Glass-Like Thermal Conductivity of (010)-Textured Lanthanum-Doped Strontium Niobate Synthesized with Wet Chemical Deposition
We have measured the cross‐plane thermal conductivity (κ) of (010)‐textured, undoped, and lanthanum‐doped strontium niobate (Sr2−xLaxNb2O7−δ) thin films via time‐domain thermoreflectance. The thin films were deposited on (001)‐oriented SrTiO3 substrates via the highly‐scalable technique of chemical...
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| Veröffentlicht in: | Journal of the American Ceramic Society 2015-02, Vol.98 (2), p.624-628 |
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| container_title | Journal of the American Ceramic Society |
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| creator | Foley, Brian M. Brown-Shaklee, Harlan J. Campion, Michael J. Medlin, Douglas L. Clem, Paul G. Ihlefeld, Jon F. Hopkins, Patrick E. |
| description | We have measured the cross‐plane thermal conductivity (κ) of (010)‐textured, undoped, and lanthanum‐doped strontium niobate (Sr2−xLaxNb2O7−δ) thin films via time‐domain thermoreflectance. The thin films were deposited on (001)‐oriented SrTiO3 substrates via the highly‐scalable technique of chemical solution deposition. We find that both film thickness and lanthanum doping have little effect on κ, suggesting that there is a more dominant phonon scattering mechanism present in the system; namely the weak interlayer‐bonding along the b‐axis in the Sr2Nb2O7 parent structure. Furthermore, we compare our experimental results with two variations of the minimum‐limit model for κ and discuss the nature of transport in material systems with weakly‐bonded layers. The low cross‐plane κ of these scalably‐fabricated films is comparable to that of similarly layered niobate structures grown epitaxially. |
| doi_str_mv | 10.1111/jace.13318 |
| format | Article |
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(SNL-NM), Albuquerque, NM (United States) ; White, M. ; White, M.</creatorcontrib><description>We have measured the cross‐plane thermal conductivity (κ) of (010)‐textured, undoped, and lanthanum‐doped strontium niobate (Sr2−xLaxNb2O7−δ) thin films via time‐domain thermoreflectance. The thin films were deposited on (001)‐oriented SrTiO3 substrates via the highly‐scalable technique of chemical solution deposition. We find that both film thickness and lanthanum doping have little effect on κ, suggesting that there is a more dominant phonon scattering mechanism present in the system; namely the weak interlayer‐bonding along the b‐axis in the Sr2Nb2O7 parent structure. Furthermore, we compare our experimental results with two variations of the minimum‐limit model for κ and discuss the nature of transport in material systems with weakly‐bonded layers. The low cross‐plane κ of these scalably‐fabricated films is comparable to that of similarly layered niobate structures grown epitaxially.</description><identifier>ISSN: 0002-7820</identifier><identifier>EISSN: 1551-2916</identifier><identifier>DOI: 10.1111/jace.13318</identifier><identifier>CODEN: JACTAW</identifier><language>eng</language><publisher>Columbus: Blackwell Publishing Ltd</publisher><subject>Ceramics ; Heat conductivity ; MATERIALS SCIENCE ; Molecular structure ; Scattering ; Thin films</subject><ispartof>Journal of the American Ceramic Society, 2015-02, Vol.98 (2), p.624-628</ispartof><rights>2014 The American Ceramic Society</rights><rights>Copyright Wiley Subscription Services, Inc. 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(SNL-NM), Albuquerque, NM (United States)</creatorcontrib><title>Glass-Like Thermal Conductivity of (010)-Textured Lanthanum-Doped Strontium Niobate Synthesized with Wet Chemical Deposition</title><title>Journal of the American Ceramic Society</title><addtitle>J. Am. Ceram. Soc</addtitle><description>We have measured the cross‐plane thermal conductivity (κ) of (010)‐textured, undoped, and lanthanum‐doped strontium niobate (Sr2−xLaxNb2O7−δ) thin films via time‐domain thermoreflectance. The thin films were deposited on (001)‐oriented SrTiO3 substrates via the highly‐scalable technique of chemical solution deposition. We find that both film thickness and lanthanum doping have little effect on κ, suggesting that there is a more dominant phonon scattering mechanism present in the system; namely the weak interlayer‐bonding along the b‐axis in the Sr2Nb2O7 parent structure. Furthermore, we compare our experimental results with two variations of the minimum‐limit model for κ and discuss the nature of transport in material systems with weakly‐bonded layers. The low cross‐plane κ of these scalably‐fabricated films is comparable to that of similarly layered niobate structures grown epitaxially.