Article
Physics, Applied
A. A. Burema, T. Banerjee
Summary: Strain-engineering affects the magnetoresistance properties of La0.67Sr0.33MnO3 thin films, allowing the definition of three distinct temperature-dependent phases, including fourfold and twofold symmetric signals.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Physical
Kaiming Qiao, Yuhang Liang, Hu Zhang, Fengxia Hu, Ziyuan Yu, Yi Long, Jing Wang, Jirong Sun, Tongyun Zhao, Baogen Shen
Summary: This study investigates the growth mechanism of FeRh films and their impact on phase transition and magnetocaloric effect. By changing the substrates, the phase transition temperature and entropy changes of FeRh films can be controlled, resulting in regulated entropy changes and refrigeration capacity in a wide temperature span.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Hao Liu, Yamei Wang, Huan Zheng, Shuhao Wang, Run Zhao, Lei Zhang, Langsheng Ling, Haiyan Wang, Hao Yang, Jiyu Fan
Summary: In this study, the influence of thickness-dependent strain effect on the ferromagnetic insulating properties of LCO was investigated. It was found that the film strain decreased and the ferromagnetic property weakened with increasing film thickness, and the spin moment of Co3+ ions also reduced with increasing thickness. Increasing film thickness was unfavorable for the presence of eg electrons and for the intermediate-spin and high-spin states.
APPLIED SURFACE SCIENCE
(2024)
Article
Materials Science, Multidisciplinary
M. A. Hamad, O. M. Hemeda, Hatem R. Alamri, A. M. Mohamed, Mohamed E. Harb
Summary: The study simulated the magnetization versus temperature dependence of highly (001)-oriented LSM thin films prepared under different oxygen growth pressures to predict magnetocaloric effect. Results show that the MCE of these films is strongly tunable with oxygen growth pressure and is enhanced with increasing pressure. Comparison with other works indicates that the MCE parameters of these films are considerably larger and comparable, suggesting their potential use as functional materials in magnetic refrigeration.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Physics, Applied
Yifei Wang, Xinxin Fan, Xiaoyu Feng, Xiaohu Gao, Yunfei Ke, Jiguang Yao, Muhan Guo, Tao Wang, Lvkang Shen, Ming Liu, Desheng Xue, Xiaolong Fan
Summary: This study investigates the damping behavior of LSMO epitaxial films as a function of thickness and temperature. The competition between two scattering types, s-like and ?-like, results in complex damping behavior. The behavior of s-like damping is consistent with magnetic metal films, while ?-like damping is greatly influenced by the distortion of oxygen octahedra controlled by film thickness.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
S. Passanante, L. P. Granja, C. Albornoz, D. Vega, D. Goijman, M. C. Fuertes, C. Ferreyra, L. Ghivelder, F. Parisi, M. Quintero
Summary: The magnetic and magnetocaloric properties of bilayers and single layer manganite thin films were studied, and it was found that the bilayers can broaden the temperature range of the magnetocaloric effect without reducing the refrigerant capacity, offering potential for refrigeration device applications.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Materials Science, Ceramics
Yun Mei, Zongfan Duan, Zhangyuan Li, Yuanxin Zhao, Jingyi Ni, Yulong Li, Jingyu Zhang, Yingrong Chen, Xianhui Wang, Gaoyang Zhao
Summary: The study explores the influence of Co2+ doping on the properties of Bi4Ti3O12/La0.67Sr0.33MnO3 composite thin films, showing that the BITC0.05/LSMO composite thin film exhibits excellent multiferroic properties with optimal magnetoelectric performance.
CERAMICS INTERNATIONAL
(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
Materials Science, Multidisciplinary
Jieun Kim, Derek J. Meyers, Abinash Kumar, Abel Fernandez, Gabriel A. P. Velarde, Zishen Tian, Jong-Woo Kim, James M. LeBeau, Philip J. Ryan, Lane W. Martin
Summary: The dynamics of polarization evolution and rotation in 0.68PbMg(1/3)Nb(2/3)O(3)-0.32PbTiO(3) relaxor ferroelectric thin films have been studied via in operando synchrotron-based X-ray diffraction. A frequency-limited suppression of polarization rotation was observed above ultrasonic frequencies (>= 20 kHz). The suppression at ultrasonic frequencies is attributed to the large activation field needed to move domain walls when the polarization rotates between different monoclinic phases.
