Article
Chemistry, Physical
Min Zhang, Chaoyong Deng
Summary: The evolution of dynamic hysteresis with electrical field amplitude and frequency in BTO single crystal films prepared by PLD was systematically investigated. A noticeable transition from low-frequency to high-frequency behavior was observed, with domain motion frequency dependence identified as the cause of the dynamic hysteresis loop scaling behavior.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Soumen Pradhan, Martando Rath, Adrian David, Deepak Kumar, Wilfrid Prellier, M. S. Ramachandra Rao
Summary: The study investigated the time evolution of nanoscale domain relaxation mechanism in epitaxial K0.5Na0.5NbO3 (KNN) thin films on La0.67Sr0.33MnO3/SrTiO3 (001) substrates. The findings show that thicker films exhibit larger surface potential and longer retention time, with domains retaining for over 2300 minutes in KNN thin films.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Meng-Jun Zhou, Bo Wang, Adriana Ladera, Laura Bogula, Han-Xing Liu, Long-Qing Chen, Ce-Wen Nan
Summary: In this study, the formation conditions, morphological features, and polarization configurations of two types of superdomain structures in K0.5Na0.5NbO3 thin films were investigated using phase-field simulations and compared with prior experiments. Several types of superdomain walls with different energies and finite thicknesses were identified, some of which were anomalously wide and electrically conductive.
Article
Chemistry, Multidisciplinary
Yuqing Zhou, Changqing Guo, Guohua Dong, Haixia Liu, Ziyao Zhou, Ben Niu, Di Wu, Tao Li, Houbing Huang, Ming Liu, Tai Min
Summary: In this study, zigzag wrinkle morphology was fabricated on inorganic thin films to modulate ferroelectric domains and create a superstructure with periodic surface charge distribution. This unique structure can be switched using strain gradient and provides a means to regulate cells and polar molecules in physiological and bioelectric applications.
Article
Materials Science, Ceramics
Tae Yeon Kim, Je Oh Choi, Gopinathan Anoop, Jaegyu Kim, Seong Min Park, Shibnath Samanta, Wooseon Choi, Young-Min Kim, Seungbum Hong, Ji Young Jo
Summary: In this study, ultrahigh energy density singlecomponent Sn-doped BaTiO3 (BTS) epitaxial thin film capacitors were successfully developed, achieving an ultrahigh energy density of 92.5 J/cm3 and energy efficiencies above 78%. These excellent results were attributed to the formation of multi-nanodomains accompanied by delayed polarization saturation, low remnant polarization, high breakdown strength, and high cycling stability. Engineering multi-nanodomains through chemical doping and epitaxial orientation is a facile approach to develop energy-efficient ultrahigh energy density capacitors.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Xu Jiang, Jie Sun, Xiaojie Chai, Yifan Chen, Wei Zhang, Jun Jiang, Anquan Jiang
Summary: The study found that the wall current varies with the angle between the applied electric field and the initial polarization, and that the oxygen vacancy concentration can be controlled through thermal annealing, affecting the magnitude of the domain wall current.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Yilin Wang, Linxing Zhang, Jiaou Wang, Qiang Li, Huanhua Wang, Lin Gu, Jun Chen, Jinxia Deng, Kun Lin, Ling Huang, Xianran Xing
Summary: A promoted chemical pressure route has been utilized to prepare high-performance BaTiO3 films, achieving the highest remanent polarization and high Curie temperature. The negative chemical pressure imposed during the process significantly enhances the bonding states and contributes to the improved polarization.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Physics, Applied
Donghoon Kim, Marta D. Rossell, Marco Campanini, Rolf Erni, Josep Puigmarti-Luis, Xiang-Zhong Chen, Salvador Pane
Summary: The magnetoelectric effect in ME composites originates from the coupling between ferroelectric and ferromagnetic components, with substrate clamping diminishing the effect. By using fabrication techniques to control substrate clamping, enhanced ME coupling was observed in micro-patterned bilayer thin films compared to the original films. Site-dependent ME coupling within the microstructure was also observed, with larger coupling near the edge of the microstructure attributed to non-uniform substrate clamping and strain gradients in the BTO layer.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Yu-Hong Lai, Jun-Ding Zheng, Si-Cheng Lu, Yin-Kuo Wang, Chun-Gang Duan, Pu Yu, Yun-Zhe Zheng, Rong Huang, Li Chang, Ming-Wen Chu, Ju-Hung Hsu, Ying-Hao Chu
Summary: In condensed matter physics, oxide materials exhibit diverse and intriguing physical properties, making the development of functional oxides an important field of study. This research focuses on stabilizing PbSnO3 thin films with different orientations using a heteroepitaxial approach supported by theoretical calculations. Through X-ray diffraction and transmission electron microscopy, the structural information of the thin films is revealed. The electrical characterizations confirm the anticipated antiferroelectric behavior, including double hysteresis and butterfly loops. The study also investigates the phase transition and determines the transition temperatures based on temperature-dependent structural and electrical characterizations. Furthermore, scanning transmission electron microscopy provides atomic resolution images, revealing the microscopic antiferroelectric order. This work represents a significant breakthrough in synthesizing epitaxial PbSnO3 thin films and comprehensively understanding their anisotropic antiferroelectric behavior.
