Phase transition lowering in dynamically compressed silicon

Silicon, being one of the most abundant elements in nature, attracts wide-ranging scientific and technological interest. Specifically, in its elemental form, crystals of remarkable purity can be produced. One may assume that this would lead to silicon being well understood, and indeed, this is the c...

সম্পূর্ণ বিবরণ

গ্রন্থ-পঞ্জীর বিবরন
প্রধান লেখক: McBride, E, Krygier, A, Ehnes, A, Galtier, E, Harmand, M, Konôpková, Z, Lee, H, Liermann, H, Nagler, B, Pelka, A, Rödel, M, Schropp, A, Smith, R, Spindloe, C, Swift, D, Tavella, F, Toleikis, S, Tschentscher, T, Wark, J, Higginbotham, A
বিন্যাস: Journal article
প্রকাশিত: Springer Nature 2018
_version_ 1826301082771390464
author McBride, E
Krygier, A
Ehnes, A
Galtier, E
Harmand, M
Konôpková, Z
Lee, H
Liermann, H
Nagler, B
Pelka, A
Rödel, M
Schropp, A
Smith, R
Spindloe, C
Swift, D
Tavella, F
Toleikis, S
Tschentscher, T
Wark, J
Higginbotham, A
author_facet McBride, E
Krygier, A
Ehnes, A
Galtier, E
Harmand, M
Konôpková, Z
Lee, H
Liermann, H
Nagler, B
Pelka, A
Rödel, M
Schropp, A
Smith, R
Spindloe, C
Swift, D
Tavella, F
Toleikis, S
Tschentscher, T
Wark, J
Higginbotham, A
author_sort McBride, E
collection OXFORD
description Silicon, being one of the most abundant elements in nature, attracts wide-ranging scientific and technological interest. Specifically, in its elemental form, crystals of remarkable purity can be produced. One may assume that this would lead to silicon being well understood, and indeed, this is the case for many ambient properties, as well as for higher-pressure behaviour under quasi-static loading. However, despite many decades of study, a detailed understanding of the response of silicon to rapid compression—such as that experienced under shock impact—remains elusive. Here, we combine a novel free-electron laser-based X-ray diffraction geometry with laser-driven compression to elucidate the importance of shear generated during shock compression on the occurrence of phase transitions. We observe lowering of the hydrostatic phase boundary in elemental silicon, an ideal model system for investigating high-strength materials, analogous to planetary constituents. Moreover, we unambiguously determine the onset of melting above 14 GPa, previously ascribed to a solid–solid phase transition, undetectable in the now conventional shocked diffraction geometry; transitions to the liquid state are expected to be ubiquitous in all systems at sufficiently high pressures and temperatures.
first_indexed 2024-03-07T05:26:59Z
format Journal article
id oxford-uuid:e0e82dbc-1f8b-4c3e-bfc5-b3b8613e1b21
institution University of Oxford
last_indexed 2024-03-07T05:26:59Z
publishDate 2018
publisher Springer Nature
record_format dspace
spelling oxford-uuid:e0e82dbc-1f8b-4c3e-bfc5-b3b8613e1b212022-03-27T09:50:43ZPhase transition lowering in dynamically compressed siliconJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e0e82dbc-1f8b-4c3e-bfc5-b3b8613e1b21Symplectic Elements at OxfordSpringer Nature2018McBride, EKrygier, AEhnes, AGaltier, EHarmand, MKonôpková, ZLee, HLiermann, HNagler, BPelka, ARödel, MSchropp, ASmith, RSpindloe, CSwift, DTavella, FToleikis, STschentscher, TWark, JHigginbotham, ASilicon, being one of the most abundant elements in nature, attracts wide-ranging scientific and technological interest. Specifically, in its elemental form, crystals of remarkable purity can be produced. One may assume that this would lead to silicon being well understood, and indeed, this is the case for many ambient properties, as well as for higher-pressure behaviour under quasi-static loading. However, despite many decades of study, a detailed understanding of the response of silicon to rapid compression—such as that experienced under shock impact—remains elusive. Here, we combine a novel free-electron laser-based X-ray diffraction geometry with laser-driven compression to elucidate the importance of shear generated during shock compression on the occurrence of phase transitions. We observe lowering of the hydrostatic phase boundary in elemental silicon, an ideal model system for investigating high-strength materials, analogous to planetary constituents. Moreover, we unambiguously determine the onset of melting above 14 GPa, previously ascribed to a solid–solid phase transition, undetectable in the now conventional shocked diffraction geometry; transitions to the liquid state are expected to be ubiquitous in all systems at sufficiently high pressures and temperatures.
spellingShingle McBride, E
Krygier, A
Ehnes, A
Galtier, E
Harmand, M
Konôpková, Z
Lee, H
Liermann, H
Nagler, B
Pelka, A
Rödel, M
Schropp, A
Smith, R
Spindloe, C
Swift, D
Tavella, F
Toleikis, S
Tschentscher, T
Wark, J
Higginbotham, A
Phase transition lowering in dynamically compressed silicon
title Phase transition lowering in dynamically compressed silicon
title_full Phase transition lowering in dynamically compressed silicon
title_fullStr Phase transition lowering in dynamically compressed silicon
title_full_unstemmed Phase transition lowering in dynamically compressed silicon
title_short Phase transition lowering in dynamically compressed silicon
title_sort phase transition lowering in dynamically compressed silicon
work_keys_str_mv AT mcbridee phasetransitionloweringindynamicallycompressedsilicon
AT krygiera phasetransitionloweringindynamicallycompressedsilicon
AT ehnesa phasetransitionloweringindynamicallycompressedsilicon
AT galtiere phasetransitionloweringindynamicallycompressedsilicon
AT harmandm phasetransitionloweringindynamicallycompressedsilicon
AT konopkovaz phasetransitionloweringindynamicallycompressedsilicon
AT leeh phasetransitionloweringindynamicallycompressedsilicon
AT liermannh phasetransitionloweringindynamicallycompressedsilicon
AT naglerb phasetransitionloweringindynamicallycompressedsilicon
AT pelkaa phasetransitionloweringindynamicallycompressedsilicon
AT rodelm phasetransitionloweringindynamicallycompressedsilicon
AT schroppa phasetransitionloweringindynamicallycompressedsilicon
AT smithr phasetransitionloweringindynamicallycompressedsilicon
AT spindloec phasetransitionloweringindynamicallycompressedsilicon
AT swiftd phasetransitionloweringindynamicallycompressedsilicon
AT tavellaf phasetransitionloweringindynamicallycompressedsilicon
AT toleikiss phasetransitionloweringindynamicallycompressedsilicon
AT tschentschert phasetransitionloweringindynamicallycompressedsilicon
AT warkj phasetransitionloweringindynamicallycompressedsilicon
AT higginbothama phasetransitionloweringindynamicallycompressedsilicon