Loading…
Diffusion-driven and size-dependent phase changes of gallium oxide nanocrystals in a glassy host
Phase transformations at the nanoscale represent a challenging field of research, mainly in the case of nanocrystals (NCs) in a solid host, with size-effects and interactions with the matrix. Here we report the study of the structural evolution of γ-Ga 2 O 3 NCs in alkali-germanosilicate glass - a t...
Saved in:
| Published in: | Physical chemistry chemical physics : PCCP 2015-01, Vol.17 (7), p.5141-515 |
|---|---|
| Main Authors: | , , , , , , , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Citations: | Items that this one cites Items that cite this one |
| Online Access: | Get full text |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| cited_by | cdi_FETCH-LOGICAL-c474t-1154bc87dcd7710f93a44665563ffaf50626103890e6c5b15322e4f745ffa6e33 |
|---|---|
| cites | cdi_FETCH-LOGICAL-c474t-1154bc87dcd7710f93a44665563ffaf50626103890e6c5b15322e4f745ffa6e33 |
| container_end_page | 515 |
| container_issue | 7 |
| container_start_page | 5141 |
| container_title | Physical chemistry chemical physics : PCCP |
| container_volume | 17 |
| creator | Golubev, N. V Ignat'eva, E. S Sigaev, V. N Lauria, A De Trizio, L Azarbod, A Paleari, A Lorenzi, R |
| description | Phase transformations at the nanoscale represent a challenging field of research, mainly in the case of nanocrystals (NCs) in a solid host, with size-effects and interactions with the matrix. Here we report the study of the structural evolution of γ-Ga
2
O
3
NCs in alkali-germanosilicate glass - a technologically relevant system for its light emission and UV-to-visible conversion - showing an evolution drastically different from the expected transformation of γ-Ga
2
O
3
into β-Ga
2
O
3
. Differential scanning calorimetry registers an irreversible endothermic process at ∼1300 K, well above the exothermic peak of γ-Ga
2
O
3
nano-crystallization (∼960 K) and below the melting temperature (∼1620 K). Transmission electron microscopy and X-ray diffraction data clarify that glass-embedded γ-Ga
2
O
3
NCs transform into LiGa
5
O
8
via
diffusion-driven kinetics of Li incorporation into NCs. At the endothermic peak, β-Ga
2
O
3
forms from LiGa
5
O
8
dissociation, following a nucleation-limited kinetics promoted by size-dependent order-disorder change between LiGa
5
O
8
polymorphs. As a result of the changes, modifications of UV-excited NC light emission are registered, with potential interest for applications.
We describe the evolution of γ-Ga
2
O
3
nanocrystals in alkali-germanosilicate glass, disclosing mechanisms of nanocrystal-matrix interaction
via
a diffusion-driven change, into LiGa
5
O
8
and β-Ga
2
O
3
formation by decomposition promoted by size-dependent order-disorder polymorphism. |
| doi_str_mv | 10.1039/c4cp05485g |
| format | article |
| fullrecord | <record><control><sourceid>proquest_pubme</sourceid><recordid>TN_cdi_proquest_miscellaneous_1652460305</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1652460305</sourcerecordid><originalsourceid>FETCH-LOGICAL-c474t-1154bc87dcd7710f93a44665563ffaf50626103890e6c5b15322e4f745ffa6e33</originalsourceid><addsrcrecordid>eNqN0UtLxDAUBeAgiu-NeyXuRKgmzaPtUsYnCLrQdc0kNzORTlp7W3H89VZHx524Ssj9OJBzCdnj7IQzUZxaaRumZK4mK2STSy2SguVydXnP9AbZQnxmjHHFxTrZSJUqCq34Jnk6D973GOqYuDa8QqQmOorhHRIHDUQHsaPN1CBQOzVxAkhrTyemqkI_o_VbcECjibVt59iZCmkYEuikMohzOq2x2yFrfniH3e9zmzxeXjyMrpPbu6ub0dltYmUmu4RzJcc2z5x1WcaZL4SRUmultPDeeMV0qofP5gUDbdWYK5GmIH0m1TDWIMQ2OVrkNm390gN25SyghaoyEeoeS651kReZ0vwfVKVSM8HUQI8X1LY1Ygu-bNowM-285Kz8LL8cydH9V_lXAz74zu3HM3BL-tP2AA4XoEW7nP5ur2ycH8z-X0Z8AA1nlCc</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1652460305</pqid></control><display><type>article</type><title>Diffusion-driven and size-dependent phase changes of gallium oxide nanocrystals in a glassy host</title><source>Royal Society of Chemistry:Jisc Collections:Royal Society of Chemistry Read and Publish 2022-2024 (reading list)</source><creator>Golubev, N. V ; Ignat'eva, E. S ; Sigaev, V. N ; Lauria, A ; De Trizio, L ; Azarbod, A ; Paleari, A ; Lorenzi, R</creator><creatorcontrib>Golubev, N. V ; Ignat'eva, E. S ; Sigaev, V. N ; Lauria, A ; De Trizio, L ; Azarbod, A ; Paleari, A ; Lorenzi, R</creatorcontrib><description>Phase transformations at the nanoscale represent a challenging field of research, mainly in the case of nanocrystals (NCs) in a solid host, with size-effects and interactions with the matrix. Here we report the study of the structural evolution of γ-Ga
