Low-frequency noise in field-cooled, directly coupled magnetometers
We have studied the low-frequency noise properties of high-T/sub c/ directly coupled magnetometers involving dc Superconducting Quantum Interference Devices (SQUIDs) connected to four different types of pickup loop. Two of the pickup loops have a solid-washer design, while the other two comprise str...
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| Veröffentlicht in: | IEEE transactions on applied superconductivity 1999-06, Vol.9 (2), p.3294-3297 |
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| container_title | IEEE transactions on applied superconductivity |
| container_volume | 9 |
| creator | Cho, H.-M. McDermott, R. Oh, B. Kouznetsov, K.A. Kittel, A. Miller, J.H. Clarke, J. |
| description | We have studied the low-frequency noise properties of high-T/sub c/ directly coupled magnetometers involving dc Superconducting Quantum Interference Devices (SQUIDs) connected to four different types of pickup loop. Two of the pickup loops have a solid-washer design, while the other two comprise structures with narrow (4 /spl mu/m) linewidths. The devices were fabricated from YBCO thin films laser deposited on bicrystal substrate. The noise properties of the magnetometers cooled and maintained in static magnetic fields were measured at 77 K. The pickup loop contributes to the 1/f noise of field-cooled devices solely through vortex motion at tapered outer edges; this noise was eliminated by repatterning the edges to make them sharp. We demonstrate that solid-film washers can be replaced with narrow-linewidth structures without any loss in effective area. |
| doi_str_mv | 10.1109/77.783733 |
| format | Article |
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Two of the pickup loops have a solid-washer design, while the other two comprise structures with narrow (4 /spl mu/m) linewidths. The devices were fabricated from YBCO thin films laser deposited on bicrystal substrate. The noise properties of the magnetometers cooled and maintained in static magnetic fields were measured at 77 K. The pickup loop contributes to the 1/f noise of field-cooled devices solely through vortex motion at tapered outer edges; this noise was eliminated by repatterning the edges to make them sharp. We demonstrate that solid-film washers can be replaced with narrow-linewidth structures without any loss in effective area.</description><identifier>ISSN: 1051-8223</identifier><identifier>EISSN: 1558-2515</identifier><identifier>DOI: 10.1109/77.783733</identifier><identifier>CODEN: ITASE9</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>BICRYSTALS ; COPPER OXIDE ; Couplings ; DEPOSITION ; Devices ; ELECTRONIC PRODUCTS ; Exact sciences and technology ; FREQUENCY ; Instruments, apparatus, components and techniques common to several branches of physics and astronomy ; Interference ; Low-frequency noise ; Magnetic components, instruments and techniques ; Magnetic field measurement ; Magnetic noise ; Magnetic properties ; Magnetometers ; Magnetometers for magnetic field measurements ; NOISE ; Physics ; SQUID magnetometers ; SQUIDs ; Superconducting device noise ; Superconducting devices ; Superconducting quantum interference devices ; SUPERCONDUCTIVITY ; SUPERCONDUCTORS ; THIN FILMS ; Washers ; Yttrium barium copper oxide ; YTTRIUM OXIDE</subject><ispartof>IEEE transactions on applied superconductivity, 1999-06, Vol.9 (2), p.3294-3297</ispartof><rights>1999 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c369t-8405c483f3599827d81e66e5bf99b0400863a1c9dfe1d149c1de8fbf42346973</citedby><cites>FETCH-LOGICAL-c369t-8405c483f3599827d81e66e5bf99b0400863a1c9dfe1d149c1de8fbf42346973</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/783733$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>309,310,314,780,784,789,790,796,23930,23931,25140,27924,27925,54758</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/783733$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=1945444$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Cho, H.-M.