Article
Chemistry, Multidisciplinary
Mingfang Shu, Bingbing Yang, Miao Liu, Shunjin Zhu, Sumei Li, Chengbing Pan, Jiamingzhu Wang, Lihua Yin, Jie Yang, Xuebin Zhu, Yuping Sun
Summary: The study demonstrates the successful fabrication of lead-free piezoelectric thin films based on BiFeO3 using a solid solution method, achieving a significant increase in effective piezoelectric coefficient to over 500 pm/V.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Materials Science, Ceramics
Kun Zhu, Baijie Song, Guanglong Ge, JinFeng Lin, Fei Yan, Liuxue Xu, Hao Yan, Bo Shen, Jiwei Zhai, Xiujian Chou
Summary: Adding Bi(Fe0.95Mn0.03Ti0.02)O-3 creates a long-range ordered/short-range disordered nanodomain coexisting structure in the thin films, enhancing their piezoelectric properties significantly. This coexisting domain structure can reduce potential barrier and hysteresis, and achieve long-range reversal under external electric field.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Multidisciplinary Sciences
Jun Li, Corey Carlos, Hao Zhou, Jiajie Sui, Yikai Wang, Zulmari Silva-Pedraza, Fan Yang, Yutao Dong, Ziyi Zhang, Timothy A. Hacker, Bo Liu, Yanchao Mao, Xudong Wang
Summary: In this study, a promising solution that integrates piezoelectricity, stretchability, and biocompatibility in one material system was presented, which is a critical step towards tissue-compatible biomedical devices.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
Feier Ni, Kun Zhu, Jin Qian, Bo Shen, Jiwei Zhai
Summary: This study prepares high-performance lead-free piezoelectric thin films by introducing rare-earth elements to regulate the piezoelectric response of the films. The phase composition and microstructure of the films were observed using various testing methods to investigate the influence and transformation law of rare-earth element doping on lattice distortion.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Pariasadat Musavigharavi, Andrew C. Meng, Dixiong Wang, Jeffery Zheng, Alexandre C. Foucher, Roy H. Olsson, Eric A. Stach
Summary: The local atomic structure and nanoscale chemistry of ferroelectric aluminum scandium nitride thin films were investigated using advanced transmission electron microscopy techniques. The study revealed that in ultrathin films, the Sc alloying concentration and strain distribution become more pronounced.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Ling Huang, Ying Dai, Mengxia Li, Kunxin Liu
Summary: In this study, Nb-doped lead-free 0.5BZT-0.5BCT films were prepared and the effects of Nb content on the properties of the films were investigated. The results showed that low Nb doping significantly improved the dielectric and ferroelectric properties of the films.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Kevin Nadaud, Caroline Borderon, Raphael Renoud, Micka Bah, Stephane Ginestar, Hartmut W. Gundel
Summary: In this study, lead zirconate thin films were prepared on alumina substrates using sol-gel method, and their dielectric, piezoelectric, and electrostrictive properties were investigated. The experimental results reveal that the material exhibits different characteristics under different electric fields, including electrostrictive effect, piezoelectric effect, and significant strain caused by the antiferroelectric to ferroelectric phase transition. Furthermore, it is found that the piezoelectric effect coexists with the electrostrictive effect at low electric fields.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Qi Liu, Ying Dai, Xinkun Liu, Xinmei Pei, Wen Chen
Summary: The study enhanced the electrocaloric effect at room temperature in thin films containing iron, confirming the presence of an orthorhombic phase in the Fe-doped films and showing the highest relative content of the orthorhombic phase at x = 0.0075. The BZT-0.32BCT-xFe thin film exhibited superior properties at x = 0.0075, with a giant electrocaloric effect.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Multidisciplinary Sciences
Fan Yang, Jun Li, Yin Long, Ziyi Zhang, Linfeng Wang, Jiajie Sui, Yutao Dong, Yizhan Wang, Rachel Taylor, Dalong Ni, Weibo Cai, Ping Wang, Timothy Hacker, Xudong Wang
Summary: The research introduces a novel approach for the large-scale fabrication of piezoelectric biomaterial thin films with excellent piezoelectric properties and mechanical flexibility. The glycine-PVA films, with their natural compatibility and degradability in physiological environments, have the potential to advance the development of transient implantable electromechanical devices.
