{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T12:12:31Z","timestamp":1788351151196,"version":"build-2803163510"},"reference-count":35,"publisher":"American Chemical Society (ACS)","issue":"45","license":[{"start":{"date-parts":[[2020,10,27]],"date-time":"2020-10-27T00:00:00Z","timestamp":1603756800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/pubs.acs.org\/page\/policy\/authorchoice_termsofuse.html"}],"funder":[{"DOI":"10.13039\/100007224","name":"National Foundation for Science and Technology Development","doi-asserted-by":"publisher","award":["103.02-2018.312"],"award-info":[{"award-number":["103.02-2018.312"]}],"id":[{"id":"10.13039\/100007224","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,11,17]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>The domain structural transition and structural heterogeneity (SH) in GeO2 glass at 300 K and pressures up to 100 GPa are studied by means of molecular dynamics (MD) simulation. The results demonstrate that the structure of GeO2 glass comprises domain D4, domain D5, or domain D6, which depends strongly on pressure, where domain Dx (x = 4, 5, or 6) is a cluster of connected GeOx units, in which all Ge atoms possess the same coordination number of x. In the range of 9\u201318 GPa, GeO2 glass undergoes a structural transformation from domain D4 to domain D6 via domain D5. Under densification, structural evolution occurs along with the Oxx \u2192 Oxy atom variation, which comprises the processes of both merging and splitting of domain Dx and the exchange of domain-boundary (DB) atoms. The densification leads to a decrease of the Voronoi polygon (VP) volume of atoms. We found that the coexistence of separate domain structures is the origin of spatial SH in GeO2 glass. Pressure-dependent structural heterogeneity in GeO2 glass is also discussed in detail.<\/jats:p>","DOI":"10.1021\/acsomega.0c03722","type":"journal-article","created":{"date-parts":[[2020,10,27]],"date-time":"2020-10-27T02:15:01Z","timestamp":1603764901000},"page":"29092-29101","source":"Crossref","is-referenced-by-count":4,"title":["Domain Structural Transition and Structural Heterogeneity\nin GeO2 Glass Under Densification"],"prefix":"10.1021","volume":"5","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9530-9382","authenticated-orcid":true,"given":"LeTien","family":"Ha","sequence":"first","affiliation":[{"name":"Ton Duc Thang University , , ,","place":["Ho Chi Minh City, Vietnam"]},{"name":"Ton\u202fDuc Thang University , , ,","place":["Ho Chi Minh City, Vietnam"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1002-9678","authenticated-orcid":true,"given":"Pham Huu","family":"Kien","sequence":"additional","affiliation":[{"name":"Duy Tan University , , ,","place":["Da Nang, Vietnam, 550000"]},{"name":"Thai Nguyen University of Education , 20 Luong Ngoc Quyen , ,","place":["Thai Nguyen, Vietnam, 250000"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2020,10,27]]},"reference":[{"key":"2026090207124920200_cit1","doi-asserted-by":"publisher","first-page":"722","DOI":"10.1016\/j.jnoncrysol.2009.01.036","article-title":"High pressure effects\non liquid viscosity and glass\ntransition behaviour, polyamorphic phase transitions and structural\nproperties of glasses and liquids","volume":"355","author":"McMillan","year":"2009","journal-title":"J. Non-Cryst.\nSolids"},{"key":"2026090207124920200_cit2","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevX.9.011025","article-title":"Persistent Octahedral\nCoordination in Amorphous GeO2 Up to 100 GPa by K \u03b2\u2033\nX-Ray Emission Spectroscopy","volume":"9","author":"Spiekermann","year":"2019","journal-title":"Phys. Rev. X"},{"key":"2026090207124920200_cit3","doi-asserted-by":"publisher","DOI":"10.1088\/0953-8984\/20\/24\/244122","article-title":"Feasibility\nof in situ neutron diffraction studies of non-crystalline silicates\nup to pressures of 25 GPa","volume":"20","author":"Wilding","year":"2008","journal-title":"J. Phys.: Condens.\nMatter"},{"key":"2026090207124920200_cit4","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.43.2355","article-title":"Raman spectroscopic\nstudy of the pressure-induced coordination\nchange in GeO2 glass","volume":"43","author":"Durben","year":"1991","journal-title":"Phys. Rev.\nB"},{"key":"2026090207124920200_cit5","doi-asserted-by":"publisher","DOI":"10.1063\/1.4894103","article-title":"Polyhedral units\nand network connectivity in GeO2 glass at high pressure:\nAn X-ray total scattering investigation","volume":"105","author":"Hong","year":"2014","journal-title":"Appl.\nPhys. Lett."},{"key":"2026090207124920200_cit6","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.100.214104","article-title":"Density of amorphous\nGeO2 to 133 GPa with\npossible pyritelike structure and stiffness at high pressure","volume":"100","author":"Petitgirard","year":"2019","journal-title":"Phys. Rev. B"},{"key":"2026090207124920200_cit7","doi-asserted-by":"publisher","DOI":"10.1088\/0953-8984\/24\/41\/415102","article-title":"Density-driven\nstructural transformations in network\nforming glasses: a high-pressure neutron diffraction study of GeO2 glass up to 17.5 GPa","volume":"24","author":"Salmon","year":"2012","journal-title":"J. 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U.S.A."},{"key":"2026090207124920200_cit11","doi-asserted-by":"publisher","DOI":"10.1088\/0953-8984\/27\/13\/133201","article-title":"Networks under pressure: the development of in situ\nhigh-pressure neutron diffraction for glassy and liquid materials","volume":"27","author":"Salmon","year":"2015","journal-title":"J. Phys.: Condens. Matter"},{"key":"2026090207124920200_cit12","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.81.014202","article-title":"Structure of GeO2 glass at pressures up\nto 8.6 GPa","volume":"81","author":"Drewitt","year":"2010","journal-title":"Phys. Rev. B"},{"key":"2026090207124920200_cit13","doi-asserted-by":"publisher","first-page":"84","DOI":"10.1016\/0022-3093(94)90687-4","article-title":"Neutron\nscattering from vitreous silica. V. The structure of vitreous silica:\nWhat have we learned from 60 years of diffraction studies?","volume":"179","author":"Wright","year":"1994","journal-title":"J. Non-Cryst. 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