Structural relaxation of glassy GeSe2 during isothermal annealing below and above Tg
Raman scattering, X-ray diffraction, and differential scanning calorimetry in the temperature range 300–800 K are used to show that, upon isothermal annealing of glass GeSe 2 powders below the glass-softening temperature ( T g = 635 ± 2 K), fragments of high-temperature polymorphic modifications hav...
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| Veröffentlicht in: | Technical physics 2015-04, Vol.60 (4), p.510-514 |
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| creator | Aleksandrovich, E. V. Minaev, V. S. Timoshenkov, S. P. |
| description | Raman scattering, X-ray diffraction, and differential scanning calorimetry in the temperature range 300–800 K are used to show that, upon isothermal annealing of glass GeSe
2
powders below the glass-softening temperature (
T
g
= 635 ± 2 K), fragments of high-temperature polymorphic modifications having no long-range order (HTPM polymorphoids) decompose and transform into low-temperature polymorphoids (LTPM) with an exothermic effect. A high concentration of LTPM polymorphoids in the glass and their stabilization upon annealing below
T
g
favor ordering and the appearance of coherent domains of low-temperature α-GeSe
2
(3D form). Upon annealing above
T
g
, the reverse LTPM → HTPM polymorphoid transformation accompanied by an endothermic effect takes place, which results in the predominance of HTPM β-GeSe
2
polymorphoids (2D form) in glassy GeSe
2
and their crystallization. |
| doi_str_mv | 10.1134/S1063784215040039 |
| format | Article |
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2
powders below the glass-softening temperature (
T
g
= 635 ± 2 K), fragments of high-temperature polymorphic modifications having no long-range order (HTPM polymorphoids) decompose and transform into low-temperature polymorphoids (LTPM) with an exothermic effect. A high concentration of LTPM polymorphoids in the glass and their stabilization upon annealing below
T
g
favor ordering and the appearance of coherent domains of low-temperature α-GeSe
2
(3D form). Upon annealing above
T
g
, the reverse LTPM → HTPM polymorphoid transformation accompanied by an endothermic effect takes place, which results in the predominance of HTPM β-GeSe
2
polymorphoids (2D form) in glassy GeSe
2
and their crystallization.</description><identifier>ISSN: 1063-7842</identifier><identifier>EISSN: 1090-6525</identifier><identifier>DOI: 10.1134/S1063784215040039</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>Classical and Continuum Physics ; Physics ; Physics and Astronomy ; Solid State</subject><ispartof>Technical physics, 2015-04, Vol.60 (4), p.510-514</ispartof><rights>Pleiades Publishing, Ltd. 2015</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1134/S1063784215040039$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1134/S1063784215040039$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>315,782,786,27931,27932,41495,42564,51326</link.rule.ids></links><search><creatorcontrib>Aleksandrovich, E. V.</creatorcontrib><creatorcontrib>Minaev, V. S.</creatorcontrib><creatorcontrib>Timoshenkov, S. P.</creatorcontrib><title>Structural relaxation of glassy GeSe2 during isothermal annealing below and above Tg</title><title>Technical physics</title><addtitle>Tech. Phys</addtitle><description>Raman scattering, X-ray diffraction, and differential scanning calorimetry in the temperature range 300–800 K are used to show that, upon isothermal annealing of glass GeSe
2
powders below the glass-softening temperature (
T
g
= 635 ± 2 K), fragments of high-temperature polymorphic modifications having no long-range order (HTPM polymorphoids) decompose and transform into low-temperature polymorphoids (LTPM) with an exothermic effect. A high concentration of LTPM polymorphoids in the glass and their stabilization upon annealing below
T
g
favor ordering and the appearance of coherent domains of low-temperature α-GeSe
2
(3D form). Upon annealing above
T
g
, the reverse LTPM → HTPM polymorphoid transformation accompanied by an endothermic effect takes place, which results in the predominance of HTPM β-GeSe
2
polymorphoids (2D form) in glassy GeSe
2
and their crystallization.</description><subject>Classical and Continuum Physics</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Solid State</subject><issn>1063-7842</issn><issn>1090-6525</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNplUElOxDAQtBBIDAMP4OYPBLwvRzSCAWkkDgnnyHbskJGJkZ2w_J5EcOPU3VWl6lIBcI3RDcaU3dYYCSoVI5gjhhDVJ2CDkUaV4ISfrrug1cqfg4tSjghhrLjYgKae8uymOZsIs4_my0xDGmEKsI-mlG-497UnsJvzMPZwKGl69fltEZtx9CauoPUxfS53B41NHx42_SU4CyYWf_U3t-Dl4b7ZPVaH5_3T7u5QlSWzrqzkjAZCsDWcca0Y4hpp4a10wSovjHTUOKECY1iqQCm1DnvZKau6zjlGt4D8-pb3NZ7P7THNeVxethi1ay_tv17oD0OVVhY</recordid><startdate>20150401</startdate><enddate>20150401</enddate><creator>Aleksandrovich, E. V.</creator><creator>Minaev, V. S.</creator><creator>Timoshenkov, S. P.</creator><general>Pleiades Publishing</general><scope/></search><sort><creationdate>20150401</creationdate><title>Structural relaxation of glassy GeSe2 during isothermal annealing below and above Tg</title><author>Aleksandrovich, E. V. ; Minaev, V. S. ; Timoshenkov, S. P.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-s1139-b7543f221ba545984059096eb7cfb8e6a7c3ac68f44178f333bc1e7d8b8ddcc43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Classical and Continuum Physics</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Solid State</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Aleksandrovich, E. V.</creatorcontrib><creatorcontrib>Minaev, V. S.</creatorcontrib><creatorcontrib>Timoshenkov, S. P.</creatorcontrib><jtitle>Technical physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Aleksandrovich, E. V.</au><au>Minaev, V. S.</au><au>Timoshenkov, S. P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Structural relaxation of glassy GeSe2 during isothermal annealing below and above Tg</atitle><jtitle>Technical physics</jtitle><stitle>Tech. Phys</stitle><date>2015-04-01</date><risdate>2015</risdate><volume>60</volume><issue>4</issue><spage>510</spage><epage>514</epage><pages>510-514</pages><issn>1063-7842</issn><eissn>1090-6525</eissn><abstract>Raman scattering, X-ray diffraction, and differential scanning calorimetry in the temperature range 300–800 K are used to show that, upon isothermal annealing of glass GeSe
2
powders below the glass-softening temperature (
T
g
= 635 ± 2 K), fragments of high-temperature polymorphic modifications having no long-range order (HTPM polymorphoids) decompose and transform into low-temperature polymorphoids (LTPM) with an exothermic effect. A high concentration of LTPM polymorphoids in the glass and their stabilization upon annealing below
T
g
favor ordering and the appearance of coherent domains of low-temperature α-GeSe
2
(3D form). Upon annealing above
T
g
, the reverse LTPM → HTPM polymorphoid transformation accompanied by an endothermic effect takes place, which results in the predominance of HTPM β-GeSe
2
polymorphoids (2D form) in glassy GeSe
2
and their crystallization.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.1134/S1063784215040039</doi><tpages>5</tpages></addata></record> |
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| ispartof | Technical physics, 2015-04, Vol.60 (4), p.510-514 |
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| language | eng |
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| source | SpringerNature Journals |
| subjects | Classical and Continuum Physics Physics Physics and Astronomy Solid State |
| title | Structural relaxation of glassy GeSe2 during isothermal annealing below and above Tg |
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