Grain size dependent high-pressure elastic properties of ultrafine micro/nanocrystalline grossular

Abstract We have performed sound velocity and unit cell volume measurements of three synthetic, ultrafine micro/nanocrystalline grossular samples up to 50 GPa using Brillouin spectroscopy and synchrotron X-ray diffraction. The samples are characterized by average grain sizes of 90 nm, 93 nm and 179 ...

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Autores principales:	Jin S. Zhang, T. Irifune, M. Hao, D. Zhang, Y. Hu, S. Tkachev, P. Dera, J. Chen, Ying-Bing Jiang, Adrian J. Brearley, J. D. Bass, V. Prakapenka
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e24c08dd1d5c4c97bf41a30a3aa845a3
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spelling	oai:doaj.org-article:e24c08dd1d5c4c97bf41a30a3aa845a32021-11-21T12:18:33ZGrain size dependent high-pressure elastic properties of ultrafine micro/nanocrystalline grossular10.1038/s41598-021-01960-62045-2322https://doaj.org/article/e24c08dd1d5c4c97bf41a30a3aa845a32021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01960-6https://doaj.org/toc/2045-2322Abstract We have performed sound velocity and unit cell volume measurements of three synthetic, ultrafine micro/nanocrystalline grossular samples up to 50 GPa using Brillouin spectroscopy and synchrotron X-ray diffraction. The samples are characterized by average grain sizes of 90 nm, 93 nm and 179 nm (hereinafter referred to as samples Gr90, Gr93, and Gr179, respectively). The experimentally determined sound velocities and elastic properties of Gr179 sample are comparable with previous measurements, but slightly higher than those of Gr90 and Gr93 under ambient conditions. However, the differences diminish with increasing pressure, and the velocity crossover eventually takes place at approximately 20–30 GPa. The X-ray diffraction peaks of the ultrafine micro/nanocrystalline grossular samples significantly broaden between 15–40 GPa, especially for Gr179. The velocity or elasticity crossover observed at pressures over 30 GPa might be explained by different grain size reduction and/or inhomogeneous strain within the individual grains for the three grossular samples, which is supported by both the pressure-induced peak broadening observed in the X-ray diffraction experiments and transmission electron microscopy observations. The elastic behavior of ultrafine micro/nanocrystalline silicates, in this case, grossular, is both grain size and pressure dependent.Jin S. ZhangT. IrifuneM. HaoD. ZhangY. HuS. TkachevP. DeraJ. ChenYing-Bing JiangAdrian J. BrearleyJ. D. BassV. PrakapenkaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jin S. Zhang T. Irifune M. Hao D. Zhang Y. Hu S. Tkachev P. Dera J. Chen Ying-Bing Jiang Adrian J. Brearley J. D. Bass V. Prakapenka Grain size dependent high-pressure elastic properties of ultrafine micro/nanocrystalline grossular
description	Abstract We have performed sound velocity and unit cell volume measurements of three synthetic, ultrafine micro/nanocrystalline grossular samples up to 50 GPa using Brillouin spectroscopy and synchrotron X-ray diffraction. The samples are characterized by average grain sizes of 90 nm, 93 nm and 179 nm (hereinafter referred to as samples Gr90, Gr93, and Gr179, respectively). The experimentally determined sound velocities and elastic properties of Gr179 sample are comparable with previous measurements, but slightly higher than those of Gr90 and Gr93 under ambient conditions. However, the differences diminish with increasing pressure, and the velocity crossover eventually takes place at approximately 20–30 GPa. The X-ray diffraction peaks of the ultrafine micro/nanocrystalline grossular samples significantly broaden between 15–40 GPa, especially for Gr179. The velocity or elasticity crossover observed at pressures over 30 GPa might be explained by different grain size reduction and/or inhomogeneous strain within the individual grains for the three grossular samples, which is supported by both the pressure-induced peak broadening observed in the X-ray diffraction experiments and transmission electron microscopy observations. The elastic behavior of ultrafine micro/nanocrystalline silicates, in this case, grossular, is both grain size and pressure dependent.
format	article
author	Jin S. Zhang T. Irifune M. Hao D. Zhang Y. Hu S. Tkachev P. Dera J. Chen Ying-Bing Jiang Adrian J. Brearley J. D. Bass V. Prakapenka
author_facet	Jin S. Zhang T. Irifune M. Hao D. Zhang Y. Hu S. Tkachev P. Dera J. Chen Ying-Bing Jiang Adrian J. Brearley J. D. Bass V. Prakapenka
author_sort	Jin S. Zhang
title	Grain size dependent high-pressure elastic properties of ultrafine micro/nanocrystalline grossular
title_short	Grain size dependent high-pressure elastic properties of ultrafine micro/nanocrystalline grossular
title_full	Grain size dependent high-pressure elastic properties of ultrafine micro/nanocrystalline grossular
title_fullStr	Grain size dependent high-pressure elastic properties of ultrafine micro/nanocrystalline grossular
title_full_unstemmed	Grain size dependent high-pressure elastic properties of ultrafine micro/nanocrystalline grossular
title_sort	grain size dependent high-pressure elastic properties of ultrafine micro/nanocrystalline grossular
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e24c08dd1d5c4c97bf41a30a3aa845a3
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Grain size dependent high-pressure elastic properties of ultrafine micro/nanocrystalline grossular

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