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Graphite thermal expansion coefficient measured by in-situ x-ray diffraction

Precision temperature measurement of a nano system with high sensitivity and fast response is still a challenge. The marvelous thermal and mechanical properties of graphite will allow the creation of superior nanoscale temperature sensors. In-situ x-ray diffraction was employed to determine the grap...

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Main Authors: Abdullah, M.A., Albarody, T.M.B., Hussein, A.R.
Format: Article
Published: Institute of Physics Publishing 2020
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85084694484&doi=10.1088%2f1361-6528%2fab8040&partnerID=40&md5=95ddecf869c0bfce91cdf72a836acd44
http://eprints.utp.edu.my/23122/
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spelling my.utp.eprints.231222021-08-19T05:36:06Z Graphite thermal expansion coefficient measured by in-situ x-ray diffraction Abdullah, M.A. Albarody, T.M.B. Hussein, A.R. Precision temperature measurement of a nano system with high sensitivity and fast response is still a challenge. The marvelous thermal and mechanical properties of graphite will allow the creation of superior nanoscale temperature sensors. In-situ x-ray diffraction was employed to determine the graphite hexagonal crystal lattice dimensions and the coefficient of thermal expansion based on the calculation of its interatomic distance. The energy of graphite was mapped over the first Brillouin zone in the temperature range of 50 °C-1200 °C at intervals of 50 °C. Energy-based comparative studies between the quantum free electron approach obtained by an inelastic scattering and an harmonic oscillator are introduced by the principal quantum number associated with the excitation level. The hexagonal lattice constants, interlayer distance and interatomic distance of graphite crystals are investigated analytically with consideration given to their temperature dependence and the carbon peak (002), where the 2θ value decreases slightly with increasing temperature. The coefficient of thermal expansion of graphite-based interatomic distance is negative and tends toward zero with increasing temperature, which is in very good agreement with experiments. Moreover, the energy probability distributions enclosed by reciprocal lattice vectors of the hexagonal lattice are defined and interpreted based on lattice dimensions with varying temperature. Linear changes of the temperature-driven unit cell lattice dimensions and analysis of the kinetic energy of the electron in graphite may both be utilised for the advanced temperature interpretation model and preliminary design of a precise nanothermometer. © 2020 IOP Publishing Ltd. Institute of Physics Publishing 2020 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85084694484&doi=10.1088%2f1361-6528%2fab8040&partnerID=40&md5=95ddecf869c0bfce91cdf72a836acd44 Abdullah, M.A. and Albarody, T.M.B. and Hussein, A.R. (2020) Graphite thermal expansion coefficient measured by in-situ x-ray diffraction. Nanotechnology, 31 (28). http://eprints.utp.edu.my/23122/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description Precision temperature measurement of a nano system with high sensitivity and fast response is still a challenge. The marvelous thermal and mechanical properties of graphite will allow the creation of superior nanoscale temperature sensors. In-situ x-ray diffraction was employed to determine the graphite hexagonal crystal lattice dimensions and the coefficient of thermal expansion based on the calculation of its interatomic distance. The energy of graphite was mapped over the first Brillouin zone in the temperature range of 50 °C-1200 °C at intervals of 50 °C. Energy-based comparative studies between the quantum free electron approach obtained by an inelastic scattering and an harmonic oscillator are introduced by the principal quantum number associated with the excitation level. The hexagonal lattice constants, interlayer distance and interatomic distance of graphite crystals are investigated analytically with consideration given to their temperature dependence and the carbon peak (002), where the 2θ value decreases slightly with increasing temperature. The coefficient of thermal expansion of graphite-based interatomic distance is negative and tends toward zero with increasing temperature, which is in very good agreement with experiments. Moreover, the energy probability distributions enclosed by reciprocal lattice vectors of the hexagonal lattice are defined and interpreted based on lattice dimensions with varying temperature. Linear changes of the temperature-driven unit cell lattice dimensions and analysis of the kinetic energy of the electron in graphite may both be utilised for the advanced temperature interpretation model and preliminary design of a precise nanothermometer. © 2020 IOP Publishing Ltd.
format Article
author Abdullah, M.A.
Albarody, T.M.B.
Hussein, A.R.
spellingShingle Abdullah, M.A.
Albarody, T.M.B.
Hussein, A.R.
Graphite thermal expansion coefficient measured by in-situ x-ray diffraction
author_facet Abdullah, M.A.
Albarody, T.M.B.
Hussein, A.R.
author_sort Abdullah, M.A.
title Graphite thermal expansion coefficient measured by in-situ x-ray diffraction
title_short Graphite thermal expansion coefficient measured by in-situ x-ray diffraction
title_full Graphite thermal expansion coefficient measured by in-situ x-ray diffraction
title_fullStr Graphite thermal expansion coefficient measured by in-situ x-ray diffraction
title_full_unstemmed Graphite thermal expansion coefficient measured by in-situ x-ray diffraction
title_sort graphite thermal expansion coefficient measured by in-situ x-ray diffraction
publisher Institute of Physics Publishing
publishDate 2020
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85084694484&doi=10.1088%2f1361-6528%2fab8040&partnerID=40&md5=95ddecf869c0bfce91cdf72a836acd44
http://eprints.utp.edu.my/23122/
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score 13.211869

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