil, J. Dhahri
Summary: This work focuses on studying the properties of sodium bismuth titanate (NBT) ceramic, including its structure, optical properties, and electrical properties. The material exhibited a poly-crystalline structure with a rhombohedral shape, and a grain size of 29.17 μm. The dielectric loss and dielectric constant increased with frequency, and the conduction mechanism followed the correlated barrier hopping (CBH) and small polaron hopping (SPH) models. The study provides valuable insights into the physical characteristics of NBT and its potential applications in the industry.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Manish Badole, Hari Narayanan Vasavan, Samriddhi Saxena, Asish Kumar Das, Velaga Srihari, Sunil Kumar
Summary: The effects of La3+ and Al3+ substitution on the structural, dielectric, and piezo-electric properties of (1-x)(K0.5Bi0.5)TiO3-xLaAlO3 ceramics were investigated. With the increase in LAO content, a decrement in tetragonal distortion and an increase in cubic symmetry were observed. The incorporation of LAO in KBT resulted in an improved relaxor behavior and a suppression of oxygen vacancies. The piezo-electric properties were enhanced, with the 3% LAO-doped sample exhibiting the highest piezo-electric charge coefficient and improved piezo-electric voltage coefficient. An energy harvesting experiment was performed on the poled 3% LAO-doped ceramic, showing promising results under normal finger tapping.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Ritesh Verma, Ankush Chauhan, Khalid Mujasam Batoo, Muhammad Hadi, Emad H. Raslan, Rajesh Kumar, Muhammad Farzik Ijaz, Abdulaziz K. Assaifan
Summary: The synthesis of vanadium-doped BCZT ceramic oxides was reported in this paper, confirming the existence of a solubility limit of V in BCZT ceramics. Analysis revealed the influence of crystal structure and formation of oxygen vacancies on the luminescence and electrical properties of the material.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Hemaunt Kumar, Puneet Negi, Jitendra Pal Singh, R. C. Srivastava, Subia Ambreen, K. Asokan
Summary: This study investigates the structural, electrical and transport properties of cobalt nanoferrites (CoFe2O4) doped with dysprosium cation (Dy3+) on the iron (Fe3+) site. The results confirm that the samples maintain a pure cubic spinel structure. The average crystallite size ranges from 49 to 72 nm and is not affected by the concentration of Dy3+ ions. The lattice parameters vary from 8.34 Å for pristine CoFe2O4 to 8.39 Å for the sample with the highest doping concentration (Dy(x) = 0.15). The porosity decreases with increasing Dy3+ ion concentration. The electrical properties are analyzed through dielectric behavior at different frequencies and temperatures. The ferrite with Dy(x) = 0.15 exhibits the highest dielectric constant in the range of 441 to 5234, indicating its suitability for memory storage devices.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Prachi Chaudhary, Rishabh Shukla, Samiksha Dabas, O. P. Thakur
Summary: This study investigates the effects of Nb substitution on the properties of a multiferroic solid solution, revealing significantly enhanced magnetic and dielectric properties in Nb-substituted samples, making them suitable for memory device applications. Additionally, changes in the structure and the coupling between electric and magnetic dipoles were confirmed through various analytical techniques.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Huajie Luo, He Qi, Shengdong Sun, Lu Wang, Yang Ren, Hui Liu, Shiqing Deng, Jun Chen
Summary: Achieving high piezoelectric performance in the (1-x)(Na0.5Bi0.5)TiO3-x(0.9BaTiO(3)-0.1BiAlO(3)) ternary system through crystal structure design, with the incorporation of BiAlO3 suppressing structural distortion and enabling extensive and reversible phase transformation under electric field. In-situ electric field synchrotron X-ray diffraction reveals that the crystal lattice of the R3c phase responds more flexibly to the electric field than that of the P4bm phase. Enhanced piezoelectric response is attributed to activated domain switching and lattice strain enhancement from subtle phase structure.
Article
Chemistry, Physical
Najah Rhimi, N. Dhahri, J. Laifi, F. Bourguiba, N. Abdelmoula, J. Dhahri, C. Castro, J. Juraszek
Summary: This research investigates the enhancement of electrical and optical performance of Na0.5Bi0.5TiO3 ceramic by introducing BiCu0.75W0.25O3 solid solution, resulting in a novel Lead-free solid solution 0.995(Na0.5Bi0.5TiO3)-0.005(BiCu0.75W0.25O3) with improved properties suitable for power electronic devices.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Physical
Huajie Luo, Shiyu Tang, Hui Liu, Zheng Sun, Baitao Gao, Yang Ren, He Qi, Shiqing Deng, Houbing Huang, Jun Chen
Summary: The structures of 6BT and 7BT ceramics were investigated, and the results show that their refined structures significantly affect their piezoelectric properties. The less pronounced structure distortion and oxygen octahedral tilting in 7BT contribute to an enhanced piezoelectricity.
