Preparation, crystal structure, and superconductive characteristics of new oxynitrides (Nb 1− x M x )(N 1− y O y ) where M=Mg, Si, and x≈ y
New niobium oxynitrides containing either magnesium or silicon were prepared at 1000 °C by ammonia nitridation of oxide precursors obtained via the citrate route. The products had rock-salt type crystal structures. Crystallinity was improved by annealing in 0.5 MPa N 2 and the final compositions wer...
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| creator | Ohashi, Yoshio Motohashi, Teruki Masubuchi, Yuji Moriga, Toshihiro Murai, Keiichiro Kikkawa, Shinichi |
| description | New niobium oxynitrides containing either magnesium or silicon were prepared at 1000
°C by ammonia nitridation of oxide precursors obtained via the citrate route. The products had rock-salt type crystal structures. Crystallinity was improved by annealing in 0.5
MPa N
2 and the final compositions were (Nb
0.95Mg
0.05)(N
0.92O
0.08) at 1500
°C and (Nb
0.87Si
0.09□
0.04)(N
0.87O
0.13) at 1200
°C. The magnesium and oxide ions partially co-substitute the niobium and nitride ions in the octahedral sites of the δ-NbN lattice, respectively. Silicon ions were also successfully doped together with oxide ions into the rock-salt type NbN lattice. The Si doped product exhibited relatively large displacement at the octahedral sites and was accompanied by a small amount of cation vacancies. Superconductivity was improved by annealing to obtain critical temperatures/volume fractions of
T
c=17.6
K/100% for Mg- and
T
c=16.2
K/95% for the Si-doped niobium oxynitrides.
Doped silicon ions substituting Nb in (Nb
0.87Si
0.09□
0.04)(N
0.87O
0.13) introduced a large displacement at the 4
a site mainly because of the accompanied vacancy. The silicon ions may also be slightly shifted from the regular octahedral 4
a site (green) towards the interstitial tetrahedral site (red) statistically in the rock-salt type lattice.
[Display omitted]
► New superconducting niobium oxynitrides containing either magnesium or silicon were prepared. ► Their annealed products had chemical compositions of (Nb
0.95Mg
0.05)(N
0.92O
0.08) and (Nb
0.87Si
0.09□
0.04)(N
0.87O
0.13) in the rock-salt type structure. ► Their superconductivities were
T
c/volume fraction=17.6
K/100% and 16.2
K/95%, respectively. |
| doi_str_mv | 10.1016/j.jssc.2011.06.003 |
| format | Article |
| fullrecord | <record><control><sourceid>elsevier_osti_</sourceid><recordid>TN_cdi_osti_scitechconnect_21580226</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0022459611003148</els_id><sourcerecordid>S0022459611003148</sourcerecordid><originalsourceid>FETCH-LOGICAL-c424t-eec5b9c03fe62fcc100c0d398c3ed39ebf40faa42ebe7e2d48ed91bee0a6ea213</originalsourceid><addsrcrecordid>eNp9kM9q3DAQxkVoIds0L5CToBQSWDsjWfauoTmU0H-QTQpNIDchj8ddLVt7kbTJ-g2SY_OIeZLKuOSYwzBo-D7NfD_GjgSkAkRxukpX3mMqQYgUihQg22MTAWWezGRx-4ZNAKRMVF4W--yd9yuIwnyuJuzvT0cb40ywXTvl6HofzJr74LYYto6m3LQ199sNOezaOg7tHXFcRgcGctYHi553DW_pnne7vrXB2Zo8P76suHh-eOI7voh1cnw5Pnt-FeuE3y_JEV-cLX5P-S87rtk9Pz7w_j1725i1p8P__YDdfP1yff49ubj69uP880WCSqqQEGFelQhZQ4VsEAUAQp2Vc8woNqoaBY0xSlJFM5K1mlNdiooITEFGiuyAfRj_7WII7dEGwmUM2RIGLSOdSKyIKjmq0HXeO2r0xtk_xvVagB7Q65Ue0OsBvYZCR_TR9HE0bYxHs26cadH6F6dUKs_mMxV1n0YdxZx3ltxwBrVItXXDFXVnX1vzDz6MnN4</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Preparation, crystal