Phase Formation and Electronic Transport Properties in the Corundum (Ti 2O 3)-Ilmenite (MgTiO 3) System
At high temperatures the Ti 2O 3-MgTiO 3 system shows extensive solid solution formation with an order/disorder transition between ilmenite- and corundum-type structures. At lower temperatures (
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| Veröffentlicht in: | Journal of solid state chemistry 1993-03, Vol.103 (1), p.30-37 |
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| container_title | Journal of solid state chemistry |
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| creator | Sheikh, A.B. Irvine, J.T.S. |
| description | At high temperatures the Ti
2O
3-MgTiO
3 system shows extensive solid solution formation with an order/disorder transition between ilmenite- and corundum-type structures. At lower temperatures ( |
| doi_str_mv | 10.1006/jssc.1993.1075 |
| format | Article |
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2O
3-MgTiO
3 system shows extensive solid solution formation with an order/disorder transition between ilmenite- and corundum-type structures. At lower temperatures (<1000°C), there exists a large immiscibility dome, extending from Mg
0.9Ti
1.1O
3 to Mg
0.4Ti
1.6O
3. Although X-ray peak intensities indicate a gradual change from order to disorder with composition, there is a discontinuity at the ilmenite/corundum boundary. The relationship between unit cell parameters and composition generally obeys Vegard's Law, apart from a deviation close to the Ti
2O
3 end member. Above 180 K thermally activated conductivity is observed, with a discontinuity at the corundum/ilmenite boundary. At lower temperatures, a change in conductivity behavior occurs, with a linear relationship between log resistivity and temperature being found up to 30 K in samples with low Ti oxidation state.</description><identifier>ISSN: 0022-4596</identifier><identifier>EISSN: 1095-726X</identifier><identifier>DOI: 10.1006/jssc.1993.1075</identifier><identifier>CODEN: JSSCBI</identifier><language>eng</language><publisher>San Diego, CA: Elsevier Inc</publisher><subject>360202 - Ceramics, Cermets, & Refractories- Structure & Phase Studies ; ALKALINE EARTH METAL COMPOUNDS ; CHALCOGENIDES ; CHEMICAL COMPOSITION ; CHEMICAL REACTIONS ; Condensed matter: structure, mechanical and thermal properties ; CORUNDUM ; Crystalline state (including molecular motions in solids) ; Crystallographic aspects of phase transformations; pressure effects ; ELECTRIC CONDUCTIVITY ; ELECTRICAL PROPERTIES ; ELECTRON TRANSFER ; Exact sciences and technology ; ILMENITE ; LATTICE PARAMETERS ; MAGNESIUM COMPOUNDS ; MAGNESIUM OXIDES ; MATERIALS SCIENCE ; MINERALS ; OXIDATION ; OXIDE MINERALS ; OXIDES ; OXYGEN COMPOUNDS ; PHASE STUDIES ; PHYSICAL PROPERTIES ; Physics ; STOICHIOMETRY ; Structure of solids and liquids; crystallography ; TEMPERATURE DEPENDENCE ; TEMPERATURE RANGE ; TEMPERATURE RANGE 0000-0013 K ; TEMPERATURE RANGE 0013-0065 K ; TEMPERATURE RANGE 0065-0273 K ; TEMPERATURE RANGE 0273-0400 K ; TITANIUM COMPOUNDS ; TITANIUM OXIDES ; TRANSITION ELEMENT COMPOUNDS</subject><ispartof>Journal of solid state chemistry, 1993-03, Vol.103 (1), p.30-37</ispartof><rights>1993 Academic Press</rights><rights>1993 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c342t-e0f50c84028cbafd9cce1630a984d1378f95ce66a8a135d5156013181cc367713</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0022459683710753$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,776,780,881,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=4846751$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/6135170$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Sheikh, A.B.</creatorcontrib><creatorcontrib>Irvine, J.T.S.</creatorcontrib><title>Phase Formation and Electronic Transport Properties in the Corundum (Ti 2O 3)-Ilmenite (MgTiO 3) System</title><title>Journal of solid state chemistry</title><description>At high temperatures the Ti
2O
3-MgTiO