JOURNAL OF MATERIOMICS
(2022)
Article
Materials Science, Ceramics
Tian Wei, Kai Liu, Pengyuan Fan, Daju Lu, Baohua Ye, Changrong Zhou, Huabing Yang, Hua Tan, David Salamon, Bo Nan, Haibo Zhang
Summary: By partially substituting NaNbO3 ceramics with a relaxor ferroelectric, this study successfully improved the performance of energy storage materials. The introduction of nanodomains of the relaxor ferroelectric effectively hindered the generation of the ferroelectric phase, allowing the material to possess both large polarization strength and near-zero residual polarization.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Faysal Naeem, Mohsin Saleem, Hamid Jabbar, Gulraiz Tanvir, Fiza Asif, Abrar H. Baluch, Muhammad Irfan, Abdul Ghaffar, Adnan Maqbool, Tayyab Rafiq
Summary: This work successfully synthesized lead-free piezoelectric ceramics 0.74(Bi0.5Na0.5TiO3)-0.26(SrTiO3) (BNT-ST26) and niobium-substituted (Nb-BNT-ST26), and confirmed the effect of niobium substitution on the perovskite phase structure of BNT-ST26 ceramics through X-ray diffraction and Raman spectra. Electromechanical properties revealed that addition of 0.5% niobium resulted in the optimal piezoelectric performance and dielectric effect, making it suitable for high-temperature, stable, frequency-dependent, lead-free piezoelectric devices.
Article
Chemistry, Physical
Sushmita Dwivedi, Manish Badole, Tanvi Pareek, Sunil Kumar
Summary: This study aims to experimentally verify proposed models for the behavior of polymer-ceramic composites and design a new composite material with excellent piezoelectric performance. By adding ceramic fillers, the thermodynamic stability of the composite was improved, leading to enhanced dielectric and piezoelectric properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
A. Singha, S. Praharaj, S. K. Rout, R. Verma, D. Rout
Summary: This study investigates the ferroelectric and dielectric behavior in lead-free ceramic, speculating the emergence of a relaxor phase due to the evolution of highly polarizable dipolar entities of different symmetries. The temperature and frequency-insensitive dielectric behavior observed in the ceramic may be correlated to the gradual crossover of polar nano regions.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Chemistry, Physical
Sanyukta Ghosh, Umasankar Rout, Krushna Kumari Raut, Anirudha Karati, Gerda Rogl, Peter Franz Rogl, Ernst Bauer, B. S. Murty, Ramesh Chandra Mallik
Summary: Filling the voids of a skutterudite material with suitable electropositive elements can greatly affect the power factor by altering carrier concentration. Doping and filling can further enhance the thermoelectric properties. Electropositive n-type fillers have been successfully used in Co4Sb12. In this study, Fe was substituted as a p-type dopant in S0.15Co4Sb12, resulting in the highest zT value.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
S. Aydi, W. Cherif, F. Khammassi, A. J. M. Sales, N. M. Ferreira, N. Zouari
Summary: Polycrystalline La0.65Ca0.25Sr0.1MnO3 manganite was prepared by the sol-gel method, and the single-phase compound exhibited semiconductor behavior, with conduction mechanism governed by grain boundaries. Structural and electrical analyses were carried out, revealing transport properties dominated by thermally activated small polaron jumping and Mott-variable range hopping processes at different temperatures.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Ceramics
Woo-Seok Kang, Jung-Hyuk Koh
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2015)
Article
Nanoscience & Nanotechnology
Woo-Seok Kang, Dong-Jin Shin, Kyung-Ho Cho, Chang-Eui Seo, Soon-Jong Jeong, Jung-Hyuk Koh
SCIENCE OF ADVANCED MATERIALS
(2016)
Article
Materials Science, Ceramics
Chang-Hyo Hong, Zhongming Fan, Xiaoli Tan, Woo-Seok Kang, Chang Won Ahn, Yooleemi Shin, Wook Jo
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2018)
Article
Materials Science, Multidisciplinary
Dong-Jin Shin, Woo-Seok Kang, Jung-Hyuk Koh, Kyung-Ho Cho, Chang-Eui Seo, Sang-Kwon Lee
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2014)
Article
Materials Science, Ceramics
Sun-Woo Kim, Tae-Gon Lee, Dae-Hyeon Kim, Eun-Ji Kim, Dae Su Kim, Woo-Seok Kang, Wook Jo, Sang Jin Lee, Seung Ho Han, Hyung-Won Kang, Youn-Woo Hong, Sahn Nahm
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2019)
Article
Chemistry, Physical
Hwang-Pill Kim, Geon-Ju Lee, Jae-Hyeon Cho, Woo-Seok Kang, Sang-Goo Lee, Ho-Yong Lee, Wook Jo
Summary: The strain behavior of PMN-PT single crystals on different orientations was studied, revealing that the seemingly different strain behavior originated from the same mechanism, ruling out the contribution from polarization rotation. The experiment results suggested that the polarization vectors affecting the strain properties in PMN-PT are not restricted to a unique direction imposed by crystallographic symmetry.
JOURNAL OF MATERIOMICS
(2021)
Article
Materials Science, Ceramics
Woo-Seok Kang, Chang-Hyo Hong, Young-Jin Lee, Gangho Choi, Dong-Jin Shin, Dong-Hwan Lim, Soon-Jong Jeong, Wook Jo
JOURNAL OF THE KOREAN CERAMIC SOCIETY
(2019)