</creatorcontrib><creatorcontrib>McDermott, R.</creatorcontrib><creatorcontrib>Oh, B.</creatorcontrib><creatorcontrib>Kouznetsov, K.A.</creatorcontrib><creatorcontrib>Kittel, A.</creatorcontrib><creatorcontrib>Miller, J.H.</creatorcontrib><creatorcontrib>Clarke, J.</creatorcontrib><title>Low-frequency noise in field-cooled, directly coupled magnetometers</title><title>IEEE transactions on applied superconductivity</title><addtitle>TASC</addtitle><description>We have studied the low-frequency noise properties of high-T/sub c/ directly coupled magnetometers involving dc Superconducting Quantum Interference Devices (SQUIDs) connected to four different types of pickup loop. Two of the pickup loops have a solid-washer design, while the other two comprise structures with narrow (4 /spl mu/m) linewidths. The devices were fabricated from YBCO thin films laser deposited on bicrystal substrate. The noise properties of the magnetometers cooled and maintained in static magnetic fields were measured at 77 K. The pickup loop contributes to the 1/f noise of field-cooled devices solely through vortex motion at tapered outer edges; this noise was eliminated by repatterning the edges to make them sharp. We demonstrate that solid-film washers can be replaced with narrow-linewidth structures without any loss in effective area.</description><subject>BICRYSTALS</subject><subject>COPPER OXIDE</subject><subject>Couplings</subject><subject>DEPOSITION</subject><subject>Devices</subject><subject>ELECTRONIC PRODUCTS</subject><subject>Exact sciences and technology</subject><subject>FREQUENCY</subject><subject>Instruments, apparatus, components and techniques common to several branches of physics and astronomy</subject><subject>Interference</subject><subject>Low-frequency noise</subject><subject>Magnetic components, instruments and techniques</subject><subject>Magnetic field measurement</subject><subject>Magnetic noise</subject><subject>Magnetic properties</subject><subject>Magnetometers</subject><subject>Magnetometers for magnetic field measurements</subject><subject>NOISE</subject><subject>Physics</subject><subject>SQUID magnetometers</subject><subject>SQUIDs</subject><subject>Superconducting device noise</subject><subject>Superconducting devices</subject><subject>Superconducting quantum interference devices</subject><subject>SUPERCONDUCTIVITY</subject><subject>SUPERCONDUCTORS</subject><subject>THIN FILMS</subject><subject>Washers</subject><subject>Yttrium barium copper oxide</subject><subject>YTTRIUM OXIDE</subject><issn>1051-8223</issn><issn>1558-2515</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1999</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNqF0EtLxDAQB_AgCq6rB6-eehBFsGvej6MsvqDgZe8lm04k0jZr0kX221vpojc9Zcj85s8wCJ0TvCAEmzulFkozxdgBmhEhdEkFEYdjjQUpNaXsGJ3k_I4x4ZqLGVpW8bP0CT620Ltd0ceQoQh94QO0TelibKG5LZqQwA3trnBxuxl_is6-9TDEDgZI-RQdedtmONu_c7R6fFgtn8vq9elleV-VjkkzlJpj4bhmngljNFWNJiAliLU3Zo05xloyS5xpPJCGcONIA9qvPaeMS6PYHF1PsZsUx3XzUHchO2hb20Pc5toQY4ikmo7y6k9JNdMSC_E_lMZQKvAIbyboUsw5ga83KXQ27WqC6-_D10rV0-FHe7kPtdnZ1ifbu5B_BwwXnPORXUwsAMBPd5_xBYAliPY</recordid><startdate>19990601</startdate><enddate>19990601</enddate><creator>Cho, H.-M.</creator><creator>McDermott, R.</creator><creator>Oh, B.</creator><creator>Kouznetsov, K.A.</creator><creator>Kittel, A.</creator><creator>Miller, J.H.</creator><creator>Clarke, J.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><scope>RIA</scope><scope>RIE</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><scope>7QQ</scope><scope>7SP</scope><scope>F28</scope><scope>FR3</scope><scope>H8G</scope><scope>JG9</scope></search><sort><creationdate>19990601</creationdate><title>Low-frequency noise in field-cooled, directly coupled magnetometers</title><author>Cho, H.