3 system shows extensive solid solution formation with an order/disorder transition between ilmenite- and corundum-type structures. At lower temperatures (<1000°C), there exists a large immiscibility dome, extending from Mg
0.9Ti
1.1O
3 to Mg
0.4Ti
1.6O
3. Although X-ray peak intensities indicate a gradual change from order to disorder with composition, there is a discontinuity at the ilmenite/corundum boundary. The relationship between unit cell parameters and composition generally obeys Vegard's Law, apart from a deviation close to the Ti
2O
3 end member. Above 180 K thermally activated conductivity is observed, with a discontinuity at the corundum/ilmenite boundary. At lower temperatures, a change in conductivity behavior occurs, with a linear relationship between log resistivity and temperature being found up to 30 K in samples with low Ti oxidation state.</description><subject>360202 - Ceramics, Cermets, & Refractories- Structure & Phase Studies</subject><subject>ALKALINE EARTH METAL COMPOUNDS</subject><subject>CHALCOGENIDES</subject><subject>CHEMICAL COMPOSITION</subject><subject>CHEMICAL REACTIONS</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>CORUNDUM</subject><subject>Crystalline state (including molecular motions in solids)</subject><subject>Crystallographic aspects of phase transformations; pressure effects</subject><subject>ELECTRIC CONDUCTIVITY</subject><subject>ELECTRICAL PROPERTIES</subject><subject>ELECTRON TRANSFER</subject><subject>Exact sciences and technology</subject><subject>ILMENITE</subject><subject>LATTICE PARAMETERS</subject><subject>MAGNESIUM COMPOUNDS</subject><subject>MAGNESIUM OXIDES</subject><subject>MATERIALS SCIENCE</subject><subject>MINERALS</subject><subject>OXIDATION</subject><subject>OXIDE MINERALS</subject><subject>OXIDES</subject><subject>OXYGEN COMPOUNDS</subject><subject>PHASE STUDIES</subject><subject>PHYSICAL PROPERTIES</subject><subject>Physics</subject><subject>STOICHIOMETRY</subject><subject>Structure of solids and liquids; crystallography</subject><subject>TEMPERATURE DEPENDENCE</subject><subject>TEMPERATURE RANGE</subject><subject>TEMPERATURE RANGE 0000-0013 K</subject><subject>TEMPERATURE RANGE 0013-0065 K</subject><subject>TEMPERATURE RANGE 0065-0273 K</subject><subject>TEMPERATURE RANGE 0273-0400 K</subject><subject>TITANIUM COMPOUNDS</subject><subject>TITANIUM OXIDES</subject><subject>TRANSITION ELEMENT COMPOUNDS</subject><issn>0022-4596</issn><issn>1095-726X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1993</creationdate><recordtype>article</recordtype><recordid>eNp1kEFLAzEQhYMoWKtXz0E86GFrstlks0cpVQsVBSt4W-LsrE3pJiVJhf57d6l48zTM8N68mY-QS84mnDF1t44RJryqRN-W8oiMOKtkVubq45iMGMvzrJCVOiVnMa4Z41zqYkS-XlcmIn3woTPJekeNa-hsg5CCdxboMhgXtz4k-hr8FkOyGKl1NK2QTn3YuWbX0ZulpfkLFbfZfNOhswnpzfPX0g4j-raPCbtzctKaTcSL3zom7w-z5fQpW7w8zqf3iwxEkacMWSsZ6ILlGj5N21QAyJVgptJFw0Wp20oCKmW04UI2kkvFuOCaAwhVllyMydVhr4_J1hH6W2AF3rn-o1r1Hl6yXjQ5iCD4GAO29TbYzoR9zVk9sKwHlvXAsh5Y9obrg2FrIphN20MBG_9chS5UKYdwfZBh_-G3xTAcgA6wsWHIb7z9L-EHfG6Fwg</recordid><startdate>19930301</startdate><enddate>19930301</enddate><creator>Sheikh, A.B.</creator><creator>Irvine, J.T.S.</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>19930301</creationdate><title>Phase Formation and Electronic Transport Properties in the Corundum (Ti 2O 3)-Ilmenite (MgTiO 3) System</title><author>Sheikh, A.B. ; Irvine, J.T.S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c342t-e0f50c84028cbafd9cce1630a984d1378f95ce66a8a135d5156013181cc367713</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1993</creationdate><topic>360202 - Ceramics, Cermets, & Refractories- Structure & Phase Studies</topic><topic>ALKALINE EARTH METAL COMPOUNDS</topic><topic>CHALCOGENIDES</topic><topic>CHEMICAL COMPOSITION</topic><topic>CHEMICAL REACTIONS</topic><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>CORUNDUM</topic><topic>Crystalline state (including molecular motions in solids)</topic><topic>Crystallographic aspects of phase transformations; pressure effects</topic><topic>ELECTRIC CONDUCTIVITY</topic><topic>ELECTRICAL