Article
Materials Science, Ceramics
Ye Zhao, Qian Wang, Jun-Hu Lv, Xian Zhao, Chun-Ming Wang
Summary: In this study, Y-modified BaTiO3 ceramics with different yttrium doping levels were prepared, and BT-2.5Y showed the highest electrocaloric effect performance. This indicates that BT-100xY ceramics have great potential for applications.
CERAMICS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Yang Li, Wei Lin, Bo Yang, Fei Guo, Shifeng Zhao
Summary: In this study, the electrocaloric effect of Bi5Ti3AlO15 material was investigated, and a strategy to extend the temperature region of the effect was proposed. By slowing down and freezing the relaxation dynamics, and studying the evolution of nanodomains, a negative electrocaloric effect was achieved over an ultra-wide temperature range. These research findings are of great significance for refrigeration applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Ceramics
Qiumei Wei, Lovro Fulanovic, Kodumudi Venkataraman Lalitha, Mupeng Zheng, Yudong Hou, Mankang Zhu, Linjing Liu, Yunfei Chang, Rui Xue
Summary: Innovative cooling technologies are crucial for system design in many industries. This study explores the use of lead-free (Na1/2Bi1/2)(0.80)Sr-0.20(Zn1/3Nb2/3)(x)Ti1-xO3 ceramics, which exhibit a large electrocaloric effect (ECE) and an extended working temperature range. The excellent ECE performance is attributed to the evolution of polar nanoregions. This material shows promise for solid-state refrigeration systems with a broad range of operating temperatures.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Shibnath Samanta, Gopinathan Anoop, WooJun Seol, Seong Min Park, HyunJin Joh, Je Oh Choi, Dante Ahn, Sanjith Unithrattil, Hoon Kim, Jiwon Yeom, Seungbum Hong, Ji Young Jo
Summary: In this study, the performance and reliability of solution-processed Y:HfO2 thin films in electrocaloric effect (ECE) were investigated. The results showed that the Y:HfO2 thin films exhibited a large and reliable ECE response, making them suitable for on-chip microelectronic cooling devices.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Materials Science, Ceramics
Ying Hou, Jiacheng Li, Sheng Guo, Tingting Ye, Junfeng Ding
Summary: The study investigates the effect of heterovalent doping on the EC response and energy storage performance of Ba(Sn, Ti)O-3 relaxor ferroelectrics, demonstrating improved temperature change and energy storage density with high efficiency.
JOURNAL OF ELECTROCERAMICS
(2021)
Article
Engineering, Multidisciplinary
FeiHong Du, ZhiWu Song, YuTao Xu, DongLin Han, Qiang Li, ShanYu Zheng, JiaHe Shen, XiaoShi Qian
Summary: Multi-element B-site substituted BaTiO3 ceramics exhibit an enhanced electrocaloric effect and refrigeration capacity, with an operating temperature window covering room temperature for practical use. The multi-element substitution improves the overall electrocaloric effect performance, allowing for a high degree of polar reorientation and utilization of large polar entropy by the external electric field.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2023)
Article
Nanoscience & Nanotechnology
David Gracia, Sara Lafuerza, Javier Blasco, Marco Evangelisti
Summary: This study investigates the dielectric and electrocaloric properties of Ba1-yCayTi1-xHfxO3. The addition of Hf/Ca alters the temperature and width of the ferroelectric-paraelectric phase transition. The electrocaloric effect is enhanced with increasing Hf/Ca substitutions, but the electrocaloric responsivity gradually decreases.
Article
Nanoscience & Nanotechnology
Geng Huangfu, Jianwei Chen, Jie Jiao, Yiping Guo, Dwight Viehland, Haosu Luo
Summary: In-situ polarized Raman scattering was used to study the lattice structure evolutions induced by temperature and electric field in (1-x%)(Na0.5Bi0.5)TiO3-x%BaTiO3 (NBT-xBT) relaxor ferroelectrics. It was found that electric field cannot induce ferroelectric state after the disappearance of frequency dispersion, indicating a competition between relaxor characteristics and long-range ferroelectric order with temperature. Additionally, no P4bm-P4mm transition was observed under high electric fields. This work explains the Raman scattering and lattice evolutions of NBT-8BT and proposes a method for analyzing Raman spectrum that is generally applicable to other ferroelectrics.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Shubhpreet Kaur, Mehak Arora, Sunil Kumar, Parambir Singh Malhi, Mandeep Singh, Anupinder Singh
Summary: This study proposes advancements in modern refrigeration technology based on the electrocaloric effect, demonstrating the performance of the (Na0.41K0.09Bi0.50)(Ti1-xMgx)O-3 material. The MgO modified NBT-KBT solid solution exhibits abnormal electrocaloric effect at high doping levels, showing potential applications in the cooling field.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
M. V. Gorev, V. S. Bondarev, I. N. Flerov, K. Bormanis, E. Birks
Summary: Using the Landay thermodynamic potential, the T-E phase diagrams and electrocaloric effect in solid solutions (1-x)Pb(Ni1/3Nb2/3)O-3-xPbTiO3 (PNN-PT) were studied. The composition, temperature range, and electric field parameters significantly influenced the phase transitions, stability of crystalline phases, and electrocaloric properties. The intensive electrocaloric effect of the 0.8PNN-0.2PT compound indicates its potential as a solid-state refrigerant.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Ruowei Yin, Junjie Li, Xiaopo Su, Shiqiang Qin, Chengye Yu, Yuxuan Hou, Chuanbao Liu, Yanjing Su, Lijie Qiao, Turab Lookman, Yang Bai
Summary: A multilayer ferroelectric structure with interlayer synergistic phase transitions is proposed to enhance the electrocaloric effect in ferroelectric materials, resulting in improved cooling performance for practical refrigeration applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Thermodynamics
Elian Bsaibess, Abdelhak Hadj Sahraoui, Christ Glorieux, Jan Leys, Jan Thoen, Stephane Longuemart
Summary: The electrocaloric heat production in BaTiO3-based multilayer ceramic capacitors with Y5V specification was measured directly using an adiabatic calorimeter setup. Applying an electric field of 30 MVm(-1) resulted in a heat release of 0.94 J g(-1) and an electrocaloric temperature change of 0.46 K, which is consistent with previous studies.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Materials Science, Ceramics
Siyue Wei, Xue Chen, Guangzhi Dong, Laijun Liu, Qi Zhang, Biaolin Peng
Summary: Two PSINT medium-entropy ceramics were successfully synthesized, and the two-step-SPS processed sample exhibited a large electrocaloric effect at a very low electric field and a broad working temperature range.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Magdalena Krupska-Klimczak, Irena Jankowska-Sumara, Sylwia Sowa
Summary: The electrocaloric properties of commercially modified Pb(Zr,Ti)O-3- (PZT)-based soft and hard ceramics were investigated. Both positive and negative electrocaloric temperature change were observed in all ceramics. The negative electrocaloric effect was related to the phase transition in PZT ceramics, while the positive effect was observed in both soft and hard ceramics.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Yang Yin, Yucheng Tang, Wenyuan Pan, Aizhen Song, Jingru Yu, Boping Zhang
Summary: Research has shown that nonergodic relaxor ferroelectrics near the morphotropic phase boundary are favorable for enhancing the piezoelectric and electrostrain properties of materials, thereby reducing the energy barrier for polarization rotation.
CERAMICS INTERNATIONAL
(2021)