Article
Materials Science, Multidisciplinary
M. Zarifi, P. Kameli, A. Ghotbi Varzaneh, E. Hosseini, M. Norouzi-Inallu, M. Abbasi Eskandari, H. Ahmadvand
Summary: The effects of anisotropic strain on La0.3Pr0.4Ca0.3 MnO3 films were investigated. The anisotropic resistance was observed due to different strengths of anisotropic strain controlled by film thicknesses. The anisotropic resistivity originated from different percolation paths in the films and revealed electronic phase separation induced by anisotropic strain. Additionally, the resistivity of the films was found to be significantly reduced by applying electric currents.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
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
Physics, Applied
Zhongnan Xi, Yao Li, Pengxiang Hou, Peijie Jiao, Honghe Ding, Fengchun Hu, Jun Hu, Yu Deng, Yurong Yang, Di Wu
Summary: In this study, the coercive field of NiCo2O4 films was systematically controlled by varying the deposition temperature while maintaining the perpendicular magnetic anisotropy. The changes in cation valence and coordination in the films were investigated using X-ray photoelectron emission and X-ray absorption spectroscopy, allowing for a better understanding of their magnetic and transport characteristics.
PHYSICAL REVIEW APPLIED
(2022)
Article
Chemistry, Multidisciplinary
Atharv Jog, Pengyuan Zheng, Tianji Zhou, Daniel Gall
Summary: In this study, Mo(001) and Mo(011) layers were sputter-deposited onto MgO(001) and alpha-Al2O3(11 (2) over bar0) substrates with thicknesses ranging from 4 to 400 nm. The resistivity of these layers was measured in situ and ex situ at room temperature and 77 K to investigate the resistivity size effect. Both Mo(001) and Mo(011) layers showed an increase in resistivity as the thickness decreased, which was attributed to electron surface scattering. The measurements and simulations confirmed the anisotropy in resistivity size effect, with the Mo(011) orientation exhibiting a smaller effect compared to Mo(001). The overall results indicated that Mo has a relatively small resistivity size effect, making it a promising conductor for narrow interconnects.
Article
Chemistry, Physical
Bo Feng, Haiyuan Lv, Jie Liu, Rongrong Chen, Hongyan Zhu, Xinyu Han, Caina Luan, Hongdi Xiao
Summary: In this study, high-quality p-type CuInO2 epitaxial thin films were successfully grown on GaN wafers using pulsed laser deposition technology. The films exhibited a bandgap of around 3.99 eV. The quality of the CuInO2 thin film improved with decreasing oxygen pressure, and the highest quality film demonstrated high photoresponsivity and fast response speed in a solar-blind wavelength.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Ceramics
Jie Li, Haifeng Liu, Hongwei Wu, Jiacheng Yang, Ting Deng, Sili Liu, Ruishi Xie, Baogang Guo, Xingquan Zhang, Kui Zheng, Jichuan Huo
Summary: In this work, LaNiO3 epitaxial thin films were deposited on (001) single-crystal LaAlO3 and SrTiO3 substrates using polymer assisted deposition method. Additionally, LaNiO3 polycrystalline film was coated on ceramic substrate using LaNiO3 powder obtained from precursor solution in polymer assisted deposition. The lattice mismatch between LaNiO3 and single-crystal substrates results in the distortion of NiO6 octahedrons, which increases with the intensity of strain and enhances the visible-light photoconductivity.