structure, and superconductive characteristics of new oxynitrides (Nb 1− x M x )(N 1− y O y ) where M=Mg, Si, and x≈ y</title><source>Elsevier ScienceDirect Journals Complete</source><creator>Ohashi, Yoshio ; Motohashi, Teruki ; Masubuchi, Yuji ; Moriga, Toshihiro ; Murai, Keiichiro ; Kikkawa, Shinichi</creator><creatorcontrib>Ohashi, Yoshio ; Motohashi, Teruki ; Masubuchi, Yuji ; Moriga, Toshihiro ; Murai, Keiichiro ; Kikkawa, Shinichi</creatorcontrib><description>New niobium oxynitrides containing either magnesium or silicon were prepared at 1000
°C by ammonia nitridation of oxide precursors obtained via the citrate route. The products had rock-salt type crystal structures. Crystallinity was improved by annealing in 0.5
MPa N
2 and the final compositions were (Nb
0.95Mg
0.05)(N
0.92O
0.08) at 1500
°C and (Nb
0.87Si
0.09□
0.04)(N
0.87O
0.13) at 1200
°C. The magnesium and oxide ions partially co-substitute the niobium and nitride ions in the octahedral sites of the δ-NbN lattice, respectively. Silicon ions were also successfully doped together with oxide ions into the rock-salt type NbN lattice. The Si doped product exhibited relatively large displacement at the octahedral sites and was accompanied by a small amount of cation vacancies. Superconductivity was improved by annealing to obtain critical temperatures/volume fractions of
T
c=17.6
K/100% for Mg- and
T
c=16.2
K/95% for the Si-doped niobium oxynitrides.
Doped silicon ions substituting Nb in (Nb
0.87Si
0.09□
0.04)(N
0.87O
0.13) introduced a large displacement at the 4
a site mainly because of the accompanied vacancy. The silicon ions may also be slightly shifted from the regular octahedral 4
a site (green) towards the interstitial tetrahedral site (red) statistically in the rock-salt type lattice.
[Display omitted]
► New superconducting niobium oxynitrides containing either magnesium or silicon were prepared. ► Their annealed products had chemical compositions of (Nb
0.95Mg
0.05)(N
0.92O
0.08) and (Nb
0.87Si
0.09□
0.04)(N
0.87O
0.13) in the rock-salt type structure. ► Their superconductivities were
T
c/volume fraction=17.6
K/100% and 16.2
K/95%, respectively.</description><identifier>ISSN: 0022-4596</identifier><identifier>EISSN: 1095-726X</identifier><identifier>DOI: 10.1016/j.jssc.2011.06.003</identifier><identifier>CODEN: JSSCBI</identifier><language>eng</language><publisher>Amsterdam: Elsevier Inc</publisher><subject>ALKALINE EARTH METALS ; ANNEALING ; CHALCOGENIDES ; CHARGED PARTICLES ; COHERENT SCATTERING ; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ; Condensed matter: structure, mechanical and thermal properties ; CRITICAL TEMPERATURE ; Cross-disciplinary physics: materials science; rheology ; CRYSTAL DEFECTS ; CRYSTAL STRUCTURE ; DIFFRACTION ; DOPED MATERIALS ; ELECTRIC CONDUCTIVITY ; ELECTRICAL PROPERTIES ; ELEMENTS ; Exact sciences and technology ; EXAFS ; GEOLOGIC DEPOSITS ; HEAT TREATMENTS ; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ; INTERSTITIALS ; IONS ; MAGNESIUM ; MATERIALS ; Materials science ; METALS ; NEUTRON DIFFRACTION ; Neutron diffraction and scattering ; New compound ; NIOBIUM ; NIOBIUM COMPOUNDS ; NIOBIUM NITRIDES ; NITRIDES ; NITROGEN COMPOUNDS ; OXIDES ; OXYGEN COMPOUNDS ; Oxynitride ; PHYSICAL PROPERTIES ; Physics ; PNICTIDES ; POINT DEFECTS ; REFRACTORY METAL COMPOUNDS ; REFRACTORY METALS ; SALT DEPOSITS ; SCATTERING ; SEMIMETALS ; SILICON ; SILICON IONS ; Single-crystal and powder diffraction ; Structure of solids and liquids; crystallography ; Structure of specific crystalline solids ; SUPERCONDUCTIVITY ; Superconductor ; SUPERCONDUCTORS ; Surface treatments ; THERMODYNAMIC PROPERTIES ; TRANSITION ELEMENT COMPOUNDS ; TRANSITION ELEMENTS ; TRANSITION TEMPERATURE</subject><ispartof>Journal of solid state chemistry, 2011-08, Vol.184 (8), p.2061-2065</ispartof><rights>2011 Elsevier Inc.</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c424t-eec5b9c03fe62fcc100c0d398c3ed39ebf40faa42ebe7e2d48ed91bee0a6ea213</citedby><cites>FETCH-LOGICAL-c424t-eec5b9c03fe62fcc100c0d398c3ed39ebf40faa42ebe7e2d48ed91bee0a6ea213</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jssc.2011.06.003$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,780,784,885,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24453874$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/21580226$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Ohashi, Yoshio</creatorcontrib><creatorcontrib>Motohashi, Teruki</creatorcontrib><creatorcontrib>Masubuchi, Yuji</creatorcontrib><creatorcontrib>Moriga, Toshihiro</creatorcontrib><creatorcontrib>Murai, Keiichiro</creatorcontrib><creatorcontrib>Kikkawa, Shinichi</creatorcontrib><title>Preparation, crystal structure, and superconductive characteristics of new oxynitrides (Nb 1− x M x )(N 1− y O y ) where M=Mg, Si, and x≈ y</title><title>Journal of solid state chemistry</title><description>New niobium oxynitrides containing either magnesium or silicon were prepared at 1000
°C by ammonia nitridation of oxide precursors obtained via the citrate route. The products had rock-salt type crystal structures. Crystallinity was improved by annealing in 0.5
MPa N
2 and the final compositions were (Nb
0.95Mg
0.05)(N
0.92O
0.08) at 1500
°C and (Nb
0.87Si
0.09□
0.04)(N
0.87O
0.13) at 1200
°C. The magnesium and oxide ions partially co-substitute the niobium and nitride ions in the octahedral sites of the δ-NbN lattice, respectively. Silicon ions were also successfully doped together with oxide ions into the rock-salt type NbN lattice. The Si doped product exhibited relatively large displacement at the octahedral sites and was accompanied by a small amount of cation vacancies. Superconductivity was improved by annealing to obtain critical temperatures/volume fractions of
T
c=17.6
K/100% for Mg- and
T
c=16.2
K/95% for the Si-doped niobium oxynitrides.
Doped silicon ions substituting Nb in (Nb
0.87Si
0.09□
0.04)(N
0.87O
0.13) introduced a large displacement at the 4
a site mainly because of the accompanied vacancy. The silicon ions may also be slightly shifted from the regular octahedral 4
a site (green) towards the interstitial tetrahedral site (red) statistically in the rock-salt type lattice.
