Article
Chemistry, Multidisciplinary
Jing Zhou, Xinyu Shu, Weinan Lin, Ding Fu Shao, Shaohai Chen, Liang Liu, Ping Yang, Evgeny Y. Tsymbal, Jingsheng Chen
Summary: The study systematically investigated the SOT generated by three different crystal structures of SrRuO3, revealing a correlation between the intrinsic SOT efficiency of SrRuO3 and epitaxial strain and octahedral rotation. This work offers new possibilities for tuning SOT and integrating the properties of perovskite oxides with spintronic functionalities.
ADVANCED MATERIALS
(2021)
Article
Multidisciplinary Sciences
Di Tian, Zhiwei Liu, Shengchun Shen, Zhuolu Li, Yu Zhou, Hongquan Liu, Hanghui Chen, Pu Yu
Summary: Berry curvature is crucial in exotic electronic states of quantum materials, and can be finely tuned by external stimuli. The study demonstrates the effective control of anomalous Hall resistivity in SrRuO3 thin films through epitaxial strain, providing insights into manipulating electronic states in quantum materials.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Materials Science, Ceramics
Zhongyuan Jiang, Jian Zhang, Dongsheng Song, Mo Zhu, Wenyi Liu, Qingmei Wu, Liangbing Ge, Zhaoliang Liao, Yuanjun Yang, Haoliang Huang, Jianlin Wang, Zhengping Fu, Yalin Lu
Summary: In this study, the stabilization of SrRuO3 in two metastable phases through interface coupling was achieved, enabling the tunability of magnetic anisotropy in perovskite oxides and revealing the large spin-lattice correlation. The results demonstrate the feasibility of tailoring the structural symmetry and functionality of perovskite oxides through interface coupling.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Xiang Ding, Baishun Yang, Huaqian Leng, Jae Hyuch Jang, Junrui Zhao, Chao Zhang, Sa Zhang, Guixin Cao, Ji Zhang, Rohan Mishra, Jiabao Yi, Dongchen Qi, Zheng Gai, Xiaotao Zu, Sean Li, Bing Huang, Albina Borisevich, Liang Qiao
Summary: The study investigates the impact of crystal symmetry mismatch on heterostructures and demonstrates that magnetic properties can be artificially controlled by manipulating the thickness of the SrTiO3 layer. It suggests that crystal symmetry mismatch can also be designed and engineered as an effective strategy to generate functional properties of perovskite oxides.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Hongguang Wang, Gennadii Laskin, Weiwei He, Hans Boschker, Min Yi, Jochen Mannhart, Peter A. van Aken
Summary: This article investigates the magnetic properties and RuO6 octahedral distortion in SrRuO3 nanodots with a size of 30 nm. The existence of oxygen ions and other elements in the nanodots is directly observed through electron microscopy and spectroscopy. It is found that the magnetic anisotropy and octahedral distortion are both size-dependent but remain constant in the first 3-unit-cell interfacial monolayers regardless of the nanodots' size. First principle calculations reveal a unique structural mechanism behind the size-dependent magnetic anisotropy.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Ceramics
Jing Wang, Fengguang Liu, Chunlan Ma, Caixia Wang, Azizur Rahman, Yan Zhu, Jiyu Fan
Summary: A series of SrRuO3 (SRO) single crystalline thin films were grown on a flexible substrate using pulsed laser deposition technology with a BaTiO3 (BTO) buffer layer. The magnetic properties of the SRO films, including Curie temperature Tc, saturation magnetization Ms, and coercivity Hc, were strongly influenced by the film thickness and the bending state. The control of mechanical bending and variation of film thickness have significant effects on the magnetic properties of the SRO films and their potential application in flexible devices.