CERAMICS INTERNATIONAL
(2023)
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
Physics, Applied
Qiao Jin, Jiali Zhao, Manuel A. Roldan, Weiheng Qi, Shan Lin, Shengru Chen, Haitao Hong, Yiyan Fan, Dongke Rong, Haizhong Guo, Chen Ge, Can Wang, Jia-Ou Wang, Shanmin Wang, Kui-juan Jin, Er-Jia Guo
Summary: Electronic phase transition in strongly correlated materials is highly sensitive to dimensionality and crystallographic orientations. Transition metal nitrides (TMNs) have been rarely investigated due to the challenge in fabricating high-quality single crystals with proper stoichiometry. In this study, epitaxial growth and electronic properties of CrN films on different-oriented NdGaO3 (NGO) substrates were reported. Surprisingly, CrN films on (110)-oriented NGO substrates maintain a metallic phase, while the ones grown on (010)-oriented NGO substrates exhibit semiconducting behavior. The unconventional electronic phase transitions in CrN films are attributed to strain effects. Modulation of bandgap by anisotropic strain triggers the metal-to-insulator transition. This work provides a convenient approach to modify electronic ground states of functional materials using anisotropic strain and further promotes the investigation of TMNs.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Peter B. Mozhaev, Alexey Khoryushin, Jorn Bindslev Hansen, Claus S. Jacobsen
Summary: Thin films of Y:ZrO2 (YSZ) were grown on vicinal NdGaO3 substrates by pulsed laser deposition with smooth surfaces and step-flow growth mode detected for small tilt angles. The films showed good graphoepitaxial matching with the substrates for all studied tilt angles and exhibited a contracted lattice constant normal to the (110) plane with increasing film thickness, reaching a characteristic thickness for exponential saturation of rocking curves. The relaxation of substrate-induced strain with thickness likely involves the generation of dislocations.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Physics, Applied
Corbyn Mellinger, Xiao Wang, Arjun Subedi, Andy T. Clark, Takashi Komesu, Richard Rosenberg, Peter A. Dowben, Xuemei Cheng, Xiaoshan Xu
Summary: NiCo2O4 (NCO) films grown on MgAl2O4 (001) substrates were studied with magnetometry and x-ray magnetic circular dichroism based on x-ray absorption spectroscopy and spin-polarized inverse photoemission spectroscopy. The thickness dependence of the magnetic behavior was described using the finite-scaling theory with a critical exponent consistent with high perpendicular magnetic anisotropy. The interfacial layer coupled antiferromagnetically to the optimal layer, generating exchange-spring styled magnetic hysteresis in the thinnest films. The non-optimal and measurement-speed-dependent magnetic properties of the interfacial layer suggested substantial interfacial diffusion.
JOURNAL OF APPLIED PHYSICS
(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
Yogesh Sharma, Binod Paudel, Amanda Huon, Matthew M. Schneider, Pinku Roy, Zachary Corey, Rico Schonemann, Andrew C. Jones, Marcelo Jaime, Dmitry A. Yarotski, Timothy Charlton, Michael R. Fitzsimmons, Quanxi Jia, Michael T. Pettes, Ping Yang, Aiping Chen
Summary: This study investigates the relationship between strain engineering, point defects, and ferromagnetism in actinide epitaxial thin films, and provides new insights into the influence of coupled order parameters on the emergent properties of actinide materials.
Article
Physics, Applied
Urska Trstenjak, Nina Daneu, Iegor Rafalovskyi, Jamal Belhadi, Damjan Vengust, Jiri Hlinka, Matjaz Spreitzer
Summary: Understanding the relationship between the structural characteristics and functional properties of complex relaxor ferroelectric thin films is crucial for designing high-performance materials. This study analyzed the structure of epitaxial relaxed pulsed-laser-deposited PMN-xPT thin films and revealed the preference of the tetragonal-like ferroelectric phase with polarization perpendicular to the film. The results were supported by electromechanical property measurements, showing a locally non-centrosymmetric structure.
APPLIED PHYSICS LETTERS
(2022)
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
Materials Science, Multidisciplinary
Lei Cao, Andreas Herklotz, Diana Rata, Chenyang Yin, Oleg Petracic, Ulrich Kentsch, Manfred Helm, Shengqiang Zhou
Summary: The efficient control of vacancy profiles in epitaxial La0.7Sr0.3MnO3-delta thin films through helium implantation leads to significant changes in physical properties, transitioning from ferromagnetic metallic to antiferromagnetic insulating, with a substantial increase in resistivity by four orders of magnitude at room temperature. This result offers an attractive means for tuning the emergent physical properties of oxide thin films through a strong coupling between strain, defects, and valence.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Shengru Chen, Qinghua Zhang, Dongke Rong, Yue Xu, Jinfeng Zhang, Fangfang Pei, He Bai, Yan-Xing Shang, Shan Lin, Qiao Jin, Haitao Hong, Can Wang, Wensheng Yan, Haizhong Guo, Tao Zhu, Lin Gu, Yu Gong, Qian Li, Lingfei Wang, Gang-Qin Liu, Kui-juan Jin, Er-Jia Guo
Summary: This study reports the creation of morphotropic grain boundaries in laterally interconnected cobaltite homostructures. By modulating and isolating electronic states and magnetic behavior through the grain boundaries, artificially engineered functionalities can be achieved in the planar matrix.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jingwen Huang, Chengjian Li, Kun Han, Liqiang Xu, Chengcheng Xu, Song Dai, Wenbin Wu, Zhen Huang, Pingfan Chen
Summary: By manipulating the thickness, growth temperature, and oxygen pressure of the SrTiO3 layer, the transport properties and electronic states of the LaAlO3/SrTiO3 bilayers can be subtly tuned. The bilayer 2DES exhibits higher low-temperature carrier density and enhanced carrier mobility compared to the conventional 2DES. In the case of the semiconducting bilayer 2DES, low-field negative minimum and enhanced anisotropy are observed.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Kai Liu, Feng Jin, Xingchang Zhang, Kuan Liu, Zixun Zhang, Enda Hua, Jinfeng Zhang, Huan Ye, Guanyin Gao, Chao Ma, Lingfei Wang, Wenbin Wu
Summary: This study systematically investigates and explores the enhancement of ferroelectricity in hafnium oxides by anisotropic strain-mediated symmetry engineering. The results show that different types of anisotropic strains can affect the ferroelectricity by tuning the structural symmetry and phase ratio.
