Article
Chemistry, Multidisciplinary
Lihui Zhang, Xiaobo Li, Fenfa Yao, Longren Li, Hongyang Huang, Xuewen Zhao, Shuhao Liu, Yonghong Cheng, Hua Xu, Jinying Zhang
Summary: This study reports a fast and nondestructive method to determine the crystallographic orientation of 2D violet phosphorus nanoflakes using Raman spectroscopy. It was found that the nanoflakes have specific in-plane cleavage edges and edge alignment. The direction of the b-axis (a-axis) can be identified by measuring the intensity of the A(g) mode in the Raman spectrum, specifically the appearance or disappearance of the 491 cm(-1) peak, relative to the cleavage edge.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
B. Aashranth, Gyan Shankar, M. Arvinth Davinci, Dipti Samantaray, Utpal Borah, Satyam Suwas
Summary: The study found that the softening mechanisms in P91 martensitic steel during thermo-mechanical processing are mainly influenced by the interaction between microstructural strain, texture, and phase transformation, and the softening characteristics vary with the processing parameters.
JOURNAL OF MATERIALS RESEARCH
(2021)
Article
Energy & Fuels
Thi-Thong Ho, Efat Jokar, Shaham Quadir, Ruei-San Chen, Fang-Chen Liu, Cheng-Ying Chen, Kuei-Hsien Chen, Li-Chyong Chen
Summary: Tin monosulfide (SnS) is a promising light-harvesting material for solar cells due to its potential for large-scale production, cost-effectiveness, eco-friendly source materials, and long-term stability. By controlling the crystal growth orientation and substrate tilting angle, the transfer of charge carriers and power conversion efficiency (PCE) can be enhanced.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Materials Science, Ceramics
Housei Akazawa
Summary: This report introduces a method to evaluate the crystallographic orientation and crystallinity of HAp thin films using Raman scattering spectroscopy. By analyzing the Raman spectra, the presence or absence of certain signals can indicate the orientation of HAp crystals. Another approach involves evaluating crystallinity based on the line width of specific Raman signals.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
James C. Gallagher, Travis J. Anderson, Andrew D. Koehler, Mona A. Ebrish, Geoffrey M. Foster, Michael A. Mastro, Jennifer K. Hite, Brendan P. Gunning, Robert J. Kaplar, Karl D. Hobart, Francis J. Kub
Summary: This work focuses on fabricating vertical p-i-n GaN diodes using Raman spectroscopy to monitor carrier concentration, discovering that the uniformity of the wafers affects device performance. Avoiding electron-donating defects in the wafers significantly improves rectification ratio and reduces reverse bias leakage current.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Geochemistry & Geophysics
Xin Zhong, Anselm Loges, Vladimir Roddatis, Timm John
Summary: Raman spectroscopy is widely used in mineralogy and petrology for identifying mineral phases, including measuring residual pressure of mineral inclusions and understanding the crystallographic orientations between inclusions and hosts. The analysis of tiny mineral inclusions using EBSD technique is time consuming, but polarized Raman spectroscopy can provide precise measurement of crystallographic orientation. The orientation of tiny mineral inclusions can be accurately determined using the Raman polarizability tensor of quartz, with a precision of approximately 0.25 degrees.
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
(2021)
Article
Chemistry, Physical
E. Zielony, R. Szymon, A. Wierzbicka, A. Reszka, M. Sobanska, W. Pervez, Z. R. Zytkiewicz
Summary: In this study, Raman scattering and X-ray diffraction techniques were used to investigate strain and lattice vibration mechanisms in self-assembled GaN-AlxGa1-xN nanowire structures. The analysis of Raman spectra and XRD data provided insights into the chemical composition, strain, and lattice vibration mechanisms in these nanowires.
APPLIED SURFACE SCIENCE
(2022)
Article
Spectroscopy
Phyllis K. Morgan, Timothy A. Prusnick, Michael A. Velez, Karl Rickert, David B. Turner, James Matthew Mann
Summary: The study systematically investigates polarized Raman scattering of high-quality, hydrothermally grown, single crystals of urania and thoria, revealing that parallel polarized peak intensity can be used to determine the orientation and rotational alignment of crystal faces.