CERAMICS INTERNATIONAL
(2023)
Article
Multidisciplinary Sciences
Uddipta Kar, Akhilesh Kr Singh, Song Yang, Chun-Yen Lin, Bipul Das, Chia-Hung Hsu, Wei-Li Lee
Summary: The growth condition of initial SrO layer on TiO2-terminated SrTiO3 (STO) substrate is crucial for achieving high crystallinity and low residual resistivity in SrRuO3 (SRO) thin films. Different thicknesses of SRO films exhibit excellent crystallinity with metallic and ferromagnetic properties well preserved, while the residual resistivity ratio decreases with decreasing film thickness.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Multidisciplinary
Qing Wang, Zhengguo Liang, Lingfei Wang, Jingdi Lu
Summary: Understanding the magnetotransport properties of SrRuO3 thin films and heterostructures is crucial for both fundamental research and practical applications. This study investigates the correlation between magnetoresistance and structure symmetry using SrRuO3/SrTiO3(001) epitaxial films. The results suggest that the relationship between structural symmetry and magnetoresistance is mediated by the modulations in magnetic anisotropy. These findings provide insights into harnessing the magnetotransport properties of SrRuO3 films and utilizing them in oxide-based spintronic devices.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Ji Qi, Yuan Zhang, Huan Liu, Hang Xu, Chen Wang, Linglong Hu, Ming Feng, Weiming Lu
Summary: In this study, the effects of strain on the oxygen evolution reaction (OER) performance were investigated using different types of strain. It was found that the strain exhibited different trends in rigid and flexible materials, which can be explained by the difference in oxygen activation energy in lattice fields.
Article
Chemistry, Multidisciplinary
Shan Lin, Qinghua Zhang, Xiahan Sang, Jiali Zhao, Sheng Cheng, Amanda Huon, Qiao Jin, Shuang Chen, Shengru Chen, Wenjun Cui, Haizhong Guo, Meng He, Chen Ge, Can Wang, Jiaou Wang, Michael R. Fitzsimmons, Lin Gu, Tao Zhu, Kuijuan Jin, Er-Jia Guo
Summary: Previous studies have shown that manipulation of octahedral distortion at atomic level is an effective means to tune the ground states of functional oxides. This study proposes a new route to tune ferromagnetism in ultrathin SrRuO3 layers by oxygen coordination of adjacent SrCuO2 layers, altering octahedral distortion and spin state of Ru.
Article
Chemistry, Physical
Oliver Paull, Changsong Xu, Xuan Cheng, Yangyang Zhang, Bin Xu, Kyle P. Kelley, Alex de Marco, Rama K. Vasudevan, Laurent Bellaiche, Valanoor Nagarajan, Daniel Sando
Summary: Epitaxial strain and orientation engineering have been combined to create a low-symmetry phase of BiFeO3 with enhanced piezoelectric response, which undergoes a transition to the tetragonal-like polymorph under electric field. This results in an enhanced piezoelectric response throughout the film and associated field-induced reversible strains. This approach offers a way to improve the functionalities of thin-film piezoelectrics, with potential applications in other functional oxides.
Article
Chemistry, Multidisciplinary
Chang Jae Roh, Eun Kyo Ko, Yunyeong Chang, Soon Hee Park, Junsik Mun, Miyoung Kim, Tae Won Noh
Summary: Cracks have a significant impact on the physical properties of materials, including structural stability, electrical conductivity, and thermal conductivity. This study comprehensively investigates the effect of nanocracks on the physical properties of metallic SrRuO3 (SRO) thin films. It is found that the presence of nanocracks leads to inhomogeneous relaxation of strain in the SRO layer, resulting in its dc conductivity approaching zero. Additionally, an enhancement of the local optical conductivity near the nanocrack region is observed, which is attributed to the strain relaxation near the nanocracks. This research suggests that nanocracks can be utilized as promising platforms for investigating local emergent phenomena related to strain effects.