ADVANCED FUNCTIONAL MATERIALS
(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
Physics, Applied
Shuang-Shuang Li, Ying Zhang, Jing-Shi Ying, Zao-Cai Wang, Jian-Min Yan, Guan-Yin Gao, Mao Ye, Ren-Kui Zheng
Summary: Epitaxial growth of SrIrO3 (SIO) thin films on (001)-oriented 0.7Pb(Mg1/3Nb2/3)O-3-0.3PbTiO(3) (PMN-PT) single-crystal substrates enables in situ tuning and modulation of the electronic transport properties of SIO films through strain induced by ferroelectric domain rotation, piezoelectric effect, and structural phase transition in the PMN-PT layer. Furthermore, the weak negative magnetoresistance (MR) of the SIO films can be modified by applying an electric field to the PMN-PT layer, showing in-plane compressive strain-induced suppression of quantum corrections to the conductivity in the SIO film. These results demonstrate the importance of electric-field controllable lattice strain in understanding the strain-property relationships of 5d iridate thin films.
JOURNAL OF APPLIED PHYSICS
(2023)
Letter
Materials Science, Multidisciplinary
Ai-Ji Wang, Liang Yang, Jian Ge, Gong-Xun Deng, Yu-Ben Yang, Jing-Di Lu, Yue-Lin Zhang, Yin-Shu Wang, Hai-Ming Yu, Ling-Fei Wang, Ce-Wen Nan, Jin-Xing Zhang
Article
Chemistry, Multidisciplinary
Mengsha Li, Pingfan Chen, Yingli Zhang, Yuan Zhang, Zhenghao Liu, Chunhua Tang, Jing Yang Chung, Mingqiang Gu, Junxue Li, Zhen Huang, Gan Moog Chow, Changjian Li, Stephen J. Pennycook
Summary: Nanocomposite films show promise for multifunctional devices by integrating different functionalities within a single film. The microstructure of the precipitate/secondary phase plays a crucial role in determining the properties of composites. However, there has been limited study on quantitatively characterizing the interphase strain between different phases. In this study, a PbTiO3(PTO)/PbO composite system was prepared in nano-spherical and nanocolumnar configurations. The nanocolumnar structure exhibited a much larger and more uniform strained region in PTO, resulting in enhanced ferroelectric properties.
Article
Physics, Condensed Matter
Jingwen Huang, Song Dai, Chengcheng Xu, Yongyi Du, Zhipeng Xu, Kun Han, Liqiang Xu, Wenbin Wu, Pingfan Chen, Zhen Huang
Summary: It is less studied to modify the capping layer in the SrTiO3-layer-carried 2DES. Several SrTiO3 bilayers with different crystalline and amorphous oxide capping layers were fabricated. The interfacial conductance and carrier mobility showed different behaviors in both crystalline and amorphous bilayer 2DES.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Editorial Material
Materials Science, Multidisciplinary
Zhen Huang, Xiao Renshaw Wang, Shixiong Zhang, Chuan Li
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2023)
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
Physics, Applied
Kun Han, Minmin Xie, Yufei Mei, Renju Lin, Liqiang Xu, Pingfan Chen, Penghui Yin, Shengwei Zeng, Binghui Ge, Ariando Ariando, Dongsheng Song, X. Renshaw Wang, Wenbin Wu, Zhen Huang
Summary: The discovery of superconductivity in doped infinite-layer nickelates has attracted great interest. In this study, a metal-insulator-superconductor transition is demonstrated by engineering the process of topotactic reduction. The researchers found an insulating intermediate state within the transition, as well as optimizing the superconductivity by fully reducing the sample. This study provides valuable insight into understanding and manipulating superconductivity in infinite-layer nickelates.
APPLIED PHYSICS LETTERS
(2023)