First-principles calculations on the mechanical, electronic and thermodynamic properties of t-C88 carbon allotrope under high pressure

IF 2.8 3区 物理与天体物理 Q2 PHYSICS, CONDENSED MATTER
P. Arjun , V. Nagarajan , R. Chandiramouli
{"title":"First-principles calculations on the mechanical, electronic and thermodynamic properties of t-C88 carbon allotrope under high pressure","authors":"P. Arjun ,&nbsp;V. Nagarajan ,&nbsp;R. Chandiramouli","doi":"10.1016/j.physb.2024.416748","DOIUrl":null,"url":null,"abstract":"<div><div>The new tetragonal carbon allotrope t-C<sub>88</sub>, which is the subject of this work, is distinguished by its distinct mechanical performance at high pressure and structural characteristics. t-C<sub>88</sub> shows hybridization of <em>sp</em><sup><em>2</em></sup> and <em>sp</em><sup><em>3</em></sup> carbon atoms, in contrast to other carbon compounds that are mostly made of <em>sp</em><sup><em>2</em></sup>-hybridized carbon atoms. We investigated the elastic characteristics and anisotropy of t-C<sub>88</sub> at different pressures (0–20 GPa) using first-principles computations. Our results show that t-C<sub>88</sub> exhibits strong elastic anisotropy, especially above 15 GPa, and retains mechanical stability by meeting Born-Huang requirements. In order to emphasize the material's reaction to high pressure, this study offers a wealth of information on the following criteria: Poisson's ratio (v), bulk modulus (B), shear modulus (G), Young's modulus (E), elastic constants (Cij), and universal anisotropy (A<sup>U</sup>). Interestingly, t-C<sub>88</sub> shows more resistance to compressional deformation than shear deformation. The high B/G ratio of t-C<sub>88</sub> indicates that its mechanical characteristics indicate that it will become ductile with increasing pressure. Moreover, the understanding of t-C<sub>88</sub> under high-pressure conditions will open viable options for various applications, including high-performance composites for enhanced strength and durability, protective coatings requiring superior mechanical stability, advanced sensors due to its tuneable electronic properties, energy storage devices leveraging its unique characteristics, and electronic components.</div></div>","PeriodicalId":20116,"journal":{"name":"Physica B-condensed Matter","volume":"698 ","pages":"Article 416748"},"PeriodicalIF":2.8000,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physica B-condensed Matter","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921452624010895","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
引用次数: 0

Abstract

The new tetragonal carbon allotrope t-C88, which is the subject of this work, is distinguished by its distinct mechanical performance at high pressure and structural characteristics. t-C88 shows hybridization of sp2 and sp3 carbon atoms, in contrast to other carbon compounds that are mostly made of sp2-hybridized carbon atoms. We investigated the elastic characteristics and anisotropy of t-C88 at different pressures (0–20 GPa) using first-principles computations. Our results show that t-C88 exhibits strong elastic anisotropy, especially above 15 GPa, and retains mechanical stability by meeting Born-Huang requirements. In order to emphasize the material's reaction to high pressure, this study offers a wealth of information on the following criteria: Poisson's ratio (v), bulk modulus (B), shear modulus (G), Young's modulus (E), elastic constants (Cij), and universal anisotropy (AU). Interestingly, t-C88 shows more resistance to compressional deformation than shear deformation. The high B/G ratio of t-C88 indicates that its mechanical characteristics indicate that it will become ductile with increasing pressure. Moreover, the understanding of t-C88 under high-pressure conditions will open viable options for various applications, including high-performance composites for enhanced strength and durability, protective coatings requiring superior mechanical stability, advanced sensors due to its tuneable electronic properties, energy storage devices leveraging its unique characteristics, and electronic components.

Abstract Image

高压下t-C88碳同素异形体力学、电子和热力学性质的第一性原理计算
新型的四方碳同素异形体t-C88,是本工作的主题,以其独特的高压机械性能和结构特点而著称。t-C88表现出sp2和sp3碳原子的杂化,而其他碳化合物主要由sp2杂化碳原子组成。利用第一性原理计算研究了t-C88在不同压力(0-20 GPa)下的弹性特性和各向异性。结果表明,t-C88表现出较强的弹性各向异性,特别是在15 GPa以上,并保持了Born-Huang要求的机械稳定性。为了强调材料对高压的反应,本研究提供了以下标准的丰富信息:泊松比(v)、体模量(B)、剪切模量(G)、杨氏模量(E)、弹性常数(Cij)和通用各向异性(AU)。有趣的是,t-C88对压缩变形的抵抗比剪切变形更强。t-C88的高B/G比表明其力学特性表明,随着压力的增加,它将变得具有延性。此外,对高压条件下t-C88的了解将为各种应用提供可行的选择,包括增强强度和耐久性的高性能复合材料,需要卓越机械稳定性的保护涂层,由于其可调谐电子特性而产生的先进传感器,利用其独特特性的能量存储设备和电子元件。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Physica B-condensed Matter
Physica B-condensed Matter 物理-物理:凝聚态物理
CiteScore
4.90
自引率
7.10%
发文量
703
审稿时长
44 days
期刊介绍: Physica B: Condensed Matter comprises all condensed matter and material physics that involve theoretical, computational and experimental work. Papers should contain further developments and a proper discussion on the physics of experimental or theoretical results in one of the following areas: -Magnetism -Materials physics -Nanostructures and nanomaterials -Optics and optical materials -Quantum materials -Semiconductors -Strongly correlated systems -Superconductivity -Surfaces and interfaces
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信