Article
Chemistry, Multidisciplinary
Anusha Kamath Manjeshwar, Sreejith Nair, Anil Kumar Rajapitamahuni, Richard D. James, Bharat Jalan
Summary: Controlling defect densities in SrRuO3 films is crucial for investigating the relationship between its structural, electrical, and magnetic properties. By combining film growth, electrical transport, and magnetometry, we demonstrate the adsorption-controlled growth of phase-pure, epitaxial, and stoichiometric SrRuO3 films on SrTiO3 (001) substrates. It is found that the anomalous Hall curves arise from two distinct magnetic domains and a high residual resistivity ratio is achieved in a coherently strained SrRuO3 film.
Article
Chemistry, Physical
Pao-Wen Shao, Meng-Chin Lin, Qian Zhuang, Jiawei Huang, Shi Liu, Hsiao-Wen Chen, Hsiang-Lin Liu, Yu-Jung Lu, Yung-Jung Hsu, Jyh-Ming Wu, Yi-Chun Chen, Ying-Hao Chu
Summary: This study reveals the existence of localized flexoelectric effect in ferroelastic twin texture of ferroelastic materials, and provides evidence that the flexoelectric effect confined at domain wall area facilitates photocarrier transport, which is further supported by dye-degradation and generation of reactive radicals.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
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
Hyeon Han, Hua Zhou, Charles Guillemard, Manuel Valvidares, Arpit Sharma, Yan Li, Ankit K. Sharma, Ilya Kostanovskiy, Arthur Ernst, Stuart S. P. Parkin
Summary: This study uses the hydrogen spillover method to tailor the properties of SrRuO3 thin films by incorporating hydrogen. It is found that the magnetization and Curie temperature of the films are significantly reduced, and the structure evolves from an orthorhombic to a tetragonal phase with increasing hydrogen content. In situ crystal truncation rod measurements show that the structural phase transition is related to tilting of the RuO6 octahedral units. Density functional theory analysis demonstrates that the significant changes in magnetization result from shifts in the Fermi level. These findings provide new insights into the physical properties of SrRuO3 through the modulation of its lattice symmetry and emergent physical phenomena using the hydrogen spillover technique.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Weiwei Yang, Felipe Polo-Garzon, Hua Zhou, Zhennan Huang, Miaofang Chi, Harry Meyer III, Xinbin Yu, Yuanyuan Li, Zili Wu
Summary: In this study, different Pd single atom catalysts on ceria support were obtained by thermal pretreatment, leading to enhanced activity for methane oxidation. The enhanced activity is related to the oxygen-deficient local structure and elongated interacting distance with ceria.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Xiaohan Wu, Da Lan, Chengjun Sun, Hua Zhou, Xiaojiang Yu, Ping Yang, Xiaoqian Yu, Chao Liu, Pingfan Chen, Jun Ding, Jingsheng Chen, Gan Moog Chow
Summary: This study reports a two-step magnetization reversal in PZT/LSMO superlattices, which is attributed to the combined effects of strain, ferroelectric polarization, and exchange. The results demonstrate enhanced magnetoelectric coupling in PZT/LSMO superlattices, which holds significant implications for the application of multiferroic-based devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Minghao Xie, Sishuang Tang, Zhao Li, Maoyu Wang, Zhaoyu Jin, Panpan Li, Xun Zhan, Hua Zhou, Guihua Yu
Summary: Harvesting recyclable ammonia (NH3) from the electrocatalytic reduction of nitrate (NO3RR) is a sustainable strategy to close the nitrogen cycle in an energy-efficient and environmentally friendly manner. In this study, a new intermetallic single-atom alloy (ISAA) In-Pd bimetallene is reported to boost neutral NO3RR with high efficiency and stability. By integrating the NO3RR catalyst into a Zn-NO3(-) flow battery, high power density and NH3 production efficiency are achieved.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Sreejith Nair, Zhifei Yang, Dooyong Lee, Silu Guo, Jerzy T. Sadowski, Spencer Johnson, Abdul Saboor, Yan Li, Hua Zhou, Ryan B. Comes, Wencan Jin, K. Andre Mkhoyan, Anderson Janotti, Bharat Jalan
Summary: A study shows that epitaxial strain can be used to enhance the metal oxidation chemistry and thin-film growth of metal oxide thin films. Platinum group metal oxides are promising materials for future electronics and spintronics. However, their synthesis as thin films is challenging due to low vapor pressures and oxidation potentials. Using Ir as an example, the researchers demonstrate how epitaxial strain can control its oxidation chemistry, enabling phase-pure Ir or IrO2 films. The study also reveals the generality of this principle by showing the effect of epitaxial strain on Ru oxidation.
