Theoretical model for the high-pressure melting process of MgO with the B1 structure

MgO is an abundant mineral in the rocky mantle of terrestrial planets, but its melting behaviors remain enigmatic. Here we introduce a simple theoretical model to investigate the B1-liquid transition of MgO up to 370 GPa. Vibrational free energies of B1-MgO are fully computed by the moment recurrenc...

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Main Authors: Tran Dinh Cuong, Anh D.Phan
Format: Bài trích
Language:eng
Published: Vacuum 2021
Subjects:
Online Access:https://www.sciencedirect.com/science/article/abs/pii/S0042207X2100186X?via%3Dihub
https://dlib.phenikaa-uni.edu.vn/handle/PNK/2828
https://doi.org/10.1016/j.vacuum.2021.110231
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spelling oai:localhost:PNK-28282022-08-17T05:54:37Z Theoretical model for the high-pressure melting process of MgO with the B1 structure Tran Dinh Cuong Anh D.Phan Melting behavior Bulk modulus High pressure MgO is an abundant mineral in the rocky mantle of terrestrial planets, but its melting behaviors remain enigmatic. Here we introduce a simple theoretical model to investigate the B1-liquid transition of MgO up to 370 GPa. Vibrational free energies of B1-MgO are fully computed by the moment recurrence technique in quantum statistical physics. On that basis, we associate the melting temperature with the isothermal bulk modulus via the work-heat equivalence principle. This strategy allows us to quantitatively explain recent experimental data. Our numerical analyses would yield insights into planetary dynamics and evolution. 2021-09-13T04:24:48Z 2021-09-13T04:24:48Z 2021 Bài trích https://www.sciencedirect.com/science/article/abs/pii/S0042207X2100186X?via%3Dihub https://dlib.phenikaa-uni.edu.vn/handle/PNK/2828 https://doi.org/10.1016/j.vacuum.2021.110231 eng Vacuum
institution Digital Phenikaa
collection Digital Phenikaa
language eng
topic Melting behavior
Bulk modulus
High pressure
spellingShingle Melting behavior
Bulk modulus
High pressure
Tran Dinh Cuong
Anh D.Phan
Theoretical model for the high-pressure melting process of MgO with the B1 structure
description MgO is an abundant mineral in the rocky mantle of terrestrial planets, but its melting behaviors remain enigmatic. Here we introduce a simple theoretical model to investigate the B1-liquid transition of MgO up to 370 GPa. Vibrational free energies of B1-MgO are fully computed by the moment recurrence technique in quantum statistical physics. On that basis, we associate the melting temperature with the isothermal bulk modulus via the work-heat equivalence principle. This strategy allows us to quantitatively explain recent experimental data. Our numerical analyses would yield insights into planetary dynamics and evolution.
format Bài trích
author Tran Dinh Cuong
Anh D.Phan
author_facet Tran Dinh Cuong
Anh D.Phan
author_sort Tran Dinh Cuong
title Theoretical model for the high-pressure melting process of MgO with the B1 structure
title_short Theoretical model for the high-pressure melting process of MgO with the B1 structure
title_full Theoretical model for the high-pressure melting process of MgO with the B1 structure
title_fullStr Theoretical model for the high-pressure melting process of MgO with the B1 structure
title_full_unstemmed Theoretical model for the high-pressure melting process of MgO with the B1 structure
title_sort theoretical model for the high-pressure melting process of mgo with the b1 structure
publisher Vacuum
publishDate 2021
url https://www.sciencedirect.com/science/article/abs/pii/S0042207X2100186X?via%3Dihub
https://dlib.phenikaa-uni.edu.vn/handle/PNK/2828
https://doi.org/10.1016/j.vacuum.2021.110231
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