Experimental determination of the enthalpy of formation of the pyrochlore rare‐earth hafnates
In this study, enthalpies of formation of compounds RE2Hf2O7 type (where RE = La, Pr, Nd, Sm, Eu, and Gd), with pyrochlore structure have been measured by high‐temperature oxide melt solution calorimetry. Results were compared with literature data, and dependencies of enthalpies of the formation of...
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| Veröffentlicht in: | Journal of the American Ceramic Society 2023-06, Vol.106 (6), p.3777-3791 |
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| container_title | Journal of the American Ceramic Society |
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| creator | Bajenova, Irina A. Guskov, Anton V. Gagarin, Pavel G. Khvan, Alexandra V. Gavrichev, Konstantin S. |
| description | In this study, enthalpies of formation of compounds RE2Hf2O7 type (where RE = La, Pr, Nd, Sm, Eu, and Gd), with pyrochlore structure have been measured by high‐temperature oxide melt solution calorimetry. Results were compared with literature data, and dependencies of enthalpies of the formation of compounds with the pyrochlore structure from the ionic radius of rare‐earth element were analyzed. The enthalpy of formation becomes more positive with the increase in ionic radius, which is in conformity with the results earlier observed for titanates and zirconates. |
| doi_str_mv | 10.1111/jace.19027 |
| format | Article |
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Results were compared with literature data, and dependencies of enthalpies of the formation of compounds with the pyrochlore structure from the ionic radius of rare‐earth element were analyzed. The enthalpy of formation becomes more positive with the increase in ionic radius, which is in conformity with the results earlier observed for titanates and zirconates.</description><identifier>ISSN: 0002-7820</identifier><identifier>EISSN: 1551-2916</identifier><identifier>DOI: 10.1111/jace.19027</identifier><language>eng</language><publisher>Columbus: Wiley Subscription Services, Inc</publisher><subject>enthalpies of formation ; Enthalpy ; enthalpy increment ; Gadolinium ; lanthanide hafnates ; pyrochlore structure ; Pyrochlores ; thermodynamic properties ; Titanates ; Zirconates</subject><ispartof>Journal of the American Ceramic Society, 2023-06, Vol.106 (6), p.3777-3791</ispartof><rights>2023 The American Ceramic Society.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c2607-551d0a86b2d4385c2100a07b67cf3fef943e9b8b5980d8ed54b1502fd5e29d3</cites><orcidid>0000-0003-0758-3141</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fjace.19027$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fjace.19027$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids></links><search><creatorcontrib>Bajenova, Irina A.</creatorcontrib><creatorcontrib>Guskov, Anton V.</creatorcontrib><creatorcontrib>Gagarin, Pavel G.</creatorcontrib><creatorcontrib>Khvan, Alexandra V.</creatorcontrib><creatorcontrib>Gavrichev, Konstantin S.</creatorcontrib><title>Experimental determination of the enthalpy of formation of the pyrochlore rare‐earth hafnates</title><title>Journal of the American Ceramic Society</title><description>In this study, enthalpies of formation of compounds RE2Hf2O7 type (where RE = La, Pr, Nd, Sm, Eu, and Gd), with pyrochlore structure have been measured by high‐temperature oxide melt solution calorimetry. Results were compared with literature data, and dependencies of enthalpies of the formation of compounds with the pyrochlore structure from the ionic radius of rare‐earth element were analyzed. The enthalpy of formation becomes more positive with the increase in ionic radius, which is in conformity with the results earlier observed for titanates and zirconates.