Effect of Oxygen Depletion on the Pinning Properties of Films With Nanoinclusions
Applications of YBa 2 Cu 3 O x (YBCO) coated conductors require strong vortex pinning to ensure a non-dissipative state over a large range of temperatures and magnetic field values. Incorporations of nanoparticles and nanorods have generally resulted in a substantial increase of pinning, but the act...
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| Veröffentlicht in: | IEEE transactions on applied superconductivity 2011-06, Vol.21 (3), p.3218-3221 |
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| container_title | IEEE transactions on applied superconductivity |
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| creator | Cimpoiasu, E Haugan, T J Varanasi, C V Levin, G A Barnes, P N |
| description | Applications of YBa 2 Cu 3 O x (YBCO) coated conductors require strong vortex pinning to ensure a non-dissipative state over a large range of temperatures and magnetic field values. Incorporations of nanoparticles and nanorods have generally resulted in a substantial increase of pinning, but the actual mechanism producing this increase is not fully understood. This report addresses the origin of the enhanced pinning through comparative resistive measurements in the mixed state of thin films of YBCO, YBCO doped with Y 2 O 3 nanoparticles, and YBCO doped with BaSnO 3 nanorods. In order to study the effect of oxygen, all three kinds of samples have been annealed in air at 420°C. We have extracted and compared the resistive irreversibility lines before and after annealing. Our results indicate that while the nanoinclusions in the fully-oxygenated samples improve the pinning strength over that in the pure YBCO sample, the pinning enhancement essentially vanishes upon oxygen depletion. This is true for both pinning structures, nanorods and nanoparticles. |
| doi_str_mv | 10.1109/TASC.2010.2090120 |
| format | Article |
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Incorporations of nanoparticles and nanorods have generally resulted in a substantial increase of pinning, but the actual mechanism producing this increase is not fully understood. This report addresses the origin of the enhanced pinning through comparative resistive measurements in the mixed state of thin films of YBCO, YBCO doped with Y 2 O 3 nanoparticles, and YBCO doped with BaSnO 3 nanorods. In order to study the effect of oxygen, all three kinds of samples have been annealed in air at 420°C. We have extracted and compared the resistive irreversibility lines before and after annealing. Our results indicate that while the nanoinclusions in the fully-oxygenated samples improve the pinning strength over that in the pure YBCO sample, the pinning enhancement essentially vanishes upon oxygen depletion. This is true for both pinning structures, nanorods and nanoparticles.</description><identifier>ISSN: 1051-8223</identifier><identifier>EISSN: 1558-2515</identifier><identifier>DOI: 10.1109/TASC.2010.2090120</identifier><identifier>CODEN: ITASE9</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Anisotropic magnetoresistance ; Critical current density ; Nanoparticles ; pinning ; Shape ; Studies ; Superconducting magnets ; superconductor ; Temperature measurement ; vortex dynamics ; Yttrium barium copper oxide</subject><ispartof>IEEE transactions on applied superconductivity, 2011-06, Vol.21 (3), p.3218-3221</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) Jun 2011</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c894-6fa0a730dbb9d60dc193dfcd23c796275d2490841053da88653c7a8a9655409e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/5638772$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,796,27922,27923,54756</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/5638772$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Cimpoiasu, E</creatorcontrib><creatorcontrib>Haugan, T J</creatorcontrib><creatorcontrib>Varanasi, C V</creatorcontrib><creatorcontrib>Levin, G A</creatorcontrib><creatorcontrib>Barnes, P N</creatorcontrib><title>Effect of Oxygen Depletion on the Pinning Properties of Films With Nanoinclusions</title><title>IEEE transactions on applied superconductivity</title><addtitle>TASC</addtitle><description>Applications of YBa 2 Cu 3 O x (YBCO) coated conductors require strong vortex pinning to ensure a non-dissipative state over a large range of temperatures and magnetic field values. Incorporations of nanoparticles and nanorods have generally resulted in a substantial increase of pinning, but the actual mechanism producing this increase is not fully understood. This report addresses the origin of the enhanced pinning through comparative resistive measurements in the mixed state of thin films of YBCO, YBCO doped with Y 2 O 3 nanoparticles, and YBCO doped with BaSnO 3 nanorods. In order to study the effect of oxygen, all three kinds of samples have been annealed in air at 420°C. We have extracted and compared the resistive irreversibility lines before and after annealing. Our results indicate that while the nanoinclusions in the fully-oxygenated samples improve the pinning strength over that in the pure YBCO sample, the pinning enhancement essentially vanishes upon oxygen depletion. This is true for both pinning structures, nanorods and nanoparticles.</description><subject>Anisotropic magnetoresistance</subject><subject>Critical current density</subject><subject>Nanoparticles</subject><subject>pinning</subject><subject>Shape</subject><subject>Studies</subject><subject>Superconducting magnets</subject><subject>superconductor</subject><subject>Temperature measurement</subject><subject>vortex dynamics</subject><subject>Yttrium barium copper oxide</subject><issn>1051-8223</issn><issn>1558-2515</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kFFLwzAQx4MoOKcfQHwJvndekiZNHsfcVBhu4sDHkLXpltGlM-nAfXtTJsLB3XG__93xR-iewIgQUE-r8edkRCG1FBQQChdoQDiXGeWEX6YaOMkkpewa3cS4AyC5zPkAfUzr2pYdbmu8-DltrMfP9tDYzrUep-i2Fi-d985v8DK0Bxs6Z2NPz1yzj_jLdVv8bnzrfNkcY1LFW3RVmybau788RKvZdDV5zeaLl7fJeJ6VUuWZqA2YgkG1XqtKQFUSxaq6rCgrCyVowSuaK5B5-ptVRkrB08BIowTnOSjLhujxvPYQ2u-jjZ3etcfg00WtCBdCUsgTRM5QGdoYg631Ibi9CSdNQPe-6d433fum_3xLmoezxllr_3kumCwKyn4B-m5oMQ</recordid><startdate>201106</startdate><enddate>201106</enddate><creator>Cimpoiasu, E</creator><creator>Haugan, T J</creator><creator>Varanasi, C V</creator><creator>Levin, G A</creator><creator>Barnes, P N</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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Incorporations of nanoparticles and nanorods have generally resulted in a substantial increase of pinning, but the actual mechanism producing this increase is not fully understood. This report addresses the origin of the enhanced pinning through comparative resistive measurements in the mixed state of thin films of YBCO, YBCO doped with Y 2 O 3 nanoparticles, and YBCO doped with BaSnO 3 nanorods. In order to study the effect of oxygen, all three kinds of samples have been annealed in air at 420°C. We have extracted and compared the resistive irreversibility lines before and after annealing. Our results indicate that while the nanoinclusions in the fully-oxygenated samples improve the pinning strength over that in the pure YBCO sample, the pinning enhancement essentially vanishes upon oxygen depletion. 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| source | IEEE Electronic Library (IEL) |
| subjects | Anisotropic magnetoresistance Critical current density Nanoparticles pinning Shape Studies Superconducting magnets superconductor Temperature measurement vortex dynamics Yttrium barium copper oxide |
| title | Effect of Oxygen Depletion on the Pinning Properties of Films With Nanoinclusions |
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