☆ 4.4 Article Proceedings Paper

An atomic mechanism for the boson peak in metallic glasses

PHILOSOPHICAL MAGAZINE (2008)

期刊

PHILOSOPHICAL MAGAZINE

卷 88, 期 33-35, 页码 3885-3900

出版社

TAYLOR & FRANCIS LTD

DOI: 10.1080/14786430802477976

关键词

glasses; elasticity; vibrations; low temperature anomalies

类别

Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Physics, Applied Physics, Condensed Matter

向作者/读者索取更多资源

Protocol

Reagent

摘要

The boson peak in metallic glasses is modelled in terms of local structural shear rearrangements. Using Eshelby's solution of the corresponding elasticity theory problem, one can calculate the saddle point energy of such a structural rearrangement. The neighborhood of the saddle point gives rise to soft resonant vibrational modes. One can calculate their density, their kinetic energy, their fourth-order potential term and their coupling to longitudinal and transverse sound waves.

作者

我是这篇论文的作者

点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.4

评分不足

次要评分

新颖性

-

重要性

-

科学严谨性

-

评价这篇论文

推荐

Article Chemistry, Physical

Low-energy quasilocalized excitations in structural glasses

Edan Lerner, Eran Bouchbinder

Summary: Glassy solids exhibit a wide variety of thermomechanical properties, which are believed to be related to nonphononic, low-energy quasilocalized excitations (QLEs). Recent computer simulations have revealed the emergence of QLEs during vitrification upon cooling from a melt. Progress has been made in understanding the emergence of QLEs in structural glasses over the past three decades, but challenges still exist.

JOURNAL OF CHEMICAL PHYSICS (2021)

添加到收藏夹

Article Materials Science, Ceramics

Deconvoluting interrelationships between low-energy vibrational modes and elastic properties in CaO-Al2O3 glasses

Nektarios K. Nasikas, Angelos G. Kalampounias

Summary: By utilizing a nonconventional melting technique, researchers synthesized a series of calcium aluminate glasses and investigated the relationship between the low-frequency spectral changes and elastic properties. The study revealed a systematic dependence of the Boson Peak frequency on the CaO content, which is correlated with the elastic properties.

JOURNAL OF THE AMERICAN CERAMIC SOCIETY (2022)

添加到收藏夹

Article Materials Science, Ceramics

Preparation and structure of low-melting-point stannous chlorophosphate containing nitrogen glasses

Ting Wu, Congjuan Wang, Yujing Shen, Ying Du, Yiting Tao, Panting Wang, Danping Chen

Summary: In P-Sn-O-Cl-N glasses, the P-O-Sn structural chain formed by tin enhances the crosslinking degree of the glass, reduces the thermal expansion coefficient, and increases the Tg.

JOURNAL OF NON-CRYSTALLINE SOLIDS (2022)

添加到收藏夹

Article Nanoscience & Nanotechnology

3D Printed Silicones with Shape Morphing and Low-Temperature Ultraelasticity

Chenyang Zhang, Enze Liao, Changlin Li, Yaling Zhang, Yanqiu Chen, Ai Lu, Yu Liu, Chengzhen Geng

Summary: 3D printed silicone foam with unprecedented low-temperature elasticity is achieved by direct writing of a phenyl silicone-based pseudoplastic ink embedded with sodium chloride as sacrificial template. It demonstrates extraordinary fatigue resistance, excellent shape recovery, and energy-absorbing capability down to a low temperature of -60 degrees C after extreme compression. A unique osmotic pressure-driven shape morphing strategy during the water immersion process is reported, providing an attractive alternative to traditional 4D printed hydrogels.

ACS APPLIED MATERIALS & INTERFACES (2023)

添加到收藏夹

Article Multidisciplinary Sciences

Low-temperature nucleation anomaly in silicate glasses shown to be artifact in a 5BaO•8SiO2 glass

Xinsheng Xia, D. C. Van Hoesen, Matthew E. McKenzie, Randall E. Youngman, K. F. Kelton

Summary: Studies on silicate glasses have shown a breakdown in classical nucleation theory at low temperatures, which is actually an artifact caused by insufficient heating time.

NATURE COMMUNICATIONS (2021)

添加到收藏夹

Article Materials Science, Ceramics

New low-temperature phosphate glasses as a host for Europium Ions

Mantas Norkus, Monika Skruodiene, Gediminas Niaura, Anatolijs Sarakovskis, Ramunas Skaudzius

Summary: The study investigates the use of phosphate glasses as a suitable host material for Eu3+ ions, successfully integrating these ions into the glass. Glasses doped with Eu3+ ions exhibit typical photoluminescence spectra in low symmetry environment.

JOURNAL OF NON-CRYSTALLINE SOLIDS (2021)

添加到收藏夹

Article Polymer Science

A Poly(dimethyl-co-methylvinyl)siloxane-based elastomer with excellent ultra-low temperature elasticity driven by flexible alkyl branches

Zhen Niu, Ruiyao Wu, Lingyun Huang, Yinxin Yang, Zhu Xia, Weifeng Fan, Wu Sun, Quanquan Dai, Jianyun He, Chenxi Bai

Summary: In this study, we explored the ultra-low temperature elasticity of polydimethylsiloxane (PDMS) modified with flexible alkyl branches. The results showed that the flexible alkyl branches not only suppressed crystallization but also enhanced cross-linking activity, resulting in improved ultra-low temperature elasticity of PDMS. This research has important implications for the development of ultra-low temperature applications.