[Display omitted]
► New superconducting niobium oxynitrides containing either magnesium or silicon were prepared. ► Their annealed products had chemical compositions of (Nb
0.95Mg
0.05)(N
0.92O
0.08) and (Nb
0.87Si
0.09□
0.04)(N
0.87O
0.13) in the rock-salt type structure. ► Their superconductivities were
T
c/volume fraction=17.6
K/100% and 16.2
K/95%, respectively.</description><subject>ALKALINE EARTH METALS</subject><subject>ANNEALING</subject><subject>CHALCOGENIDES</subject><subject>CHARGED PARTICLES</subject><subject>COHERENT SCATTERING</subject><subject>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>CRITICAL TEMPERATURE</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>CRYSTAL DEFECTS</subject><subject>CRYSTAL STRUCTURE</subject><subject>DIFFRACTION</subject><subject>DOPED MATERIALS</subject><subject>ELECTRIC CONDUCTIVITY</subject><subject>ELECTRICAL PROPERTIES</subject><subject>ELEMENTS</subject><subject>Exact sciences and technology</subject><subject>EXAFS</subject><subject>GEOLOGIC DEPOSITS</subject><subject>HEAT TREATMENTS</subject><subject>INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY</subject><subject>INTERSTITIALS</subject><subject>IONS</subject><subject>MAGNESIUM</subject><subject>MATERIALS</subject><subject>Materials science</subject><subject>METALS</subject><subject>NEUTRON DIFFRACTION</subject><subject>Neutron diffraction and scattering</subject><subject>New compound</subject><subject>NIOBIUM</subject><subject>NIOBIUM COMPOUNDS</subject><subject>NIOBIUM NITRIDES</subject><subject>NITRIDES</subject><subject>NITROGEN COMPOUNDS</subject><subject>OXIDES</subject><subject>OXYGEN COMPOUNDS</subject><subject>Oxynitride</subject><subject>PHYSICAL PROPERTIES</subject><subject>Physics</subject><subject>PNICTIDES</subject><subject>POINT DEFECTS</subject><subject>REFRACTORY METAL COMPOUNDS</subject><subject>REFRACTORY METALS</subject><subject>SALT DEPOSITS</subject><subject>SCATTERING</subject><subject>SEMIMETALS</subject><subject>SILICON</subject><subject>SILICON IONS</subject><subject>Single-crystal and powder diffraction</subject><subject>Structure of solids and liquids; crystallography</subject><subject>Structure of specific crystalline solids</subject><subject>SUPERCONDUCTIVITY</subject><subject>Superconductor</subject><subject>SUPERCONDUCTORS</subject><subject>Surface treatments</subject><subject>THERMODYNAMIC PROPERTIES</subject><subject>TRANSITION ELEMENT COMPOUNDS</subject><subject>TRANSITION ELEMENTS</subject><subject>TRANSITION TEMPERATURE</subject><issn>0022-4596</issn><issn>1095-726X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNp9kM9q3DAQxkVoIds0L5CToBQSWDsjWfauoTmU0H-QTQpNIDchj8ddLVt7kbTJ-g2SY_OIeZLKuOSYwzBo-D7NfD_GjgSkAkRxukpX3mMqQYgUihQg22MTAWWezGRx-4ZNAKRMVF4W--yd9yuIwnyuJuzvT0cb40ywXTvl6HofzJr74LYYto6m3LQ199sNOezaOg7tHXFcRgcGctYHi553DW_pnne7vrXB2Zo8P76suHh-eOI7voh1cnw5Pnt-FeuE3y_JEV-cLX5P-S87rtk9Pz7w_j1725i1p8P__YDdfP1yff49ubj69uP880WCSqqQEGFelQhZQ4VsEAUAQp2Vc8woNqoaBY0xSlJFM5K1mlNdiooITEFGiuyAfRj_7WII7dEGwmUM2RIGLSOdSKyIKjmq0HXeO2r0xtk_xvVagB7Q65Ue0OsBvYZCR_TR9HE0bYxHs26cadH6F6dUKs_mMxV1n0YdxZx3ltxwBrVItXXDFXVnX1vzDz6MnN4</recordid><startdate>20110801</startdate><enddate>20110801</enddate><creator>Ohashi, Yoshio</creator><creator>Motohashi, Teruki</creator><creator>Masubuchi, Yuji</creator><creator>Moriga, Toshihiro</creator><creator>Murai, Keiichiro</creator><creator>Kikkawa, Shinichi</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>20110801</creationdate><title>Preparation, crystal structure, and superconductive characteristics of new oxynitrides (Nb 1− x M x )(N 1− y O y ) where M=Mg, Si, and x≈ y</title><author>Ohashi, Yoshio ; Motohashi, Teruki ; Masubuchi, Yuji ; Moriga, Toshihiro ; Murai, Keiichiro ; Kikkawa, Shinichi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c424t-eec5b9c03fe62fcc100c0d398c3ed39ebf40faa42ebe7e2d48ed91bee0a6ea213</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>ALKALINE