Synthesis and superconducting properties of the strontium copper oxy-fluoride Sr2CuO2F2+δ
HIGH-PRESSURE synthesis has proved a useful technique for obtaining new, metastable copper oxide superconductors; for example, oxygen insertion into Sr 2 CuO 3 at 6 GPa (ref. 1) yields superconducting Sr 2 CuO 3 .i, with transition temperature T c = 70 K, in which the superconducting CuO 2 layers ar...
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| Veröffentlicht in: | Nature (London) 1994-06, Vol.369 (6479), p.382-384 |
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| creator | AI-Mamouri, M. Edwards, P. P. Greaves, C. Slaski, M. |
| description | HIGH-PRESSURE synthesis has proved a useful technique for obtaining new, metastable copper oxide superconductors; for example, oxygen insertion into Sr
2
CuO
3
at 6 GPa (ref. 1) yields superconducting Sr
2
CuO
3
.i, with transition temperature
T
c
= 70 K, in which the superconducting CuO
2
layers are generated by pressure-induced oxygen migration from apical to equatorial sites. Although the simple structure and high transition temperatures make this family (general formula Sr
n+1
Cu
n
O
2n + 1+ δ
) of interest, the stringent synthesis conditions limit its value for applications. Here we report that fluorine insertion into Sr
2
CuO
3
at ambient pressure causes related structural rearrangements to give superconducting Sr
2
CuO
2
F
2 + δ
with a maximum
T
c
of 46 K. In this synthesis, the structural changes previously initiated by the thermodynamic effects of high pressure are induced chemically under ambient conditions. The result is a superconducting oxy-fluoride in which fluorine plays a dominant structural role, rather than merely being an electronic dopant as in La
2
CuO
4
F
x
(ref. 2) and Nd
2
CuO
4−x
F
y
(ref. 3). |
| doi_str_mv | 10.1038/369382a0 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_204466949</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>4952424</sourcerecordid><originalsourceid>FETCH-LOGICAL-c315t-4eda4b4d2e336743e4ba4a3f884241a01039e2b833f55bc63775fe470b8405303</originalsourceid><addsrcrecordid>eNplkM1KAzEUhYMoWKvgIwRxochofu5k0qUUq0Khi-rGzZDJJHVKm4zJDNj38jl8JiOtunB14Z6Pc-49CJ1Sck0JlzdcjLhkiuyhAYVCZCBksY8GhDCZEcnFITqKcUkIyWkBA_Qy37ju1cQmYuVqHPvWBO1d3euucQvcBp8WXWMi9hYnEMcueNc1_Rpr3yYN-_dNZle9D01t8DywcT9jE3b1-XGMDqxaRXOym0P0PLl7Gj9k09n94_h2mmlO8y4DUyuooGaGc1EAN1ApUNxKCQyoIumrkWGV5NzmeaUFL4rcGihIJYHknPAhOtv6pmPfehO7cun74FJkyQiAECMYJehiC-ngYwzGlm1o1ipsSkrK7-LKn-ISer7zU1GrlQ3K6Sb-8sC44LRI2OUWi0lxCxP-Yv9ZfgGWR3nt</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>204466949</pqid></control><display><type>article</type><title>Synthesis and superconducting properties of the strontium copper oxy-fluoride Sr2CuO2F2+δ</title><source>Nature Journals Online</source><source>SpringerLink Journals - AutoHoldings</source><creator>AI-Mamouri, M. ; Edwards, P. P. ; Greaves, C. ; Slaski, M.</creator><creatorcontrib>AI-Mamouri, M. ; Edwards, P. P. ; Greaves, C. ; Slaski, M.</creatorcontrib><description>HIGH-PRESSURE synthesis has proved a useful technique for obtaining new, metastable copper oxide superconductors; for example, oxygen insertion into Sr
2
CuO
3
at 6 GPa (ref. 1) yields superconducting Sr
2
CuO
3
.i, with transition temperature
T
c
= 70 K, in which the superconducting CuO
2
layers are generated by pressure-induced oxygen migration from apical to equatorial sites. Although the simple structure and high transition temperatures make this family (general formula Sr
n+1
Cu
n
O
2n + 1+ δ
