Article
Multidisciplinary Sciences
Jijie Huang, Weijin Chen
Summary: This article summarizes the methods for fabricating high-quality flexible oxide thin films with novel functionalities and applications, and introduces various functionalities and applications of these films.
Article
Chemistry, Inorganic & Nuclear
Li-Mei Chang, Zhi-Zhou Ma, Jiandong Huang, Zhi-Gang Gu
Summary: This study reports a series of single and multiple (bi-varietal and tri-varietal) pillar-layered metal-organic framework (MOF) thin films (surface-coordinated MOF thin films, SURMOFs) with high lattice mismatch. The SURMOFs were successfully grown on the substrate surfaces with preferred [001]-orientation using a liquid-phase epitaxial (LPE) layer by layer pump method. The results show that the representative bi-varietal SURMOF with large lattice mismatch has different adsorption behavior from single SURMOFs, providing a new strategy to achieve tuning of the adsorption kinetics performance in sensing applications.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Mythili Surendran, Huandong Chen, Boyang Zhao, Arashdeep S. Thind, Shantanu Singh, Thomas Orvis, Huan Zhao, Jae-Kyung Han, Han Htoon, Megumi Kawasaki, Rohan Mishra, Jayakanth Ravichandran
Summary: This study reports the direct epitaxial thin film growth of chalcogenide perovskite BaZrS3 by pulsed laser deposition, showing smooth film surfaces and strong potential for photovoltaic applications. The films exhibit clear epitaxial relationship with the substrate, and photodetector devices demonstrate fast and efficient photo response, making BaZrS3 a promising candidate for ultrathin front absorbers in tandem solar cells.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Physical
Elzbieta Gradauskaite, Natascha Gray, Marco Campanini, Marta D. Rossell, Morgan Trassin
Summary: Efforts to integrate ferroelectric materials into nonvolatile, low energy consuming memories have focused on perovskite oxide materials. However, finite-size effects hinder their down-scaling for nanodevices, and alternative materials with robust polar properties are needed. Layered ferroelectrics of the Aurivillius phase have emerged as promising candidates with robust polarization at subunit-cell thicknesses, but controlled growth in epitaxial thin film form remains challenging. Here, the stabilization of coalescent layer-by-layer growth mode for Aurivillius family homologues is demonstrated, providing a systematic framework for the integration of high-quality epitaxial layered ferroelectrics into oxide electronics.
CHEMISTRY OF MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Marc Stevens, Hanna Pazniak, Alexander Jemiola, Merve Felek, Michael Farle, Ulf Wiedwald
Summary: Pulsed Laser Deposition was used to grow phase pure and epitaxial Cr2AlC MAX phase thin films on MgO(111) and Al2O3(0001). The results demonstrate the potential of this method for the growth of epitaxial MAX phase thin films, with the film thickness affecting the material properties significantly.
MATERIALS RESEARCH LETTERS
(2021)
Article
Physics, Applied
Sijun Luo, Lukas Trefflich, Susanne Selle, Ron Hildebrandt, Evgeny Krueger, Stefan Lange, Jingjing Yu, Chris Sturm, Michael Lorenz, Holger Von Wenckstern, Christian Hagendorf, Thomas Hoeche, Marius Grundmann
Summary: This paper reports the heteroepitaxial growth of (00.1)-oriented Zn2GeO4 thin films on c-plane sapphire substrates using pulsed laser deposition. The thin films exhibit [11.0] Zn2GeO4// [11.0] Al2O3 and [1(1) over bar.0] Zn2GeO4//[1(1) over bar.0] Al2O3 in-plane orientation relationships. The measured properties include a rocking curve full width at half maximum of 0.35 degrees, a direct bandgap of 4.9 +/- 0.1 eV, and a defect-related photoluminescence emission centered at 2.62 eV with a FWHM of 0.55 eV. This study enhances our understanding of the physical properties and potential device application of Zn2GeO4 thin films.