-M. ; McDermott, R. ; Oh, B. ; Kouznetsov, K.A. ; Kittel, A. ; Miller, J.H. ; Clarke, J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c369t-8405c483f3599827d81e66e5bf99b0400863a1c9dfe1d149c1de8fbf42346973</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1999</creationdate><topic>BICRYSTALS</topic><topic>COPPER OXIDE</topic><topic>Couplings</topic><topic>DEPOSITION</topic><topic>Devices</topic><topic>ELECTRONIC PRODUCTS</topic><topic>Exact sciences and technology</topic><topic>FREQUENCY</topic><topic>Instruments, apparatus, components and techniques common to several branches of physics and astronomy</topic><topic>Interference</topic><topic>Low-frequency noise</topic><topic>Magnetic components, instruments and techniques</topic><topic>Magnetic field measurement</topic><topic>Magnetic noise</topic><topic>Magnetic properties</topic><topic>Magnetometers</topic><topic>Magnetometers for magnetic field measurements</topic><topic>NOISE</topic><topic>Physics</topic><topic>SQUID magnetometers</topic><topic>SQUIDs</topic><topic>Superconducting device noise</topic><topic>Superconducting devices</topic><topic>Superconducting quantum interference devices</topic><topic>SUPERCONDUCTIVITY</topic><topic>SUPERCONDUCTORS</topic><topic>THIN FILMS</topic><topic>Washers</topic><topic>Yttrium barium copper oxide</topic><topic>YTTRIUM OXIDE</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Cho, H.-M.</creatorcontrib><creatorcontrib>McDermott, R.</creatorcontrib><creatorcontrib>Oh, B.</creatorcontrib><creatorcontrib>Kouznetsov, K.A.</creatorcontrib><creatorcontrib>Kittel, A.</creatorcontrib><creatorcontrib>Miller, J.H.</creatorcontrib><creatorcontrib>Clarke, J.</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Ceramic Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Copper Technical Reference Library</collection><collection>Materials Research Database</collection><jtitle>IEEE transactions on applied superconductivity</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Cho, H.-M.</au><au>McDermott, R.</au><au>Oh, B.</au><au>Kouznetsov, K.A.</au><au>Kittel, A.</au><au>Miller, J.H.</au><au>Clarke, J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Low-frequency noise in field-cooled, directly coupled magnetometers</atitle><jtitle>IEEE transactions on applied superconductivity</jtitle><stitle>TASC</stitle><date>1999-06-01</date><risdate>1999</risdate><volume>9</volume><issue>2</issue><spage>3294</spage><epage>3297</epage><pages>3294-3297</pages><issn>1051-8223</issn><eissn>1558-2515</eissn><coden>ITASE9</coden><abstract>We have studied the low-frequency noise properties of high-T/sub c/ directly coupled magnetometers involving dc Superconducting Quantum Interference Devices (SQUIDs) connected to four different types of pickup loop. Two of the pickup loops have a solid-washer design, while the other two comprise structures with narrow (4 /spl mu/m) linewidths. The devices were fabricated from YBCO thin films laser deposited on bicrystal substrate. The noise properties of the magnetometers cooled and maintained in static magnetic fields were measured at 77 K. The pickup loop contributes to the 1/f noise of field-cooled devices solely through vortex motion at tapered outer edges; this noise was eliminated by repatterning the edges to make them sharp. We demonstrate that solid-film washers can be replaced with narrow-linewidth structures without any loss in effective area.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/77.783733</doi><tpages>4</tpages></addata></record> |
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| source | IEEE Electronic Library (IEL) |
| subjects | BICRYSTALS COPPER OXIDE Couplings DEPOSITION Devices ELECTRONIC PRODUCTS Exact sciences and technology FREQUENCY Instruments, apparatus, components and techniques common to several branches of physics and astronomy Interference Low-frequency noise Magnetic components, instruments and techniques Magnetic field measurement Magnetic noise Magnetic properties Magnetometers Magnetometers for magnetic field measurements NOISE Physics SQUID magnetometers SQUIDs Superconducting device noise Superconducting devices Superconducting quantum interference devices SUPERCONDUCTIVITY SUPERCONDUCTORS THIN FILMS Washers Yttrium barium copper oxide YTTRIUM OXIDE |
| title | Low-frequency noise in field-cooled, directly coupled magnetometers |
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