PROPERTIES</topic><topic>ELECTRON TRANSFER</topic><topic>Exact sciences and technology</topic><topic>ILMENITE</topic><topic>LATTICE PARAMETERS</topic><topic>MAGNESIUM COMPOUNDS</topic><topic>MAGNESIUM OXIDES</topic><topic>MATERIALS SCIENCE</topic><topic>MINERALS</topic><topic>OXIDATION</topic><topic>OXIDE MINERALS</topic><topic>OXIDES</topic><topic>OXYGEN COMPOUNDS</topic><topic>PHASE STUDIES</topic><topic>PHYSICAL PROPERTIES</topic><topic>Physics</topic><topic>STOICHIOMETRY</topic><topic>Structure of solids and liquids; crystallography</topic><topic>TEMPERATURE DEPENDENCE</topic><topic>TEMPERATURE RANGE</topic><topic>TEMPERATURE RANGE 0000-0013 K</topic><topic>TEMPERATURE RANGE 0013-0065 K</topic><topic>TEMPERATURE RANGE 0065-0273 K</topic><topic>TEMPERATURE RANGE 0273-0400 K</topic><topic>TITANIUM COMPOUNDS</topic><topic>TITANIUM OXIDES</topic><topic>TRANSITION ELEMENT COMPOUNDS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sheikh, A.B.</creatorcontrib><creatorcontrib>Irvine, J.T.S.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Journal of solid state chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sheikh, A.B.</au><au>Irvine, J.T.S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Phase Formation and Electronic Transport Properties in the Corundum (Ti 2O 3)-Ilmenite (MgTiO 3) System</atitle><jtitle>Journal of solid state chemistry</jtitle><date>1993-03-01</date><risdate>1993</risdate><volume>103</volume><issue>1</issue><spage>30</spage><epage>37</epage><pages>30-37</pages><issn>0022-4596</issn><eissn>1095-726X</eissn><coden>JSSCBI</coden><abstract>At high temperatures the Ti
2O
3-MgTiO
3 system shows extensive solid solution formation with an order/disorder transition between ilmenite- and corundum-type structures. At lower temperatures (<1000°C), there exists a large immiscibility dome, extending from Mg
0.9Ti
1.1O
3 to Mg
0.4Ti
1.6O
3. Although X-ray peak intensities indicate a gradual change from order to disorder with composition, there is a discontinuity at the ilmenite/corundum boundary. The relationship between unit cell parameters and composition generally obeys Vegard's Law, apart from a deviation close to the Ti
2O
3 end member. Above 180 K thermally activated conductivity is observed, with a discontinuity at the corundum/ilmenite boundary. At lower temperatures, a change in conductivity behavior occurs, with a linear relationship between log resistivity and temperature being found up to 30 K in samples with low Ti oxidation state.</abstract><cop>San Diego, CA</cop><pub>Elsevier Inc</pub><doi>10.1006/jssc.1993.1075</doi><tpages>8</tpages></addata></record> |
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| identifier | ISSN: 0022-4596 |
| ispartof | Journal of solid state chemistry, 1993-03, Vol.103 (1), p.30-37 |
| issn | 0022-4596 1095-726X |
| language | eng |
| recordid | cdi_osti_scitechconnect_6135170 |
| source | Elsevier ScienceDirect Journals Complete |
| subjects | 360202 - Ceramics, Cermets, & Refractories- Structure & Phase Studies ALKALINE EARTH METAL COMPOUNDS CHALCOGENIDES CHEMICAL COMPOSITION CHEMICAL REACTIONS Condensed matter: structure, mechanical and thermal properties CORUNDUM Crystalline state (including molecular motions in solids) Crystallographic aspects of phase transformations pressure effects ELECTRIC CONDUCTIVITY ELECTRICAL PROPERTIES ELECTRON TRANSFER Exact sciences and technology ILMENITE LATTICE PARAMETERS MAGNESIUM COMPOUNDS MAGNESIUM OXIDES MATERIALS SCIENCE MINERALS OXIDATION OXIDE MINERALS OXIDES OXYGEN COMPOUNDS PHASE STUDIES PHYSICAL PROPERTIES Physics STOICHIOMETRY Structure of solids and liquids crystallography TEMPERATURE DEPENDENCE TEMPERATURE RANGE TEMPERATURE RANGE 0000-0013 K TEMPERATURE RANGE 0013-0065 K TEMPERATURE RANGE 0065-0273 K TEMPERATURE RANGE 0273-0400 K TITANIUM COMPOUNDS TITANIUM OXIDES TRANSITION ELEMENT COMPOUNDS |
| title | Phase Formation and Electronic Transport Properties in the Corundum (Ti 2O 3)-Ilmenite (MgTiO 3) System |
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