EARTH METALS</topic><topic>ANNEALING</topic><topic>CHALCOGENIDES</topic><topic>CHARGED PARTICLES</topic><topic>COHERENT SCATTERING</topic><topic>CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY</topic><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>CRITICAL TEMPERATURE</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>CRYSTAL DEFECTS</topic><topic>CRYSTAL STRUCTURE</topic><topic>DIFFRACTION</topic><topic>DOPED MATERIALS</topic><topic>ELECTRIC CONDUCTIVITY</topic><topic>ELECTRICAL PROPERTIES</topic><topic>ELEMENTS</topic><topic>Exact sciences and technology</topic><topic>EXAFS</topic><topic>GEOLOGIC DEPOSITS</topic><topic>HEAT TREATMENTS</topic><topic>INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY</topic><topic>INTERSTITIALS</topic><topic>IONS</topic><topic>MAGNESIUM</topic><topic>MATERIALS</topic><topic>Materials science</topic><topic>METALS</topic><topic>NEUTRON DIFFRACTION</topic><topic>Neutron diffraction and scattering</topic><topic>New compound</topic><topic>NIOBIUM</topic><topic>NIOBIUM COMPOUNDS</topic><topic>NIOBIUM NITRIDES</topic><topic>NITRIDES</topic><topic>NITROGEN COMPOUNDS</topic><topic>OXIDES</topic><topic>OXYGEN COMPOUNDS</topic><topic>Oxynitride</topic><topic>PHYSICAL PROPERTIES</topic><topic>Physics</topic><topic>PNICTIDES</topic><topic>POINT DEFECTS</topic><topic>REFRACTORY METAL COMPOUNDS</topic><topic>REFRACTORY METALS</topic><topic>SALT DEPOSITS</topic><topic>SCATTERING</topic><topic>SEMIMETALS</topic><topic>SILICON</topic><topic>SILICON IONS</topic><topic>Single-crystal and powder diffraction</topic><topic>Structure of solids and liquids; crystallography</topic><topic>Structure of specific crystalline solids</topic><topic>SUPERCONDUCTIVITY</topic><topic>Superconductor</topic><topic>SUPERCONDUCTORS</topic><topic>Surface treatments</topic><topic>THERMODYNAMIC PROPERTIES</topic><topic>TRANSITION ELEMENT COMPOUNDS</topic><topic>TRANSITION ELEMENTS</topic><topic>TRANSITION TEMPERATURE</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ohashi, Yoshio</creatorcontrib><creatorcontrib>Motohashi, Teruki</creatorcontrib><creatorcontrib>Masubuchi, Yuji</creatorcontrib><creatorcontrib>Moriga, Toshihiro</creatorcontrib><creatorcontrib>Murai, Keiichiro</creatorcontrib><creatorcontrib>Kikkawa, Shinichi</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>Ohashi, Yoshio</au><au>Motohashi, Teruki</au><au>Masubuchi, Yuji</au><au>Moriga, Toshihiro</au><au>Murai, Keiichiro</au><au>Kikkawa, Shinichi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Preparation, crystal structure, and superconductive characteristics of new oxynitrides (Nb 1− x M x )(N 1− y O y ) where M=Mg, Si, and x≈ y</atitle><jtitle>Journal of solid state chemistry</jtitle><date>2011-08-01</date><risdate>2011</risdate><volume>184</volume><issue>8</issue><spage>2061</spage><epage>2065</epage><pages>2061-2065</pages><issn>0022-4596</issn><eissn>1095-726X</eissn><coden>JSSCBI</coden><abstract>New niobium oxynitrides containing either magnesium or silicon were prepared at 1000
°C by ammonia nitridation of oxide precursors obtained via the citrate route. The products had rock-salt type crystal structures. Crystallinity was improved by annealing in 0.5
MPa N
2 and the final compositions were (Nb
0.95Mg
0.05)(N
0.92O
0.08) at 1500
°C and (Nb
0.87Si
0.09□
0.04)(N
0.87O
0.13) at 1200
°C. The magnesium and oxide ions partially co-substitute the niobium and nitride ions in the octahedral sites of the δ-NbN lattice, respectively. Silicon ions were also successfully doped together with oxide ions into the rock-salt type NbN lattice. The Si doped product exhibited relatively large displacement at the octahedral sites and was accompanied by a small amount of cation vacancies. Superconductivity was improved by annealing to obtain critical temperatures/volume fractions of
T
c=17.6
K/100% for Mg- and
T
c=16.2
K/95% for the Si-doped niobium oxynitrides.
