Article
Chemistry, Physical
Nanthakishore Makeswaran, Cristian Orozco, Anil K. Battu, Eva Deemer, C. V. Ramana
Summary: This study focused on the nanoscale structure, phase, and electronic properties of nanocrystalline Mo films with variable microstructure and grain size. The results showed that the deposition temperature and grain size significantly affected the hardness, elastic modulus, plasticity index, wear resistance index, optical properties, and electrical conductivity of the Mo films.
Article
Engineering, Electrical & Electronic
S. Ananthi, T. S. Senthil, R. Kannan, E. Ranjith Kumar
Summary: In this study, NiMoW thin films were successfully co-deposited on copper substrates. The films were characterized for their structural, mechanical, and magnetic properties. The results showed that the films deposited for 60 minutes exhibited the best mechanical and magnetic properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
A. Borroto, S. Bruyere, S. Migot, C. de Melo, D. Horwat, J. F. Pierson
Summary: This study provides new insights into the formation of Zr-Cu nanostructured metallic glass thin films (NMGTF) deposited by magnetron sputtering. The film microstructure can be tuned from homogeneous and compact to nanostructured, formed by nanocolumns, by varying the working-gas pressure and the alloy composition. The microstructural change allows the electrical resistivity and the optical reflectance of the films to be tailored, and the results could have potential applications in the field of optoelectronics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Danagul Shauyenova, Sol Jung, Haneul Yang, Haein Yim, Heongkyu Ju
Summary: Co-based thin-film metallic glass (TFMG) was studied for its structural, electrical, and optical properties. The TFMGs exhibit characteristics of a dielectric material, with higher resistivity and lower carrier concentration compared to pure cobalt thin films of the same thickness. Optical investigation revealed positive real part of complex relative dielectric constant and significant light absorption properties in TFMGs. Moreover, Co-based TFMG showed optical transparency at thicknesses below 5 nm and demonstrated thickness-independent electrical and optical parameters, making them potentially useful for micrometer-scale optoelectronic and magneto-optical devices.
Article
Materials Science, Coatings & Films
Felipe Cemin, Saron R. S. de Mello, Carlos A. Figueroa, Fernando Alvarez
Summary: Single-phase crystalline NbTaTiVZr high-entropy alloy thin films were successfully achieved through appropriate selection of alloying elements and synthesis conditions, leading to specific structural modifications and improved mechanical properties. Controlling synthesis variables such as substrate biasing and heating can eliminate traditional crystallization strategies and provide potential applications for high-entropy alloy thin films in the field of refractory coating materials.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Chemistry, Physical
Yanfeng Wang, Fei Yang, Zhengjun Zhang, Yiping Zhao
Summary: Transparent metallic films (TMFs) are the best candidates among transparent conductive films (TCFs) due to their ability to maintain high electrical conductivity and optical transparency simultaneously under mechanical deformation. Empirical relationships and a figure-of-merit expression have been proposed to predict the overall quality and performance of TMFs, particularly in silver nanohole array TMFs. The experimental data and theoretical predictions show that a beta value of 5 is better for characterizing the performance of nanohole array TMFs compared to beta value of 10 for TCFs.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Navid Daryakar, Christin David
Summary: The nonlinear optical response of metallic amorphous composite layers was studied, and it was found that the fill fraction strongly influences the effective nonlinear susceptibility of the materials. Both saturated and induced absorption were observed depending on the selected frequency and relative position to the resonant frequency.
Article
Materials Science, Multidisciplinary
Yufei Li, Xihui Yang, Hua Bai, Mingzhi Wang, Dashuai Cheng, Cheng Song, Zhe Yuan, Yi Liu, Zhong Shi
Summary: In this study, high-quality rare-earth iron garnet (ReIG) Tb3Fe5O12 (TbIG) thin films were successfully grown on garnet substrates with different lattice constants. The effects of film strain on the properties of TbIG films were investigated, and it was observed that the distance between magnetic atoms and the corresponding exchange interactions varied due to the strain. This work provides a method to optimize spin-orbit torque devices based on ReIG.