) of interest, the stringent synthesis conditions limit its value for applications. Here we report that fluorine insertion into Sr
2
CuO
3
at ambient pressure causes related structural rearrangements to give superconducting Sr
2
CuO
2
F
2 + δ
with a maximum
T
c
of 46 K. In this synthesis, the structural changes previously initiated by the thermodynamic effects of high pressure are induced chemically under ambient conditions. The result is a superconducting oxy-fluoride in which fluorine plays a dominant structural role, rather than merely being an electronic dopant as in La
2
CuO
4
F
x
(ref. 2) and Nd
2
CuO
4−x
F
y
(ref. 3).</description><identifier>ISSN: 0028-0836</identifier><identifier>EISSN: 1476-4687</identifier><identifier>DOI: 10.1038/369382a0</identifier><identifier>CODEN: NATUAS</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>Chemistry ; Copper ; Elements and non-metal compounds (oxides, hydroxides, hydrides, sulfides, carbides, ...) ; Exact sciences and technology ; Humanities and Social Sciences ; Inorganic chemistry and origins of life ; letter ; multidisciplinary ; Preparations and properties ; Science ; Science (multidisciplinary) ; Strontium ; Superconductivity</subject><ispartof>Nature (London), 1994-06, Vol.369 (6479), p.382-384</ispartof><rights>Springer Nature Limited 1994</rights><rights>1994 INIST-CNRS</rights><rights>Copyright Macmillan Journals Ltd. Jun 2, 1994</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c315t-4eda4b4d2e336743e4ba4a3f884241a01039e2b833f55bc63775fe470b8405303</citedby><cites>FETCH-LOGICAL-c315t-4eda4b4d2e336743e4ba4a3f884241a01039e2b833f55bc63775fe470b8405303</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1038/369382a0$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1038/369382a0$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=4236317$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>AI-Mamouri, M.</creatorcontrib><creatorcontrib>Edwards, P. P.</creatorcontrib><creatorcontrib>Greaves, C.</creatorcontrib><creatorcontrib>Slaski, M.</creatorcontrib><title>Synthesis and superconducting properties of the strontium copper oxy-fluoride Sr2CuO2F2+δ</title><title>Nature (London)</title><addtitle>Nature</addtitle><description>HIGH-PRESSURE synthesis has proved a useful technique for obtaining new, metastable copper oxide superconductors; for example, oxygen insertion into Sr
2
CuO
3
at 6 GPa (ref. 1) yields superconducting Sr
2
CuO
3
.i, with transition temperature
T
c
= 70 K, in which the superconducting CuO
2
layers are generated by pressure-induced oxygen migration from apical to equatorial sites. Although the simple structure and high transition temperatures make this family (general formula Sr
n+1
Cu
n
O
2n + 1+ δ
) of interest, the stringent synthesis conditions limit its value for applications. Here we report that fluorine insertion into Sr
2
CuO
3
at ambient pressure causes related structural rearrangements to give superconducting Sr
2
CuO
2
F
2 + δ
with a maximum
T
c
of 46 K. In this synthesis, the structural changes previously initiated by the thermodynamic effects of high pressure are induced chemically under ambient conditions. The result is a superconducting oxy-fluoride in which fluorine plays a dominant structural role, rather than merely being an electronic dopant as in La
2
CuO
4
F
x
(ref. 2) and Nd
2
CuO
4−x
F
y