Doped silicon ions substituting Nb in (Nb
0.87Si
0.09□
0.04)(N
0.87O
0.13) introduced a large displacement at the 4
a site mainly because of the accompanied vacancy. The silicon ions may also be slightly shifted from the regular octahedral 4
a site (green) towards the interstitial tetrahedral site (red) statistically in the rock-salt type lattice.
[Display omitted]
► New superconducting niobium oxynitrides containing either magnesium or silicon were prepared. ► Their annealed products had chemical compositions of (Nb
0.95Mg
0.05)(N
0.92O
0.08) and (Nb
0.87Si
0.09□
0.04)(N
0.87O
0.13) in the rock-salt type structure. ► Their superconductivities were
T
c/volume fraction=17.6
K/100% and 16.2
K/95%, respectively.</abstract><cop>Amsterdam</cop><pub>Elsevier Inc</pub><doi>10.1016/j.jssc.2011.06.003</doi><tpages>5</tpages></addata></record> |
| fulltext | fulltext |
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| ispartof | Journal of solid state chemistry, 2011-08, Vol.184 (8), p.2061-2065 |
| issn | 0022-4596 1095-726X |
| language | eng |
| recordid | cdi_osti_scitechconnect_21580226 |
| source | Elsevier ScienceDirect Journals Complete |
| subjects | ALKALINE EARTH METALS ANNEALING CHALCOGENIDES CHARGED PARTICLES COHERENT SCATTERING CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY Condensed matter: structure, mechanical and thermal properties CRITICAL TEMPERATURE Cross-disciplinary physics: materials science rheology CRYSTAL DEFECTS CRYSTAL STRUCTURE DIFFRACTION DOPED MATERIALS ELECTRIC CONDUCTIVITY ELECTRICAL PROPERTIES ELEMENTS Exact sciences and technology EXAFS GEOLOGIC DEPOSITS HEAT TREATMENTS INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY INTERSTITIALS IONS MAGNESIUM MATERIALS Materials science METALS NEUTRON DIFFRACTION Neutron diffraction and scattering New compound NIOBIUM NIOBIUM COMPOUNDS NIOBIUM NITRIDES NITRIDES NITROGEN COMPOUNDS OXIDES OXYGEN COMPOUNDS Oxynitride PHYSICAL PROPERTIES Physics PNICTIDES POINT DEFECTS REFRACTORY METAL COMPOUNDS REFRACTORY METALS SALT DEPOSITS SCATTERING SEMIMETALS SILICON SILICON IONS Single-crystal and powder diffraction Structure of solids and liquids crystallography Structure of specific crystalline solids SUPERCONDUCTIVITY Superconductor SUPERCONDUCTORS Surface treatments THERMODYNAMIC PROPERTIES TRANSITION ELEMENT COMPOUNDS TRANSITION ELEMENTS TRANSITION TEMPERATURE |
| title | Preparation, crystal structure, and superconductive characteristics of new oxynitrides (Nb 1− x M x )(N 1− y O y ) where M=Mg, Si, and x≈ y |
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