NATURE NANOTECHNOLOGY
(2023)
Article
Physics, Multidisciplinary
Shuai Yuan, Zuhuang Chen, Sergei Prokhorenko, Yousra Nahas, Laurent Bellaiche, Chenhan Liu, Bin Xu, Lang Chen, Sujit Das, Lane W. Martin
Summary: Using phase-field simulations, the evolution of polar topology and the emergence of a hexagonal close-packed skyrmion lattice in ultrathin ferroelectric PbTiO3 films is explored. The lattice can be stabilized under an external electric field and the lattice constants increase with film thickness. These studies pave the way for the development of novel ordered condensed matter phases in nanoscale ferroelectrics.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Eduardo Lupi, Robert B. Wexler, Derek Meyers, Anton Zahradnik, Yizhe Jiang, Sandhya Susarla, Ramamoorthy Ramesh, Lane W. Martin, Andrew M. Rappe
Summary: Complex-oxide superlattices with precise unit-cell structures provide a pathway to various emergent phenomena. In this study, relaxor-like behavior is observed in superlattices of ferroelectric and dielectric materials. The behavior is influenced by the periodicity and shape of the superlattice.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Qingteng Zhang, Gang Wan, Vitalii Starchenko, Guoxiang Hu, Eric M. Dufresne, Hua Zhou, Hyoungjeen Jeen, Irene Calvo Almazan, Yongqi Dong, Huajun Liu, Alec R. Sandy, George E. Sterbinsky, Ho Nyung Lee, P. Ganesh, Dillon D. Fong
Summary: The intermittent behavior of point defects in oxide heterostructures has been discovered using X-ray photon correlation spectroscopy. The local fluctuations between ordered phases in strained SrCoOx with different stability of oxygen vacancies are found to be modulated by the interaction energy between oxygen ions/vacancies and epitaxial strain. This study reveals the influence of defect dynamics on material functionality and opens new avenues for engineering the dynamical response of functional materials in neuromorphic and electrochemical applications.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Qiang Gao, Zihao Yan, Weijie Zhang, Hemanth Somarajan Pillai, Bingqing Yao, Wenjie Zang, Yuanqi Liu, Xue Han, Bokki Min, Hua Zhou, Lu Ma, Bukuru Anaclet, Sen Zhang, Hongliang Xin, Qian He, Huiyuan Zhu
Summary: This study reports the synthesis of Pd-Cu nanocubes as a highly active and selective catalyst for the hydrogenation of acetylene to ethylene. The core/shell structure with high surface density of active Pd sites isolated by Cu in the B2 intermetallic matrix enhances the catalytic performance compared to pristine Pd and Cu catalysts.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Physics, Multidisciplinary
Zishen Tian, Michael Xu, Jieun Kim, Hao Pan, Djamila Lou, Xiaoxi Huang, James M. Lebeau, Lane W. Martin
Summary: Superlattices of [BaTiO3]m/[BaZrO3]n (m, n = 4-12) are used to demonstrate the fabrication and control of an artificial relaxor. Experimental results show the successful production of high-quality heterostructures. The study reveals a transition in the dielectric properties of the materials as the BaTiO3 layer thickness decreases.