</description><subject>enthalpies of formation</subject><subject>Enthalpy</subject><subject>enthalpy increment</subject><subject>Gadolinium</subject><subject>lanthanide hafnates</subject><subject>pyrochlore structure</subject><subject>Pyrochlores</subject><subject>thermodynamic properties</subject><subject>Titanates</subject><subject>Zirconates</subject><issn>0002-7820</issn><issn>1551-2916</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNp9kEtOwzAQhi0EEqWw4QSR2CGl2E4c28uqKi9VYgF7y4nHSqo0DnYqyI4jcEZOgkvYsGE2o9H_zetH6JLgBYlxs9UVLIjElB-hGWGMpFSS4hjNMMY05YLiU3QWwjaWRIp8htT6vQff7KAbdJsYGMDvmk4PjesSZ5OhhiRKtW778VBb53d_xH70rqpb5yHx2sPXxydoP9RJrW2cAuEcnVjdBrj4zXP0fLt-Wd2nm6e7h9Vyk1a0wDyNlxqsRVFSk2eCVZRgrDEvC17ZzIKVeQayFCWTAhsBhuUlYZhaw4BKk83R1TS19-51D2FQW7f3XVyoKJeZyGnOaaSuJ6ryLgQPVvXxc-1HRbA62KcO9qkf-yJMJvitaWH8h1SPy9V66vkGp7N0MA</recordid><startdate>202306</startdate><enddate>202306</enddate><creator>Bajenova, Irina A.</creator><creator>Guskov, Anton V.</creator><creator>Gagarin, Pavel G.</creator><creator>Khvan, Alexandra V.</creator><creator>Gavrichev, Konstantin S.</creator><general>Wiley Subscription Services, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0003-0758-3141</orcidid></search><sort><creationdate>202306</creationdate><title>Experimental determination of the enthalpy of formation of the pyrochlore rare‐earth hafnates</title><author>Bajenova, Irina A. ; Guskov, Anton V. ; Gagarin, Pavel G. ; Khvan, Alexandra V. ; Gavrichev, Konstantin S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2607-551d0a86b2d4385c2100a07b67cf3fef943e9b8b5980d8ed54b1502fd5e29d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>enthalpies of formation</topic><topic>Enthalpy</topic><topic>enthalpy increment</topic><topic>Gadolinium</topic><topic>lanthanide hafnates</topic><topic>pyrochlore structure</topic><topic>Pyrochlores</topic><topic>thermodynamic properties</topic><topic>Titanates</topic><topic>Zirconates</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bajenova, Irina A.</creatorcontrib><creatorcontrib>Guskov, Anton V.</creatorcontrib><creatorcontrib>Gagarin, Pavel G.</creatorcontrib><creatorcontrib>Khvan, Alexandra V.</creatorcontrib><creatorcontrib>Gavrichev, Konstantin S.</creatorcontrib><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of the American Ceramic Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bajenova, Irina A.</au><au>Guskov, Anton V.</au><au>Gagarin, Pavel G.</au><au>Khvan, Alexandra V.</au><au>Gavrichev, Konstantin S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Experimental determination of the enthalpy of formation of the pyrochlore rare‐earth hafnates</atitle><jtitle>Journal of the American Ceramic Society</jtitle><date>2023-06</date><risdate>2023</risdate><volume>106</volume><issue>6</issue><spage>3777</spage><epage>3791</epage><pages>3777-3791</pages><issn>0002-7820</issn><eissn>1551-2916</eissn><abstract>In this study, enthalpies of formation of compounds RE2Hf2O7 type (where RE = La, Pr, Nd, Sm, Eu, and Gd), with pyrochlore structure have been measured by high‐temperature oxide melt solution calorimetry. Results were compared with literature data, and dependencies of enthalpies of the formation of compounds with the pyrochlore structure from the ionic radius of rare‐earth element were analyzed. The enthalpy of formation becomes more positive with the increase in ionic radius, which is in conformity with the results earlier observed for titanates and zirconates.</abstract><cop>Columbus</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1111/jace.19027</doi><tpages>15</tpages><orcidid>https://orcid.org/0000-0003-0758-3141</orcidid></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | enthalpies of formation Enthalpy enthalpy increment Gadolinium lanthanide hafnates pyrochlore structure Pyrochlores thermodynamic properties Titanates Zirconates |
| title | Experimental determination of the enthalpy of formation of the pyrochlore rare‐earth hafnates |
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