Article
Materials Science, Multidisciplinary
Murtaza Bohra, Prakhar Gupta, Dharohar Sahadot, Anil Annadi, Vidyadhar Singh, Jean-Francois Bobo
Summary: This study introduces the growth of iron oxide thin films for designing magnetocaloric materials and screens potential candidates using a phenomenological model. By manipulating the nanoscale ordering temperatures, these films exhibit inverse magnetocaloric effect and magnetocaloric effect. The utilization of textured growth to tailor magneto-structural coupling is predicted as a novel approach for engineering magnetocaloric materials.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Physical
M. Y. Ruan, C. Q. Yang, L. Wang, P. B. Jin, Z. L. Guo, X. L. Wei, W. X. Wu
Summary: The magnetization and electron spin resonance in nanocrystals of antiferromagnet GdVO4 were investigated, showing enhanced paramagnetic-like behavior with smaller grain sizes. Further reduction in grain size to around 30 nm resulted in dramatic decrease in saturation magnetization and negative entropy change. The aggregation effect was believed to be responsible for this decline.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Multidisciplinary
Yuelin Zhang, Lutong Sheng, Jilei Chen, Jie Wang, Zengtai Zhu, Rundong Yuan, Jingdi Lu, Hanchen Wang, Sijie Hao, Peng Chen, Guoqiang Yu, Xiufeng Han, Haiming Yu
Summary: This study experimentally observed the nonlinear three-magnon scattering in La0.67Sr0.33MnO3 thin films, revealing the nonlinear magnetic dynamics and offering potential applications in oxide magnonics and nonlinear magnonic devices.
Article
Materials Science, Multidisciplinary
Xiong Zhang, Hui Yang, Guoliang Wang, Yi Zhang, Jijie Huang
Summary: Flexible perovskite manganite oxide films with excellent low-field magnetoresistance (LFMR) effect were achieved by depositing textured LSMO:ZnO nanocomposite film on a flexible mica substrate with a ZnO buffer using pulsed laser deposition (PLD). Compared to the film without buffer, the film with a ZnO buffer exhibited higher saturation magnetization, higher Curie temperature and higher magnetoresistance value at low temperature and high magnetic field. Furthermore, the nanocomposite thin films showed good mechanical stretchability and stability.
FRONTIERS IN MATERIALS
(2022)
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
Crystallography
Hongxia Tian, Xiong Zhang, Abdullah Alodhayb, Feng Wang, Jie Jian, Jijie Huang
Summary: This study successfully fabricates vertically aligned nanocomposite thin films on flexible mica and investigates their properties and potential applications.
Article
Materials Science, Multidisciplinary
Yang Zhang, Fei Xue, Zuhuang Chen, Jun-Ming Liu, Long-Qing Chen
Article
Multidisciplinary Sciences
Humaira Taz, Bhagwati Prasad, Yen-Lin Huang, Zuhuang Chen, Shang-Lin Hsu, Ruijuan Xu, Vishal Thakare, Tamil Selvan Sakthivel, Chenze Liu, Mark Hettick, Rupam Mukherjee, Sudipta Seal, Lane W. Martin, Ali Javey, Gerd Duscher, Ramamoorthy Ramesh, Ramki Kalyanaraman
SCIENTIFIC REPORTS
(2020)
Article
Nanoscience & Nanotechnology
Zexin Feng, Han Yan, Xiaoning Wang, Huixin Guo, Peixin Qin, Xiaorong Zhou, Zuhuang Chen, Hui Wang, Zhengying Jiao, Zhaoguogang Leng, Zexiang Hu, Xin Zhang, Haojiang Wu, Hongyu Chen, Jingmin Wang, Tianli Zhang, Chengbao Jiang, Zhiqi Liu
ADVANCED ELECTRONIC MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Shanquan Chen, Shuai Yuan, Zhipeng Hou, Yunlong Tang, Jinping Zhang, Tao Wang, Kang Li, Weiwei Zhao, Xingjun Liu, Lang Chen, Lane W. Martin, Zuhuang Chen
Summary: The paper explores recent advances in the study of topological spin/polarization structures in ferroic materials, including the evolution of topological spin structures and exotic polar topologies in magnetic thin films and ferroelectric oxide films. It discusses the control of these structures and emergent phenomena through factors such as epitaxial strain, layer thickness, electric fields, and magnetic fields. Additionally, the paper provides a brief overview and prospectus for the future development of the field in the coming years.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Zeyu Jin, Juan Lyu, Yi-Lu Zhao, Huanglong Li, Zuhuang Chen, Xi Lin, Guoqiang Xie, Xingjun Liu, Ji-Jung Kai, Hua-Jun Qiu
Summary: A generic dealloying procedure was introduced to fabricate nanoporous high-entropy oxides (HEO) as OER catalysts, incorporated with nanoscale Pt or PtPdCuAgAu particles as ORR catalysts. Experimental results and DFT calculations demonstrate that Pt clusters can enhance ORR activity through strong interactions with the HEO substrates, while also boosting the OER performance. This multicomponent HEO/metal composite system shows potential to provide new combinatorial materials design for multiple catalytic functionalities.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Chuanwei Huang, Zhaolong Liao, Mingqiang Li, Changxin Guan, Fei Jin, Mao Ye, Xierong Zeng, Tianjin Zhang, Zuhuang Chen, Yajun Qi, Peng Gao, Lang Chen
Summary: A practical and universal method is demonstrated to achieve highly strained phases in Pb-based ferroelectric films, which possess unexpected enhancements in properties such as Poisson's ratio, negative thermal expansion, spontaneous polarization, and Curie temperature, surpassing their bulk counterparts. This strategy efficiently overcomes the limitations of discrete substrates and enables continuous regulations of exploitable lattice states in functional oxide films.