</description><subject>Ceramics</subject><subject>Heat conductivity</subject><subject>MATERIALS SCIENCE</subject><subject>Molecular structure</subject><subject>Scattering</subject><subject>Thin films</subject><issn>0002-7820</issn><issn>1551-2916</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNp9kU1v1DAQhi0EEkvhwi-w4AJILnacD_tYpWVhWRWJLpSb5TgTxdtNvNgO7SJ-PN4GODKX0Wie99V8IPSc0VOW4u1WGzhlnDPxAC1YUTCSSVY-RAtKaUYqkdHH6EkI21QyKfIF-rXc6RDI2t4A3vTgB73DtRvbyUT7w8YDdh1-RRl9TTZwFycPLV7rMfZ6nAZy7vapvorejdFOA760rtER8NUhERDsz9S9tbHH1xBx3cNgTbI_h70LNlo3PkWPOr0L8OxPPkFf3l1s6vdk_Wn5oT5bE8PLUpBW5h1rGpHLvCxYK0XTyqpsJdWatkBZWfFMci4qkeuyrKqmE1C1hlc5dJp1lJ-gF7OvC9GqYGwE0xs3jmCiOt6N0yxBL2do7933CUJUWzf5Mc2lWJnLLOOSHa3ezJTxLgQPndp7O2h_UIzeW6njC9T9CxLMZvjW7uDwH1KtzuqLvxoya2yIcPdPo_2NSntWhbq-XKrVx9XXz99WtSr4b3Sol4c</recordid><startdate>201502</startdate><enddate>201502</enddate><creator>Foley, Brian M.</creator><creator>Brown-Shaklee, Harlan J.</creator><creator>Campion, Michael J.</creator><creator>Medlin, Douglas L.</creator><creator>Clem, Paul G.</creator><creator>Ihlefeld, Jon F.</creator><creator>Hopkins, Patrick E.</creator><general>Blackwell Publishing Ltd</general><general>Wiley Subscription Services, Inc</general><general>American Ceramic Society</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><scope>OIOZB</scope><scope>OTOTI</scope></search><sort><creationdate>201502</creationdate><title>Glass-Like Thermal Conductivity of (010)-Textured Lanthanum-Doped Strontium Niobate Synthesized with Wet Chemical Deposition</title><author>Foley, Brian M. ; Brown-Shaklee, Harlan J. ; Campion, Michael J. ; Medlin, Douglas L. ; Clem, Paul G. ; Ihlefeld, Jon F. ; Hopkins, Patrick E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3668-d94f1bb8494651d98bd976d90aa0de0167329338784a6677bf8e7dc374efa1f03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Ceramics</topic><topic>Heat conductivity</topic><topic>MATERIALS SCIENCE</topic><topic>Molecular structure</topic><topic>Scattering</topic><topic>Thin films</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Foley, Brian M.</creatorcontrib><creatorcontrib>Brown-Shaklee, Harlan J.</creatorcontrib><creatorcontrib>Campion, Michael J.</creatorcontrib><creatorcontrib>Medlin, Douglas L.</creatorcontrib><creatorcontrib>Clem, Paul G.</creatorcontrib><creatorcontrib>Ihlefeld, Jon F.</creatorcontrib><creatorcontrib>Hopkins, Patrick E.</creatorcontrib><creatorcontrib>Sandia National Lab. 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We find that both film thickness and lanthanum doping have little effect on κ, suggesting that there is a more dominant phonon scattering mechanism present in the system; namely the weak interlayer‐bonding along the b‐axis in the Sr2Nb2O7 parent structure. Furthermore, we compare our experimental results with two variations of the minimum‐limit model for κ and discuss the nature of transport in material systems with weakly‐bonded layers. The low cross‐plane κ of these scalably‐fabricated films is comparable to that of similarly layered niobate structures grown epitaxially.</abstract><cop>Columbus</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1111/jace.13318</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Ceramics Heat conductivity MATERIALS SCIENCE Molecular structure Scattering Thin films |
| title | Glass-Like Thermal Conductivity of (010)-Textured Lanthanum-Doped Strontium Niobate Synthesized with Wet Chemical Deposition |
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