2
O
3
NCs in alkali-germanosilicate glass - a technologically relevant system for its light emission and UV-to-visible conversion - showing an evolution drastically different from the expected transformation of γ-Ga
2
O
3
into β-Ga
2
O
3
. Differential scanning calorimetry registers an irreversible endothermic process at ∼1300 K, well above the exothermic peak of γ-Ga
2
O
3
nano-crystallization (∼960 K) and below the melting temperature (∼1620 K). Transmission electron microscopy and X-ray diffraction data clarify that glass-embedded γ-Ga
2
O
3
NCs transform into LiGa
5
O
8
via
diffusion-driven kinetics of Li incorporation into NCs. At the endothermic peak, β-Ga
2
O
3
forms from LiGa
5
O
8
dissociation, following a nucleation-limited kinetics promoted by size-dependent order-disorder change between LiGa
5
O
8
polymorphs. As a result of the changes, modifications of UV-excited NC light emission are registered, with potential interest for applications.
We describe the evolution of γ-Ga
2
O
3
nanocrystals in alkali-germanosilicate glass, disclosing mechanisms of nanocrystal-matrix interaction
via
a diffusion-driven change, into LiGa
5
O
8
and β-Ga
2
O
3
formation by decomposition promoted by size-dependent order-disorder polymorphism.</description><identifier>ISSN: 1463-9076</identifier><identifier>EISSN: 1463-9084</identifier><identifier>DOI: 10.1039/c4cp05485g</identifier><identifier>PMID: 25599651</identifier><language>eng</language><publisher>England</publisher><subject>Endothermic reactions ; Evolution ; Light emission ; Lithium ; Nanocrystals ; Nanostructure ; Order disorder ; Phase transformations ; Transformations</subject><ispartof>Physical chemistry chemical physics : PCCP, 2015-01, Vol.17 (7), p.5141-515</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c474t-1154bc87dcd7710f93a44665563ffaf50626103890e6c5b15322e4f745ffa6e33</citedby><cites>FETCH-LOGICAL-c474t-1154bc87dcd7710f93a44665563ffaf50626103890e6c5b15322e4f745ffa6e33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/25599651$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Golubev, N. V</creatorcontrib><creatorcontrib>Ignat'eva, E. S</creatorcontrib><creatorcontrib>Sigaev, V. N</creatorcontrib><creatorcontrib>Lauria, A</creatorcontrib><creatorcontrib>De Trizio, L</creatorcontrib><creatorcontrib>Azarbod, A</creatorcontrib><creatorcontrib>Paleari, A</creatorcontrib><creatorcontrib>Lorenzi, R</creatorcontrib><title>Diffusion-driven and size-dependent phase changes of gallium oxide nanocrystals in a glassy host</title><title>Physical chemistry chemical physics : PCCP</title><addtitle>Phys Chem Chem Phys</addtitle><description>Phase transformations at the nanoscale represent a challenging field of research, mainly in the case of nanocrystals (NCs) in a solid host, with size-effects and interactions with the matrix. Here we report the study of the structural evolution of γ-Ga
2
O
3
NCs in alkali-germanosilicate glass - a technologically relevant system for its light emission and UV-to-visible conversion - showing an evolution drastically different from the expected transformation of γ-Ga
2
O
3
into β-Ga
2
O
3
. Differential scanning calorimetry registers an irreversible endothermic process at ∼1300 K, well above the exothermic peak of γ-Ga
2
O
3
nano-crystallization (∼960 K) and below the melting temperature (∼1620 K). Transmission electron microscopy and X-ray diffraction data clarify that glass-embedded γ-Ga
2
O
3
NCs transform into LiGa
5
O
8
via
diffusion-driven kinetics of Li incorporation into NCs. At the endothermic peak, β-Ga
2
O
3
forms from LiGa
5
O
8
dissociation, following a nucleation-limited kinetics promoted by size-dependent order-disorder change between LiGa
5
O
8
polymorphs. As a result of the changes, modifications of UV-excited NC light emission are registered, with potential interest for applications.
