Influence of amorphous structure on polymorphism in vanadia
Normally we think of the glassy state as a single phase and therefore crystallization from chemically identical amorphous precursors should be identical. Here we show that the local structure of an amorphous precursor is distinct depending on the initial deposition conditions, resulting in significa...
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Veröffentlicht in: | APL materials 2016-07, Vol.4 (7) |
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creator | Stone, Kevin H. Schelhas, Laura T. Garten, Lauren M. Shyam, Badri Mehta, Apurva Ndione, Paul F. Ginley, David S. Toney, Michael F. |
description | Normally we think of the glassy state as a single phase and therefore crystallization from chemically identical amorphous precursors should be identical. Here we show that the local structure of an amorphous precursor is distinct depending on the initial deposition conditions, resulting in significant differences in the final state material. Using grazing incidence total x-ray scattering, we have determined the local structure in amorphous thin films of vanadium oxide grown under different conditions using pulsed laser deposition (PLD). Here we show that the subsequent crystallization of films deposited using different initial PLD conditions result in the formation of different polymorphs of VO2. This suggests the possibility of controlling the formation of metastable polymorphs by tuning the initial amorphous structure to different formation pathways. |
doi_str_mv | 10.1063/1.4958674 |
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(NREL), Golden, CO (United States) ; Energy Frontier Research Centers (EFRC) (United States). Center for Next Generation of Materials by Design: Incorporating Metastability (CNGMD)</creatorcontrib><description>Normally we think of the glassy state as a single phase and therefore crystallization from chemically identical amorphous precursors should be identical. Here we show that the local structure of an amorphous precursor is distinct depending on the initial deposition conditions, resulting in significant differences in the final state material. Using grazing incidence total x-ray scattering, we have determined the local structure in amorphous thin films of vanadium oxide grown under different conditions using pulsed laser deposition (PLD). Here we show that the subsequent crystallization of films deposited using different initial PLD conditions result in the formation of different polymorphs of VO2. 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Here we show that the subsequent crystallization of films deposited using different initial PLD conditions result in the formation of different polymorphs of VO2. This suggests the possibility of controlling the formation of metastable polymorphs by tuning the initial amorphous structure to different formation pathways.</description><subject>amorphous state</subject><subject>crystal structure</subject><subject>crystallization</subject><subject>MATERIALS SCIENCE</subject><subject>polymorphism</subject><subject>pulsed laser deposition</subject><subject>SOLAR ENERGY</subject><issn>2166-532X</issn><issn>2166-532X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNp90N9LwzAQB_AgCo65B_-D4ptCZ65p0hafZPhjMPBFwbeQpgmLtElJ0sH-ezs7VBB8uuPuw5fjELoEvATMyC0s84qWrMhP0CwDxlJKsvfTX_05WoTwgTEGTEhZsRm6W1vdDspKlTidiM75fuuGkIToBxkHP45t0rt2_7UxoUuMTXbCisaIC3SmRRvU4ljn6O3x4XX1nG5entar-00qCYOYSik00FLqRkKVK0awrnPIMMspVEWhGkEbDawsmKC1ysf7cV1qTGsiKCEVI3N0NeW6EA0P0kQlt9JZq2TkkLEMMIzoekLSuxC80rz3phN-zwHzw3c48ON3Rnsz2UOWiMbZb7xz_gfyvtH_4b_Jn-W-cpI</recordid><startdate>20160701</startdate><enddate>20160701</enddate><creator>Stone, Kevin H.</creator><creator>Schelhas, Laura T.</creator><creator>Garten, Lauren M.</creator><creator>Shyam, Badri</creator><creator>Mehta, Apurva</creator><creator>Ndione, Paul F.</creator><creator>Ginley, David S.</creator><creator>Toney, Michael F.</creator><general>American Institute of Physics</general><scope>AJDQP</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>20160701</creationdate><title>Influence of amorphous structure on polymorphism in vanadia</title><author>Stone, Kevin H. ; Schelhas, Laura T. ; Garten, Lauren M. ; Shyam, Badri ; Mehta, Apurva ; Ndione, Paul F. ; Ginley, David S. ; Toney, Michael F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c361t-ccaf158cfdc194e630fb41206451977eda5df16876a5be48670b8f05b3a533963</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>amorphous state</topic><topic>crystal structure</topic><topic>crystallization</topic><topic>MATERIALS SCIENCE</topic><topic>polymorphism</topic><topic>pulsed laser deposition</topic><topic>SOLAR ENERGY</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Stone, Kevin H.</creatorcontrib><creatorcontrib>Schelhas, Laura T.</creatorcontrib><creatorcontrib>Garten, Lauren M.</creatorcontrib><creatorcontrib>Shyam, Badri</creatorcontrib><creatorcontrib>Mehta, Apurva</creatorcontrib><creatorcontrib>Ndione, Paul F.</creatorcontrib><creatorcontrib>Ginley, David S.</creatorcontrib><creatorcontrib>Toney, Michael F.</creatorcontrib><creatorcontrib>SLAC National Accelerator Lab., Menlo Park, CA (United States)</creatorcontrib><creatorcontrib>National Renewable Energy Lab. 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Here we show that the subsequent crystallization of films deposited using different initial PLD conditions result in the formation of different polymorphs of VO2. This suggests the possibility of controlling the formation of metastable polymorphs by tuning the initial amorphous structure to different formation pathways.</abstract><cop>United States</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4958674</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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subjects | amorphous state crystal structure crystallization MATERIALS SCIENCE polymorphism pulsed laser deposition SOLAR ENERGY |
title | Influence of amorphous structure on polymorphism in vanadia |
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