EUROPEAN POLYMER JOURNAL (2022)

添加到收藏夹

Article Multidisciplinary Sciences

Low melting oxide glasses prepared at a melt temperature of 500 °C

Hirokazu Masai, Toru Nishibe, Satoshi Yamamoto, Takaaki Niizuma, Naoyuki Kitamura, Tomoko Akai, Takahiro Ohkubo, Miki Yoshida

Summary: Inorganic low-melting phosphate glass, prepared at 500 degrees C via melting and quenching, exhibits higher thermal and light resistance properties compared to polycarbonates. The research shows that colorless transparent oxide glasses without organic components can open up new possibilities for the application of inorganic glasses.

SCIENTIFIC REPORTS (2021)

添加到收藏夹

Article Materials Science, Ceramics

Mechanical properties of oxynitride glasses

Michael J. Pomeroy, Stuart Hampshire, Jean-Christophe Sangleboeuf, Tanguy Rouxel

Summary: Oxynitride glasses have high refractoriness and remarkable mechanical properties, showing linear relationships between glass properties and nitrogen content. The improvements in mechanical properties come from the increase of atomic network cross-linking and atomic packing density. Oxynitride glasses offer advantages over oxide glasses, with higher mechanical properties and high temperature resistance.

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY (2023)

添加到收藏夹

Article Environmental Sciences

Global assessment of the sensitivity of water storage to hydroclimatic variations

Brian F. Thomas, Jamiat Nanteza

Summary: Observing basin water storage response to hydroclimatic fluxes and human water use provides valuable insight to the sensitivity of water storage to climate change. Quantifying basin water storage changes due to climate and human water use is critical for water management yet remains a challenge globally. Our study demonstrates how small shifts in hydroclimate flux may affect available water storage potentially impacting billions globally.

SCIENCE OF THE TOTAL ENVIRONMENT (2023)

添加到收藏夹

Article Mechanics

Laser short-pulse impact on magneto-photo-thermo-diffusion waves in excited semiconductor medium with fractional heat equation

Shreen El-Sapa, Kh Lotfy, A. El-Bary

Summary: This work investigates the magneto-thermodiffusion waves in an excited semiconductor medium under the influence of laser short-pulse heating. The Caputo fractional derivative is used to transform the main heat equation into dimensionless form and obtain analytical solutions. The numerical solutions are obtained using boundary conditions and the Laplace transform with the inversion method, and simulations and comparisons are presented graphically.

ACTA MECHANICA (2022)

添加到收藏夹

Article Engineering, Multidisciplinary

Multiscale, elastic, and low-density carbon fibre/siliconoxycarbide-phenolic interpenetrating aerogel nanocomposite for ablative thermal protection

Xiangyu Jin, Chen Liu, He Huang, Ruiqun Pan, Can Wu, Xiaojie Yan, Hebing Wang, Yiwu Pan, Changqing Hong, Xinghong Zhang

Summary: A needle carbon fibre enhanced siliconoxycarbide-phenolic interpenetrating aerogel nanocomposite with a hierarchical multiscale structure was developed as a potential material for ablative thermal protection. The nanocomposite exhibited low density, high compressive strength, and excellent heat insulation properties, making it suitable for thermal protection of reentry spacecraft and hypersonic vehicles.

COMPOSITES PART B-ENGINEERING (2022)

添加到收藏夹

Article Materials Science, Ceramics

Luminescence and structural evolution in ultra-low melting quaternary tin fluorophosphate glasses (NaF-SnF2-SnO-P2O5)

Chunlin Chen, Yiguang Jiang, Longfei Zhang, Feng Guan, Zaiyang Wang, Xin Huang, Huidan Zeng, Xinqiang Yuan, Long Zhang, Jin He

Summary: By systematically investigating the structure and luminescence evolution of Pb-free ultra-low melting quaternary tin fluorophosphate glasses with varied NaF content, this study successfully reduces the melting point and enhances the ionic character of the glass structure. Additionally, the presence of oxygen vacancies in the quaternary glass system affects the decay time and leads to potential applications in opto-electronics.

JOURNAL OF THE AMERICAN CERAMIC SOCIETY (2022)

添加到收藏夹

Article Materials Science, Ceramics

Spectral properties of ultra-low thermal expansion Er3+/Yb3+co-doped phosphate glasses

Yue Cheng, Chunlei Yu, Hehe Dong, Shikai Wang, Chongyun Shao, Yan Sun, Shiyu Sun, Yujing Shen, Jimeng Cheng, Lili Hu

Summary: An Er3+/Yb3+ co-doped phosphate glass with an ultra-low thermal expansion coefficient was developed. The EYAP5 glass exhibits excellent spectral properties, thermomechanical properties, and chemical durability. Compared with traditional high phosphorus-doped silica glasses, it achieves a higher Er3+/Yb3+ doping concentration and energy transfer efficiency.

CERAMICS INTERNATIONAL (2023)

添加到收藏夹

Article Materials Science, Multidisciplinary

Role of dysprosium on some acoustic and physical properties of PbO-B2O3-SiO2 glasses

M. S. Gaafar, S. Y. Marzouk, I. S. Mahmoud

Summary: The addition of neodymium oxide Dy2O3 was found to increase the rigidity and density of the glass system, extend the glass network, and decrease the average bond lengths of Pb-O and BO.

RESULTS IN PHYSICS (2021)

添加到收藏夹

暂无数据

Article Materials Science, Multidisciplinary

A hybrid dislocation deforming two welded anisotropic crystals

Nizar Lefi, Salem Neily, Roland Bonnet

Summary: This paper investigates the elastic field in a bi-material crystal with an angular dislocation line with one branch placed in the crystal and the other along a strongly bound or welded interface. The analysis formulates the elastic field of a closed dislocation loop and solves it using the knowledge of the Green's tensor of the bi-material. The study provides a faster calculation method and has important implications for solving interfacial angular dislocation problems.

PHILOSOPHICAL MAGAZINE (2024)

添加到收藏夹

© Peeref 2019-2024. All rights reserved.