Article
Materials Science, Ceramics
J. E. Leal-Perez, J. Flores-Valenzuela, J. L. Almaral-Sanchez, S. F. Olive-Mendez, M. P. Cruz, O. Auciello, A. Hurtado-Macias
Summary: Ferroelectric (piezoelectric) lead-free KNNS thin films were grown on substrates using radio frequency sputtering. The d33 piezoelectric coefficient was measured and found to be higher than other lead-free materials. The films also exhibited high yield point, elastic modulus, and hardness.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Zhao-Cai Wang, Lei Chen, Shuang-Shuang Li, Jing-Shi Ying, F. Tang, Guan-Yin Gao, Y. Fang, Weiyao Zhao, David Cortie, Xiaolin Wang, Ren-Kui Zheng
Summary: Linear magnetoresistance (LMR) is observed in half-metallic perovskite Sr2CrMoO6 thin films, with a maximum MR value exceeding +1600%, possibly due to high carrier density and ultrahigh mobility. This unusual behavior in ferrimagnetic double perovskite materials may broaden the applications of perovskites and stimulate research on metallic oxide ferri-/ferro-magnetic materials.
NPJ QUANTUM MATERIALS
(2021)
Article
Physics, Applied
S. V. Mironov, A. I. Buzdin
Summary: It has been observed that a ferromagnetic slab sandwiched between two superconducting films can experience a strong demagnetization effect, where the transition of the superconducting film from normal to superconducting state switches the demagnetization factor significantly. This giant demagnetization effect remains robust even with decreasing superconducting film thickness and may help explain the anomalously large ferromagnetic resonance frequency shift observed in recent experiments.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Hoang M. Nguyen, Ariane V. Mader, Swarnalok De, Jaana Vapaavuori
Summary: The effect of dip-coating parameters on the morphology evolution of BCP thin films was studied, obtaining a hexagonally packed BCP pattern with long-range order without the need for post-annealing processes. This study extends the understanding of the parameters affecting the formed surface patterns and their interplay to more materials.
NANOSCALE ADVANCES
(2021)
Article
Materials Science, Multidisciplinary
Rui Pinho, Rui Vilarinho, J. Agostinho Moreira, Fatima Zorro, Paulo Ferreira, Maxim Ivanov, Alexander Tkach, M. Elisabete Costa, Paula M. Vilarinho
Summary: The impact of stress on the performance of lead-free potassium sodium niobate (KNN) thin films was investigated. It was found that films with compressive residual stress showed the lowest dielectric losses, highest electric permittivity, and maximum electric polarization. On the other hand, films with tensile residual stress exhibited the smallest polarization and almost negligible out-of-plane piezoresponse. These findings are important for understanding lead-free ferroelectric/piezoelectric behavior and its potential applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Ceramics
Mengdi Cheng, Mo Zhao, Shiyi Zhang, Yangxi Yan, Zhimin Li, Pangpang Wang, Ri-Ichi Murakami, Dongyan Zhang
Summary: This study reports the improvement in electrical properties of Pb(Ni1/3Nb2/3)O3-Pb(In1/2Nb1/2)O3-PbTiO3 relaxor ferroelectrics by modulating the polymorphism of nano-scale domain, resulting in high piezoelectric coefficients d33 and d33* of 948 pC/N and 1108 pm/V, respectively. The high piezoelectric response is explained by the significant changes in the morphology of ferroelectric domains during the transition from tetragonal to rhombohedral phase, leading to the appearance of nano-scale domains as an extrinsic contribution to piezoelectricity. In addition, the nanoscale domains promote polarization rotation, thereby improving the piezoelectric response. The improved thermal stability of the piezoelectric performance is also demonstrated. This work provides a good example of enhancing ceramics' piezoelectric response by modulating the polymorphism of nanoscale domains.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)