Microscopic evidence of the connection between liquid-liquid transition and dynamical crossover in an ultraviscous metallic glass former
Liquid-liquid transitions are interesting to many researchers since they occur in systems as diverse as monoatomic liquids, multicomponent oxides, and metallic glass formers. In some cases, the crossover is accompanied by changes in the dynamical properties. By combining state-of-the-art synchrotron...
| Autores: | , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2018 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/127261 |
| Acceso en línea: | https://hdl.handle.net/2117/127261 https://dx.doi.org/10.1103/PhysRevMaterials.2.085603 |
| Access Level: | acceso abierto |
| Palabra clave: | Metallic glasses X-ray diffraction Liquid-Liquid Phase transition Disordered systems Calorimetry X-ray Diffraction Dynamic Mechanical analysis Vidres metàl·lics Raigs X -- Difracció Àrees temàtiques de la UPC::Enginyeria dels materials |
| id |
ES_bcac2af00ed4e53c7612e2dde7e70d03 |
|---|---|
| oai_identifier_str |
oai:upcommons.upc.edu:2117/127261 |
| network_acronym_str |
ES |
| network_name_str |
España |
| spelling |
Microscopic evidence of the connection between liquid-liquid transition and dynamical crossover in an ultraviscous metallic glass former Hechler, Simon Ruta, Beatrice Stolpe, Moritz Pineda Soler, Eloi|||0000-0002-1871-3848 Evenson, Zach Gross, Oliver Bernasconi, Andrea Busch, Ralf Gallino, Isabella Metallic glasses X-ray diffraction Liquid-Liquid Phase transition Disordered systems Calorimetry X-ray Diffraction Dynamic Mechanical analysis Vidres metàl·lics Raigs X -- Difracció Àrees temàtiques de la UPC::Enginyeria dels materials Liquid-liquid transitions are interesting to many researchers since they occur in systems as diverse as monoatomic liquids, multicomponent oxides, and metallic glass formers. In some cases, the crossover is accompanied by changes in the dynamical properties. By combining state-of-the-art synchrotron techniques, we followed the structure and atomic motion during quasistatic cooling of the Au49Cu26.9Si16.3Ag5.5Pd2.3 metallic glass former from the low-temperature supercooled liquid. With this thermal protocol, we were able to lower the glass transition temperature far enough to reveal a liquid-liquid crossover between two amorphous structures corresponding to two ultraviscous liquids with different kinetic behavior. This transition is in competition with vitrification, which occurs at conventional cooling rates, and is accompanied by structural changes not affecting the average density. Our results provide a direct connection between polyamorphism and dynamical crossover, and an alternative case to add to the highly debated topic on the low-temperature divergence of the dynamics in supercooled liquids. Peer Reviewed American Physical Society (APS) https://hdl.handle.net/2117/127261 https://dx.doi.org/10.1103/PhysRevMaterials.2.085603 |
| title |
Microscopic evidence of the connection between liquid-liquid transition and dynamical crossover in an ultraviscous metallic glass former |
| spellingShingle |
Microscopic evidence of the connection between liquid-liquid transition and dynamical crossover in an ultraviscous metallic glass former Hechler, Simon Metallic glasses X-ray diffraction Liquid-Liquid Phase transition Disordered systems Calorimetry X-ray Diffraction Dynamic Mechanical analysis Vidres metàl·lics Raigs X -- Difracció Àrees temàtiques de la UPC::Enginyeria dels materials |
| title_short |
Microscopic evidence of the connection between liquid-liquid transition and dynamical crossover in an ultraviscous metallic glass former |
| title_full |
Microscopic evidence of the connection between liquid-liquid transition and dynamical crossover in an ultraviscous metallic glass former |
| title_fullStr |
Microscopic evidence of the connection between liquid-liquid transition and dynamical crossover in an ultraviscous metallic glass former |
| title_full_unstemmed |
Microscopic evidence of the connection between liquid-liquid transition and dynamical crossover in an ultraviscous metallic glass former |
| title_sort |
Microscopic evidence of the connection between liquid-liquid transition and dynamical crossover in an ultraviscous metallic glass former |
| author |
Hechler, Simon |
| author_facet |
Hechler, Simon Ruta, Beatrice Stolpe, Moritz Pineda Soler, Eloi|||0000-0002-1871-3848 Evenson, Zach Gross, Oliver Bernasconi, Andrea Busch, Ralf Gallino, Isabella |
| author_role |
author |
| author2 |
Ruta, Beatrice Stolpe, Moritz Pineda Soler, Eloi|||0000-0002-1871-3848 Evenson, Zach Gross, Oliver Bernasconi, Andrea Busch, Ralf Gallino, Isabella |
| author2_role |
author author author author author author author author |
| topic |
Metallic glasses X-ray diffraction Liquid-Liquid Phase transition Disordered systems Calorimetry X-ray Diffraction Dynamic Mechanical analysis Vidres metàl·lics Raigs X -- Difracció Àrees temàtiques de la UPC::Enginyeria dels materials |
| topic_facet |
Metallic glasses X-ray diffraction Liquid-Liquid Phase transition Disordered systems Calorimetry X-ray Diffraction Dynamic Mechanical analysis Vidres metàl·lics Raigs X -- Difracció Àrees temàtiques de la UPC::Enginyeria dels materials |
| description |
Liquid-liquid transitions are interesting to many researchers since they occur in systems as diverse as monoatomic liquids, multicomponent oxides, and metallic glass formers. In some cases, the crossover is accompanied by changes in the dynamical properties. By combining state-of-the-art synchrotron techniques, we followed the structure and atomic motion during quasistatic cooling of the Au49Cu26.9Si16.3Ag5.5Pd2.3 metallic glass former from the low-temperature supercooled liquid. With this thermal protocol, we were able to lower the glass transition temperature far enough to reveal a liquid-liquid crossover between two amorphous structures corresponding to two ultraviscous liquids with different kinetic behavior. This transition is in competition with vitrification, which occurs at conventional cooling rates, and is accompanied by structural changes not affecting the average density. Our results provide a direct connection between polyamorphism and dynamical crossover, and an alternative case to add to the highly debated topic on the low-temperature divergence of the dynamics in supercooled liquids. |
| publishDate |
2018 |
| format |
article |
| url |
https://hdl.handle.net/2117/127261 https://dx.doi.org/10.1103/PhysRevMaterials.2.085603 |
| language |
eng |
| eu_rights_str_mv |
openAccess |
| publisher |
American Physical Society (APS) |
| institution |
Universitat Politècnica de Catalunya (UPC) |
| collection |
UPCommons. Portal del coneixement obert de la UPC |
| reponame_str |
UPCommons. Portal del coneixement obert de la UPC |
| instname_str |
Universitat Politècnica de Catalunya (UPC) |
| _version_ |
1878440053272739840 |
| publishDateSort |
2018 |
| author_browse |
Bernasconi, Andrea Busch, Ralf Evenson, Zach Gallino, Isabella Gross, Oliver Hechler, Simon Pineda Soler, Eloi|||0000-0002-1871-3848 Ruta, Beatrice Stolpe, Moritz |
| publisherStr |
American Physical Society (APS) |
| score |
6.9303427 |