APPLIED PHYSICS LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Rohit Attri, Debendra Prasad Panda, Jay Ghatak, C. N. R. Rao
Summary: In this study, NiO epitaxial thin films were successfully prepared at low temperatures using plasma-enhanced atomic layer deposition (PEALD) technique. The films exhibited excellent crystallinity and ultra-smooth surface without the need for post-annealing. Additionally, the magnetic properties of (111) oriented NiO films prepared using PEALD were explored for the first time, revealing their antiferromagnetic nature.
Article
Chemistry, Multidisciplinary
James P. Barnard, Robynne L. Paldi, Matias Kalaswad, Zihao He, Hongyi Dou, Yizhi Zhang, Jianan Shen, Dongqi Zheng, Neil R. Dilley, Raktim Sarma, Aleem M. Siddiqui, Peide D. Ye, Haiyan Wang
Summary: Integration of functional complex oxides with nanoelectronic devices has become a topic of great interest. However, integrating them with Si-based devices is challenging due to material and processing compatibility issues. In this study, a buffer stack of TiN/SrTiO3/CeO2 was used to successfully integrate the BFMO layered supercell phase on Si with high epitaxial quality. The microstructure, magnetic, ferroelectric, and optical properties of BFMO films on Si were characterized and compared with those on SrTiO3 single-crystal substrates, showing comparable epitaxial quality and physical properties.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Physics, Applied
Amanda Huon, Sangmoon Yoon, Michael R. Fitzsimmons, Timothy R. Charlton, Jong Mok Ok, Clarina dela Cruz, Ho Nyung Lee
Summary: Epitaxial SrRu1-xSnxO3 thin films were deposited on SrTiO3 substrates using pulsed laser deposition, showing good crystalline quality and smooth surface. Sn doping can tune chemical pressure and magnetism, leading to an increase in resistivity and decrease in ferromagnetism of the films.
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.
Article
Materials Science, Coatings & Films
Sofia K. Pinzon, James A. Valdez, Vancho Kocevski, J. K. Baldwin, Blas P. Uberuaga, Cortney R. Kreller, Benjamin K. Derby
Summary: The study analyzes the effect of different substrate temperatures and altering the oxide cation on the structural and morphological properties of lanthanide sesquioxide thin films. It was found that the structure and morphology of the films can be controlled by manipulating deposition parameters.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
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
Materials Science, Multidisciplinary
Bruno Magalhaes, Stefan Engelhardt, Christian Molin, Sylvia E. Gebhardt, Kornelius Nielsch, Ruben Huhne
Summary: While bulk materials research has identified Na0.5Bi0.5TiO3 (NBT)-based compounds as potential candidates for lead-free electrocaloric cooling processes, this study focuses on investigating the feasibility of epitaxial NBT-based thin films for a more detailed analysis of the relationship between composition, microstructure, and functional properties. The thin films exhibited undisturbed epitaxial growth on lattice-matching substrates with columnar microstructure, but showed increased roughness and grain size with thicker films. Dielectric measurements showed a shift in phase transition temperature, reduced permittivity, and increased losses compared to bulk samples.
Article
Materials Science, Multidisciplinary
Philipp Storm, Susanne Selle, Holger von Wenckstern, Marius Grundmann, Michael Lorenz
Summary: Transparent, p-type semiconductor copper iodide (CuI) thin films were grown via pulsed laser deposition on SrF2(111) using water soluble sacrificial layers of sodium bromide (NaBr). The resulting CuI thin films are single crystalline with reduced surface roughness compared to epitaxial CuI grown with rotational domains on other templates. The CuI thin films were subsequently transferred onto glass using epoxy/glue and dissolution of NaBr in a water-vapor atmosphere.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Hagen Bryja, Juergen W. Gerlach, Andrea Prager, Martin Ehrhardt, Bernd Rauschenbach, Andriy Lotnyk
Summary: This study explores memristive switching in vertical device structures based on layered Sb2Te3, with Ag as electrode metal achieving analog programmability, stable multilevel retention, and endurance performance. The research suggests potential applications for thin layered Sb2Te3 in neuromorphic computing and a scalable integration method into the existing Si platform.
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.