We describe the evolution of γ-Ga
2
O
3
nanocrystals in alkali-germanosilicate glass, disclosing mechanisms of nanocrystal-matrix interaction
via
a diffusion-driven change, into LiGa
5
O
8
and β-Ga
2
O
3
formation by decomposition promoted by size-dependent order-disorder polymorphism.</description><subject>Endothermic reactions</subject><subject>Evolution</subject><subject>Light emission</subject><subject>Lithium</subject><subject>Nanocrystals</subject><subject>Nanostructure</subject><subject>Order disorder</subject><subject>Phase transformations</subject><subject>Transformations</subject><issn>1463-9076</issn><issn>1463-9084</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqN0UtLxDAUBeAgiu-NeyXuRKgmzaPtUsYnCLrQdc0kNzORTlp7W3H89VZHx524Ssj9OJBzCdnj7IQzUZxaaRumZK4mK2STSy2SguVydXnP9AbZQnxmjHHFxTrZSJUqCq34Jnk6D973GOqYuDa8QqQmOorhHRIHDUQHsaPN1CBQOzVxAkhrTyemqkI_o_VbcECjibVt59iZCmkYEuikMohzOq2x2yFrfniH3e9zmzxeXjyMrpPbu6ub0dltYmUmu4RzJcc2z5x1WcaZL4SRUmultPDeeMV0qofP5gUDbdWYK5GmIH0m1TDWIMQ2OVrkNm390gN25SyghaoyEeoeS651kReZ0vwfVKVSM8HUQI8X1LY1Ygu-bNowM-285Kz8LL8cydH9V_lXAz74zu3HM3BL-tP2AA4XoEW7nP5ur2ycH8z-X0Z8AA1nlCc</recordid><startdate>20150101</startdate><enddate>20150101</enddate><creator>Golubev, N. V</creator><creator>Ignat'eva, E. S</creator><creator>Sigaev, V. N</creator><creator>Lauria, A</creator><creator>De Trizio, L</creator><creator>Azarbod, A</creator><creator>Paleari, A</creator><creator>Lorenzi, R</creator><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20150101</creationdate><title>Diffusion-driven and size-dependent phase changes of gallium oxide nanocrystals in a glassy host</title><author>Golubev, N. V ; Ignat'eva, E. S ; Sigaev, V. N ; Lauria, A ; De Trizio, L ; Azarbod, A ; Paleari, A ; Lorenzi, R</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c474t-1154bc87dcd7710f93a44665563ffaf50626103890e6c5b15322e4f745ffa6e33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Endothermic reactions</topic><topic>Evolution</topic><topic>Light emission</topic><topic>Lithium</topic><topic>Nanocrystals</topic><topic>Nanostructure</topic><topic>Order disorder</topic><topic>Phase transformations</topic><topic>Transformations</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Golubev, N. V</creatorcontrib><creatorcontrib>Ignat'eva, E. S</creatorcontrib><creatorcontrib>Sigaev, V. N</creatorcontrib><creatorcontrib>Lauria, A</creatorcontrib><creatorcontrib>De Trizio, L</creatorcontrib><creatorcontrib>Azarbod, A</creatorcontrib><creatorcontrib>Paleari, A</creatorcontrib><creatorcontrib>Lorenzi, R</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physical chemistry chemical physics : PCCP</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Golubev, N. V</au><au>Ignat'eva, E. S</au><au>Sigaev, V. N</au><au>Lauria, A</au><au>De Trizio, L</au><au>Azarbod, A</au><au>Paleari, A</au><au>Lorenzi, R</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Diffusion-driven and size-dependent phase changes of gallium oxide nanocrystals in a glassy host</atitle><jtitle>Physical chemistry chemical physics : PCCP</jtitle><addtitle>Phys Chem Chem Phys</addtitle><date>2015-01-01</date><risdate>2015</risdate><volume>17</volume><issue>7</issue><spage>5141</spage><epage>515</epage><pages>5141-515</pages><issn>1463-9076</issn><eissn>1463-9084</eissn><abstract>Phase transformations at the nanoscale represent a challenging field of research, mainly in the case of nanocrystals (NCs) in a solid host, with size-effects and interactions with the matrix. Here we report the study of the structural evolution of γ-Ga