JOURNAL OF RAMAN SPECTROSCOPY
(2021)
Article
Materials Science, Coatings & Films
Anna Jansson, Leon Zendejas Medina, Lisa Lautrup, Ulf Jansson
Summary: This study investigates the impact of substrate bias on the growth of CoCrFeMnNi coatings on a 316 L stainless steel substrate using magnetron sputtering. The growth behavior and surface morphologies were studied on individual substrate grains with different orientations. The results showed that the coating was not strongly influenced by the substrate at a floating bias, but at a bias of -100 V, it exhibited different growth patterns on <102>-oriented and <111>-oriented grains. Additionally, a small difference in growth rate was observed on different substrate orientations, which could be attributed to variations in energy transfer and diffusion rates during growth.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Wei Tong, Li Liang, Huijuan Wang
Summary: A systematic investigation was carried out on the microstructural and crystallographic characteristics of martensite micro-variants in Ni54Mn25Ga20.9Dy0.1 ferromagnetic shape memory alloy. The alloy exhibited a dual-phase microstructure consisting of self-accommodated tetragonal martensite and hexagonal Dy-rich dispersive precipitates. Four distinct micro-variants with different crystallographic orientations were found in each colony, with adjacent variant pairs connected by crossing-interfaces having a non-twinned relationship and other pairs connected by extending-interfaces being twin-related. The corresponding twinning planes and directions were {112} and <111>, respectively, although the twinning relationships of these twin-related micro-variant pairs were not perfect, and contained a small rotation. Interface analysis showed that these two types of interface planes coincide with the orientation relationship planes and twinning planes of the connecting micro-variants, respectively.
MATERIALS SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Jee S. Shim, Dong H. Go, Hyeon G. Beom
Summary: This study conducted tensile tests on aluminum/silicon vertically cracked nanofilm/substrate systems using atomistic simulations, analyzing the effects of crystallographic orientations and thicknesses on system reliability. The results revealed that certain crystallographic orientations led to lower reliability due to crack penetration into the substrate, which was related to a high coincidence of atomic matching between interfaces. Interface energy calculations in simulation models validated this phenomenon.
Article
Mineralogy
Matthew S. Tarling, Matteo Demurtas, Steven A. F. Smith, Jeremy S. Rooney, Marianne Negrini, Cecilia Viti, Jasmine R. Petriglieri, Keith C. Gordon
Summary: The study found that the serpentine mineral lizardite has strong Raman anisotropy in the OH-stretching region, and the wavenumber shifts depend on the orientation of the excitation laser relative to the crystallographic axes. By studying well-characterised lizardite samples, the relationship between crystallographic orientation and Raman wavenumber was quantified, providing a simple and cost-effective technique for measuring and quantifying lizardite-bearing serpentinite fault rocks. This technique is particularly useful when EBSD alone is insufficient.
EUROPEAN JOURNAL OF MINERALOGY
(2022)
Article
Materials Science, Multidisciplinary
Satria Robi Trisnanto, Xianglong Wang, Mathieu Brochu, Sasha Omanovic
Summary: The corrosion behavior of single-crystalline-like stainless steel produced by laser powder bed fusion (LPBF) was investigated and compared with polycrystalline and wrought counterparts. LPBF samples exhibited better corrosion resistance and higher pitting corrosion potential than wrought SS316L samples. These findings provide insights into tailoring the crystallographic texture of LPBF-SS316L to improve its corrosion performance.
Article
Materials Science, Multidisciplinary
Carlos Rodriguez-Fernandez, Kim Akius, Mauricio Morais de Lima, Andres Cantarero, Jan M. van Ruitenbeek, Carlos Sabater
Summary: Experimental studies show that Bi films thicker than 20 nm are crystalline and oriented in the (111) direction, while even ultra-thin layers down to 5 nm retain the rhombohedral structure. Furthermore, the research results indicate that bismuth films exposed to ambient conditions do not undergo significant surface oxidation.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Chemistry, Physical
Panjun Wang, Lingwei Ma, Xuequn Cheng, Xiaogang Li
Summary: Low alloy steels with different textures were prepared by advanced thermo-mechanical processes, and their microstructures, passive performance, and chloride-ion pitting behaviors were characterized using various techniques. The results revealed that crystallographic orientation significantly affects passive performance and pitting resistance in bicarbonate solution, with (1 1 1) texture showing better resistance compared to (1 1 0) texture.
APPLIED SURFACE SCIENCE
(2021)