Article
Nanoscience & Nanotechnology
Ehsan Ghasali, Davoud Ghahremani, Yasin Orooji
Summary: Ti laminated composites were successfully prepared by using metallic additive powders between Ti sheets and spark plasma sintering process. Different metallic additives such as Mo, Cr, Si, and Co were inserted between Ti layers to form unique composite structures, resulting in varied mechanical properties. The highest Vickers hardness and bending strength were observed in Ti-Si and Ti-Cr laminated composites, respectively, indicating the potential for tailored performance through appropriate additive selection.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2021)
Article
Nanoscience & Nanotechnology
Takayuki Harada, Yoshinori Okada
Summary: Metallic delafossites, as layered oxides with quasi-two-dimensional conduction layers, possess high conductivity and surface polarity. They can be utilized in thin films and heterostructures.
Review
Chemistry, Multidisciplinary
Zhongkai Cheng, Deirdre M. O'Carroll
Summary: Photon recycling is crucial in the study of semiconductor materials, impacting their optoelectronic applications; however, further in-depth theoretical and experimental studies are needed to demonstrate its advantages and importance rigorously.
Article
Green & Sustainable Science & Technology
Victor Hjort, Niraj Kumar Singh, Susmita Chowdhury, Rui Shu, Arnaud Le Febvrier, Per Eklund
Summary: Thin films of CrMoVN were deposited on sapphire substrate to investigate the effects of Mo and V on CrN-based films. Mo incorporation affects crystal structure and nitrogen content, while vanadium increases the phase-stability of the cubic phase. Alloying leads to a decrease in Seebeck coefficient and resistivity. Cr0.83Mo0.11V0.06Nz film shows a 70% increase in power factor compared to CrNz.
ADVANCED ENERGY AND SUSTAINABILITY RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Peter R. Stevenson, Robert T. Busch, Riccardo Torsi, Ali M. Jawaid, Rahul Rao, David B. Lioi, Joshua A. Robinson, Nicholas R. Glavin, Richard A. Vaia, W. Joshua Kennedy, Jonathan P. Vernon
Summary: This study demonstrates that changes in the optical response of monolayer MoS2 can be attributed to variations in the amplitude of measured excitons, suggesting the importance of charge transfer and local dielectric effects in quantum nanophotonic interactions. Additionally, reversible changes in the refractive index are observed due to dopant-induced screening effects, indicating the potential for tailored manipulation of optical constants in transition metal dichalcogenides. The findings highlight the significant impact of chemical adsorbates and film quality on the optical properties of MoS2 films, with implications for the development of advanced semiconductor nanophotonic technologies.
Article
Chemistry, Physical
Ashin Shaji, Karol Vegso, Michaela Sojkova, Martin Hulman, Peter Nadazdy, Yuriy Halahovets, Lenka Pribusova Slusna, Tatiana Vojtekova, Jana Hrda, Matej Jergel, Eva Majkova, Joerg Wiesmann, Peter Siffalovic
Summary: This study provides a comprehensive in-situ investigation of the chemical reactions during the growth of MoS2 thin film using chemical vapor deposition (CVD). The results demonstrate the phase transformations of MoO3 to MoO2 and MoO2 to MoS2, highlighting the importance of understanding these chemical reactions for optimizing the properties of the final 2D TMD films.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Zhongguo Li, Zhendong Wu, Xiaolong Wang, Hongtao Cao, Lingyan Liang, Junyi Yang, Yinglin Song
Summary: The study demonstrates the fabrication of amorphous zinc tin oxide thin films with strong visible light absorption using rf magnetron sputtering and rapid postannealing. The ultrafast carrier dynamics of the ternary films were investigated using femtosecond transient absorption spectroscopy, revealing that visible light absorption is induced by band gap reduction rather than defect states in the ZTO film. These findings shed light on the photophysical mechanism of amorphous ZTO films and suggest their potential use in solar cell and photodetector devices.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