2
O
3
NCs in alkali-germanosilicate glass - a technologically relevant system for its light emission and UV-to-visible conversion - showing an evolution drastically different from the expected transformation of γ-Ga
2
O
3
into β-Ga
2
O
3
. Differential scanning calorimetry registers an irreversible endothermic process at ∼1300 K, well above the exothermic peak of γ-Ga
2
O
3
nano-crystallization (∼960 K) and below the melting temperature (∼1620 K). Transmission electron microscopy and X-ray diffraction data clarify that glass-embedded γ-Ga
2
O
3
NCs transform into LiGa
5
O
8
via
diffusion-driven kinetics of Li incorporation into NCs. At the endothermic peak, β-Ga
2
O
3
forms from LiGa
5
O
8
dissociation, following a nucleation-limited kinetics promoted by size-dependent order-disorder change between LiGa
5
O
8
polymorphs. As a result of the changes, modifications of UV-excited NC light emission are registered, with potential interest for applications.
We describe the evolution of γ-Ga
2
O
3
nanocrystals in alkali-germanosilicate glass, disclosing mechanisms of nanocrystal-matrix interaction
via
a diffusion-driven change, into LiGa
5
O
8
and β-Ga
2
O
3
formation by decomposition promoted by size-dependent order-disorder polymorphism.</abstract><cop>England</cop><pmid>25599651</pmid><doi>10.1039/c4cp05485g</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1463-9076 |
| ispartof | Physical chemistry chemical physics : PCCP, 2015-01, Vol.17 (7), p.5141-515 |
| issn | 1463-9076 1463-9084 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1652460305 |
| source | Royal Society of Chemistry:Jisc Collections:Royal Society of Chemistry Read and Publish 2022-2024 (reading list) |
| subjects | Endothermic reactions Evolution Light emission Lithium Nanocrystals Nanostructure Order disorder Phase transformations Transformations |
| title | Diffusion-driven and size-dependent phase changes of gallium oxide nanocrystals in a glassy host |
| url | http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-08T08%3A02%3A55IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_pubme&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Diffusion-driven%20and%20size-dependent%20phase%20changes%20of%20gallium%20oxide%20nanocrystals%20in%20a%20glassy%20host&rft.jtitle=Physical%20chemistry%20chemical%20physics%20:%20PCCP&rft.au=Golubev,%20N.%20V&rft.date=2015-01-01&rft.volume=17&rft.issue=7&rft.spage=5141&rft.epage=515&rft.pages=5141-515&rft.issn=1463-9076&rft.eissn=1463-9084&rft_id=info:doi/10.1039/c4cp05485g&rft_dat=%3Cproquest_pubme%3E1652460305%3C/proquest_pubme%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-c474t-1154bc87dcd7710f93a44665563ffaf50626103890e6c5b15322e4f745ffa6e33%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_pqid=1652460305&rft_id=info:pmid/25599651&rfr_iscdi=true |