(ref. 3).</description><subject>Chemistry</subject><subject>Copper</subject><subject>Elements and non-metal compounds (oxides, hydroxides, hydrides, sulfides, carbides, ...)</subject><subject>Exact sciences and technology</subject><subject>Humanities and Social Sciences</subject><subject>Inorganic chemistry and origins of life</subject><subject>letter</subject><subject>multidisciplinary</subject><subject>Preparations and properties</subject><subject>Science</subject><subject>Science (multidisciplinary)</subject><subject>Strontium</subject><subject>Superconductivity</subject><issn>0028-0836</issn><issn>1476-4687</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1994</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>BEC</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNplkM1KAzEUhYMoWKvgIwRxochofu5k0qUUq0Khi-rGzZDJJHVKm4zJDNj38jl8JiOtunB14Z6Pc-49CJ1Sck0JlzdcjLhkiuyhAYVCZCBksY8GhDCZEcnFITqKcUkIyWkBA_Qy37ju1cQmYuVqHPvWBO1d3euucQvcBp8WXWMi9hYnEMcueNc1_Rpr3yYN-_dNZle9D01t8DywcT9jE3b1-XGMDqxaRXOym0P0PLl7Gj9k09n94_h2mmlO8y4DUyuooGaGc1EAN1ApUNxKCQyoIumrkWGV5NzmeaUFL4rcGihIJYHknPAhOtv6pmPfehO7cun74FJkyQiAECMYJehiC-ngYwzGlm1o1ipsSkrK7-LKn-ISer7zU1GrlQ3K6Sb-8sC44LRI2OUWi0lxCxP-Yv9ZfgGWR3nt</recordid><startdate>19940602</startdate><enddate>19940602</enddate><creator>AI-Mamouri, M.</creator><creator>Edwards, P. 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P.</au><au>Greaves, C.</au><au>Slaski, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Synthesis and superconducting properties of the strontium copper oxy-fluoride Sr2CuO2F2+δ</atitle><jtitle>Nature (London)</jtitle><stitle>Nature</stitle><date>1994-06-02</date><risdate>1994</risdate><volume>369</volume><issue>6479</issue><spage>382</spage><epage>384</epage><pages>382-384</pages><issn>0028-0836</issn><eissn>1476-4687</eissn><coden>NATUAS</coden><abstract>HIGH-PRESSURE synthesis has proved a useful technique for obtaining new, metastable copper oxide superconductors; for example, oxygen insertion into Sr
2
CuO
3
at 6 GPa (ref. 1) yields superconducting Sr
2
CuO
3
.i, with transition temperature
T
c
= 70 K, in which the superconducting CuO
2
layers are generated by pressure-induced oxygen migration from apical to equatorial sites. Although the simple structure and high transition temperatures make this family (general formula Sr
n+1
Cu
n
O
2n + 1+ δ
) of interest, the stringent synthesis conditions limit its value for applications. Here we report that fluorine insertion into Sr
2
CuO
3
at ambient pressure causes related structural rearrangements to give superconducting Sr
2
CuO
2
F
2 + δ
with a maximum
T
c
of 46 K. In this synthesis, the structural changes previously initiated by the thermodynamic effects of high pressure are induced chemically under ambient conditions. The result is a superconducting oxy-fluoride in which fluorine plays a dominant structural role, rather than merely being an electronic dopant as in La
2
CuO
4
F
x
(ref. 2) and Nd
2
CuO
4−x
F
y
(ref. 3).</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><doi>10.1038/369382a0</doi><tpages>3</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0028-0836 |
| ispartof | Nature (London), 1994-06, Vol.369 (6479), p.382-384 |
| issn | 0028-0836 1476-4687 |
| language | eng |
| recordid | cdi_proquest_journals_204466949 |
| source | Nature Journals Online; SpringerLink Journals - AutoHoldings |
| subjects | Chemistry Copper Elements and non-metal compounds (oxides, hydroxides, hydrides, sulfides, carbides, ...) Exact sciences and technology Humanities and Social Sciences Inorganic chemistry and origins of life letter multidisciplinary Preparations and properties Science Science (multidisciplinary) Strontium Superconductivity |
| title | Synthesis and superconducting properties of the strontium copper oxy-fluoride Sr2CuO2F2+δ |
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