Review
Physics, Applied
Abhijit Biswas, William Joshua Kennedy, Nicholas R. R. Glavin, Pulickel M. M. Ajayan
Summary: In recent decades, there has been a significant increase in research focused on growing high quality atomically smooth epitaxial thin films, demonstrating unprecedented quantum correlated phenomena and a great potential for oxitronics. However, the growth of defect-free and highly conducting perovskite oxide thin films still remains an active area of research due to various factors influencing film quality and electronic properties. This review summarizes the progress in growing atomically smooth epitaxial thin films of highly conducting ABO(3) perovskites with low resistivity and highlights the importance of optimizing growth parameters and film-substrate interaction for achieving high-quality epitaxy. Highly conducting epitaxial oxide thin films are essential for bridging the gap between oxides and their practical integration in electronics.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Physics, Applied
Pauline Dufour, Thomas Maroutian, Maxime Vallet, Kinnary Patel, Andre Chanthbouala, Charlotte Jacquemont, Lluis Yedra, Vincent Humbert, Florian Godel, Bin Xu, Sergey Prosandeev, Laurent Bellaiche, Mojca Otonicar, Stephane Fusil, Brahim Dkhil, Vincent Garcia
Summary: The antiferroelectric state of 45-nm-thick epitaxial thin films of PbZrO3 is observed through the characteristic structural periodicity of dipoles and the double hysteresis of the polarization-electric field response. A transition to a ferroelectric-like state is found to occur in a large temperature window. Atomistic simulations confirm the presence and origin of the ferroelectric state in the films. Electric-field-induced ferroelectric transitions are detected via piezoresponse force microscopy.
APPLIED PHYSICS REVIEWS
(2023)
Article
Physics, Applied
Peijie Jiao, Jiayi Li, Zhongnan Xi, Xiaoyu Zhang, Jian Wang, Yurong Yang, Yu Deng, Di Wu
Summary: Deposited Hf0.5Zr0.5O2 (HZO) thin films on (110)-oriented SrTiO3 (STO) substrates buffered with epitaxial La0.7Sr0.3MnO3 (LSMO) by pulsed laser deposition exhibit enhanced ferroelectric properties without the need for a wake-up process, providing insights into the effects of orientation, strain, and interface microstructures on metastable polar phases and ferroelectric properties.
APPLIED PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Xiaolong Zhu, Jianqiang Wu, Wei Li, Cai Liu, Jingquan Zhang, Songbai Hu
Summary: Epitaxial growth of ZnTe on Si can lead to stacking faults, but the quality can be improved by using ZnTe nucleation layer or ZnSe buffer layer. ZnTe films with only {111}-oriented domains exhibit a narrow FWHM and low dislocation density.
Article
Physics, Applied
J. W. Adkins, I. Fina, F. Sanchez, S. R. Bakaul, J. T. Abiade
Summary: In this study, the influence of controllable polarization reversal and built-in electric fields on pyroelectric and electrocaloric effects in a BaTiO3 thin film is examined using a modified indirect method. It is found that the magnitude of the sample's change in polarization with temperature is sensitive to the degree of polarization reversal. The pyroelectric response is small at low fractions of switched polarization and grows larger with higher fractions of reversal. This is attributed to the destabilizing effect of the internal built-in field on low fractions of switched polarization.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
Qishan Zhu, Rujun Tang, Shun Wang, Guoqing Liang, Han Wang, Haiyan Wang, Run Zhao, Hao Yang, Lu You, Xiaodong Su
Summary: In this study, BFSO/BTO bilayer epitaxial thin films were fabricated and showed significant improvements in magnetic susceptibility, multiferroic transition temperature, and EFCM compared to single layer films. The high room temperature magnetoelectric coupling coefficient and the repeatable low voltage EFCM at different temperatures make these bilayer films promising for micro-integrated microwave devices.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Applied
J. A. Peters, Z. Liu, J. Im, S. Nguyen, M. Sebastian, A. J. Freeman, M. G. Kanatzidis, B. W. Wessels
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2015)
Article
Materials Science, Multidisciplinary
M. Sebastian, J. A. Peters, C. C. Stoumpos, J. Im, S. S. Kostina, Z. Liu, M. G. Kanatzidis, A. J. Freeman, B. W. Wessels
Article
Chemistry, Multidisciplinary
Peng L. Wang, Svetlana S. Kostina, Fang Meng, Oleg Y. Kontsevoi, Zhifu Liu, Pice Chen, John A. Peters, Micah Hanson, Yihui He, Duck Young Chung, Arthur J. Freeman, Bruce W. Wessels, Mercouri G. Kanatzidis
CRYSTAL GROWTH & DESIGN
(2016)
Article
Chemistry, Multidisciplinary
Hao Li, Fang Meng, Christos D. Malliakas, Zhifu Liu, Duck Young Chung, Bruce Wessels, Mercouri G. Kanatzidis