Article
Chemistry, Multidisciplinary
Zeyu Jin, Juan Lyu, Kailong Hu, Zuhuang Chen, Guoqiang Xie, Xingjun Liu, Xi Lin, Hua-Jun Qiu
Summary: In this study, a series of high-entropy catalysts were synthesized by a chemical dealloying method, which found that increasing entropy effect and non-noble metal contents aid in the formation of complete oxides with low crystallinity. An optimal eight-component high-entropy oxide was identified, demonstrating enhanced catalytic activity and stability, making it suitable for a wide range of applications.
Article
Nanoscience & Nanotechnology
Chenhan Liu, Zuhuang Chen, Chao Wu, Jing Qi, Menglong Hao, Ping Lu, Yunfei Chen
Summary: This study reports a strategy of electric field-driven crystal symmetry engineering to efficiently modulate thermal conductivity at room temperature, and successfully fabricates a thermal switch prototype based on this strategy.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Yangyang Si, Tianfu Zhang, Zuhuang Chen, Qinghua Zhang, Shuai Xu, Ting Lin, Haoliang Huang, Chao Zhou, Shanquan Chen, Suzhen Liu, Yongqi Dong, Chenhan Liu, Yunlong Tang, Yalin Lu, Kuijuan Jin, Er-Jia Guo, Xi Lin
Summary: This study successfully fabricated high-quality PbZrO3 epitaxial thin films and revealed their unique noncentrosymmetric nature and high Curie temperature. The incipient ferroelectric behavior above the Curie temperature was observed for the first time. These findings contribute to a better understanding of PbZrO3 thin films and open up possibilities for practical applications in modern electronic devices.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Physics, Applied
Wenbo Ma, Shuai Yuan, Lele Ma, Yulan Liu, Biao Wang, Zuhuang Chen
Summary: Phase-field simulations were used to study domain structures in (001)-oriented PbZr0.4Ti0.6O3 epitaxial thin films. The results showed that the vortex-array state area in the phase diagram enlarges with the decrement of the depolarization field, which is contrary to the general view. A strain-mediated ferroelectric failure mechanism was also found.
APPLIED PHYSICS LETTERS
(2022)
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
Materials Science, Multidisciplinary
Xianlong Cheng, Chao Zhou, Baichen Lin, Zhenni Yang, Shanquan Chen, Kelvin H. L. Zhang, Zuhuang Chen
Summary: Fluorite-structured Hf0.5Zr0.5O2 (HZO) thin films have gained attention for their good CMOS-compatibility and robust ferroelectricity. However, the challenges of high leakage current and poor endurance hinder the application of HZO in microelectronic devices. This study investigates the electric properties of Pt/HZO/La0.7Sr0.3MnO3 (LSMO) heterostructures and finds that the leakage mechanism is dominated by Schottky emission. By post-annealing in oxygen atmosphere, the barrier height can be increased, effectively reducing leakage current and improving endurance.
APPLIED MATERIALS TODAY
(2023)
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
Engineering, Electrical & Electronic
Xinyu He, Tao Wang, Xudong Li, Sujit Das, Xingjun Liu, Zuhuang Chen
Summary: Piezoelectric ceramics with high performance and thermal stability are crucial for actuation and sensing applications in harsh environments. However, it is challenging to develop such ceramics due to the trade-off between enhanced piezoelectric response and thermal stability. This study presents a piezoceramic material that exhibits a balanced trade-off near the morphotropic phase boundary (MPB), retaining a high piezoelectric coefficient and well-squared shape hysteresis loop even at high temperatures. The substitution of Sm induces a relaxor behavior in the ceramics, offering great promise for high temperature piezoelectric applications.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yanyi Zhang, Juan Lyu, Yi-Lu Zhao, Kailong Hu, Zuhuang Chen, Xi Lin, Guoqiang Xie, Xingjun Liu, Hua-Jun Qiu
Summary: A scalable chemical dealloying procedure was introduced to synthesize stable bifunctional catalysts for hybrid Zn-Ag/Zn-air batteries, consisting of Ag nanoparticles for ORR and multicomponent HEOs for OER. By precisely controlling the content of Ag nanoparticles, both ORR performance and Zn-Ag battery capacity can be optimized, achieving high energy density. Stabilized noble metals in HEO nanocomposites show potential as multifunctional electrocatalysts in various energy conversion devices.