PHYSICAL REVIEW LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Jose P. B. Silva, Ruben Alcala, Uygar E. Avci, Nick Barrett, Laura Begon-Lours, Mattias Borg, Seungyong Byun, Sou-Chi Chang, Sang-Wook Cheong, Duk-Hyun Choe, Jean Coignus, Veeresh Deshpande, Athanasios Dimoulas, Catherine Dubourdieu, Ignasi Fina, Hiroshi Funakubo, Laurent Grenouillet, Alexei Gruverman, Jinseong Heo, Michael Hoffmann, H. Alex Hsain, Fei-Ting Huang, Cheol Seong Hwang, Jorge Iniguez, Jacob L. Jones, Ilya V. Karpov, Alfred Kersch, Taegyu Kwon, Suzanne Lancaster, Maximilian Lederer, Younghwan Lee, Patrick D. Lomenzo, Lane W. Martin, Simon Martin, Shinji Migita, Thomas Mikolajick, Beatriz Noheda, Min Hyuk Park, Karin M. Rabe, Sayeef Salahuddin, Florencio Sanchez, Konrad Seidel, Takao Shimizu, Takahisa Shiraishi, Stefan Slesazeck, Akira Toriumi, Hiroshi Uchida, Bertrand Vilquin, Xianghan Xu, Kun Hee Ye, Uwe Schroeder
Summary: Ferroelectric hafnium and zirconium oxides have shown significant progress in ultralow-power electronic systems, but technical limitations still hinder their application. This article aims to provide a comprehensive overview of the current state, challenges, and prospects for the development of these materials, with the collaboration of experts from different fields.
Article
Energy & Fuels
Or Shafir, Andrew L. Bennett-Jackson, Alexandria R. Will-Cole, Atanu Samanta, Dongfang Chen, Adrian Podpirka, Aaron Burger, Liyan Wu, Eduardo Lupi Sosa, Lane W. Martin, Jonathan E. Spanier, Ilya Grinberg
Summary: By tuning fundamental ferroelectric properties, a high BPE photoresponse can be achieved in an ordinary thin-film configuration. The responsivity shows a nonmonotonic dependence on ferroelectric polarization, and at the optimal value, it increases by three orders of magnitude compared to the bulk BaTiO3.
Article
Materials Science, Multidisciplinary
Baichen Lin, Yanyi Zhang, Hongjian Zhang, Haofei Wu, Junda Shao, Jian Shao, Kai Liu, Shanquan Chen, Chao Zhou, Xianlong Cheng, Jingyu Lu, Kailong Hu, Yan Huang, Weiwei Zhao, Pan Liu, Jixin Zhu, Hua-Jun Qiu, Zuhuang Chen
Summary: Two-dimensional (2D) metals have attracted significant attention for their unique properties and potential applications. However, the fabrication of atomically thin 2D metals remains challenging. In this study, we demonstrate a general method to fabricate freestanding, high-quality 2D metals with large aspect ratios and controllable thickness using Pt as a model system.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Grayson Johnson, Moon Young Yang, Chang Liu, Hua Zhou, Xiaobing Zuo, Diane A. Dickie, Sihan Wang, Wenpei Gao, Bukuru Anaclet, Frederic A. Perras, Fuyan Ma, Chenjie Zeng, Da Wang, Sara Bals, Sheng Dai, Zhen Xu, Guoliang Liu, William A. Goddard III, Sen Zhang
Summary: A scalable and generalized approach to synthesizing superstructures assembled from atomically precise nanoclusters has been reported, with a detailed description of the self-assembly mechanism. The chemical tuning of surface ligands controls superstructure disassembly and reassembly, enabling the synthesis of multicomponent superstructures. This research is promising for the preparation of superstructures for use in electronics, plasmonics, magnetics, and catalysis.
Article
Chemistry, Multidisciplinary
Yijun Qiao, Qiming He, Hsin-Hsiang Huang, Dean Mastropietro, Zhang Jiang, Hua Zhou, Yuhong Liu, Matthew V. Tirrell, Wei Chen
Summary: In this study, the response of polymer brushes to shear flow is explored using in situ X-ray reflectivity. The research investigates how poly(styrene sulfonate) (PSS) brushes stretch and change in different environments, providing valuable insights into the behaviours and mechanisms that govern these responses.