CRYSTAL GROWTH & DESIGN
(2016)
Article
Optics
Peter Girouard, Zhifu Liu, Pice Chen, Young Kyu Jeong, Yongming Tu, Seng-Tiong Ho, Bruce W. Wessels
Article
Engineering, Electrical & Electronic
S. S. Kostina, J. A. Peters, W. Lin, P. Chen, Z. Liu, P. L. Wang, M. G. Kanatzidis, B. W. Wessels
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
(2016)
Article
Engineering, Electrical & Electronic
Peter Girouard, Pice Chen, Young Kyu Jeong, Zhifu Liu, Seng-Tiong Ho, Bruce W. Wessels
IEEE JOURNAL OF QUANTUM ELECTRONICS
(2017)
Article
Engineering, Electrical & Electronic
Lujin Min, Zhifu Liu, J. A. Peters, Yihui He, Mercouri G. Kanatzidis, Jingchuan Zhu, Bruce W. Wessels
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
(2019)
Article
Chemistry, Multidisciplinary
Wenwen Lin, Jiangang He, Kyle M. McCall, Constantinos C. Stoumpos, Zhifu Liu, Ido Hadar, Sanjib Das, Hsien-Hau Wang, Bi-Xia Wang, Duck Young Chung, Bruce W. Wessels, Mercouri C. Kanatzidis
Summary: The inorganic halide perovskitoid compound TlPbI3 demonstrates excellent properties such as high density, wide bandgap, low melting point, and high electrical resistivity, making it ideal for high-quality crystal growth and detection of Ag K-alpha X-rays and 122 keV gamma-rays from Co-57 radiation source.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
J. A. Peters, Z. Liu, O. Bulgin, Y. He, V. V. Klepov, M. C. De Siena, M. G. Kanatzidis, B. W. Wessels
Summary: Excitons in Bridgman grown halide perovskite CsPbBr3 single crystals were studied using photoluminescence (PL) spectroscopy to determine their electronic states, revealing strong temperature-dependent photoluminescence intensity and multiple strong bands at the band edge attributed to free or trapped excitons with strong electron-phonon coupling. The average phonon energy and Huang-Rhys parameter indicated a significant electron-phonon interaction, leading to the formation of small polarons and trapped excitons. Transient photoluminescence responses indicated a multiphonon recombination process, with average lifetimes of 17 ns for free excitons and 38 ns for trapped excitons. Native defects and phase transitions were identified as potential causes for the observed edge states, suggesting that eliminating trapping sites could improve charge transport and detector properties.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Optics
John A. Peters, Zhifu Liu, Michael C. De Sien, Mercouri G. Kanatzidis, Bruce W. Wessels
Summary: In this study, we analyzed the low-temperature photoluminescence and band edge excitonic emission in bulk halide perovskite CsPbCl3 single crystals. Our findings include the observation of multiple sharp features and excitonic states, as well as the investigation of recombination mechanisms of photogenerated charge carriers. These results provide important insights into the optical and electronic properties of halide perovskites.
JOURNAL OF LUMINESCENCE
(2022)
Article
Physics, Applied
John A. Peters, Zhifu Liu, Michael C. De Siena, Mercouri G. Kanatzidis, Bruce W. Wessels
Summary: Thermally stimulated current (TSC) spectroscopy was used to characterize electronic trap states in CsPbCl3 perovskite bulk single crystals. Multiple traps were found in the temperature range from 80 K to above room temperature, with V-Cs and V-Cl vacancies and Pb-i interstitials identified as possible defects. The concentration of defects in crystals grown from an improved growth procedure was one to four orders of magnitude lower than that of crystals from an earlier growth process. Reducing and eliminating trap states can lead to perovskite crystals with improved properties.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Physics, Applied
Zhifu Liu, John A. Peters, Lei Pan, Vladislav Klepov, Michael De Siena, Alessandro Benadia, Duck Young Chung, Mercouri G. Kanatzidis, Bruce W. Wessels
Summary: Recently, the focus has been on developing x-ray and gamma ray detectors with large volume and high energy resolution that can operate at room temperature. To achieve this, it is necessary to increase the carrier mobility-lifetime product and minimize the concentration of electronic trap states. Thorough measurements and comparisons were conducted on CsPbBr3 halide perovskite single crystals to understand their origins and trap parameters. The results showed that crystals with trap concentrations below 1 x 10(14) cm(-3) exhibited appreciable detector performance.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
J. A. Peters, Zhifu Liu, Ruihan Yu, K. M. McCal, Yihui He, M. G. Kanatzidis, B. W. Wessels
Proceedings Paper
Engineering, Electrical & Electronic
Peter Girouard, Pice Chen, Yongming Tu, Young Kyu Jeong, Zhifu Liu, Seng-Tiong Ho, Bruce W. Wessels
2015 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2015)
