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DESCRIPTION:Joint Technical Seminar of IEEE Tallahassee Section and FAMU-FS
 U College of Engineering\n\nTitle: REBCO-based conductors for large-scale 
 HTS applications: Exploring limits of performance in coated conductors\n\n
 Presenter: Dr. Amit Goyal\, Professor\, SUNY at Buffalo\, Member\, Nationa
 l Academy of Engineering\n\nTime: 3:00 pm - 4:30 pm\, Thursday\, June 27\,
  2024\n\nLocation: Room 120\, Center for Advanced Power Systems\, 2000 Lev
 y Avenue\, Tallahassee\, Fl 32310\n\nRefreshments will be served\n\nAbstra
 ct\n\nCurrent status related to commercialization of three platform techno
 logies will be discussed: (1) Rolling-Assisted-Biaxially-Textured Substrat
 es\; (2) LMOe-enabled IBAD MgO Substrates technology\, for fabrication of 
 kilometer-long HTS wires and (3) Phase Separation and Strain-driven Self-A
 ssembly technology for creating controlled nanostructures in high-performa
 nce\, kilometer-long wires. A majority of companies world-wide use one or 
 more of these technologies for fabricating kilometer-long\, high-performan
 ce\, single-crystal-like HTS wires. However\, the price/performance metric
  of coated conductors is not yet favorable for most large-scale applicatio
 ns. A key route to making the price/performance metric of HTS wires more f
 avorable is to significantly enhance the critical current density\, Jc (H\
 ,T) of coated conductors.\n\nEngineered nanoscale defects within REBa2Cu3O
 7-δ (REBCO) based coated conductors are of great interest for enhancing t
 he performance via vortex-pinning\, especially in high-applied magnetic fi
 elds. We have previously reported excellent Jc’s and flux-pinning in YBC
 O films with self-assembled BZO columnar defects in the entire operating t
 emperature regime from 4.2K-77K via correlated pinning from extended defec
 ts at mid to higher operating temperatures as well as collective pinning f
 rom oxygen point defects arising due to the local strain near YBCO/BZO int
 erfaces at lower operating temperatures. We will report on our recent work
  to probe the limits of critical current density possible via defect engin
 eering. We have obtained record values of critical current density\, Jc\, 
 and pinning force\, Fp\, in REBCO coated conductors with self-assembled BZ
 O nanocolumns fabricated using pulsed laser ablation. A Jc of ~ 190 MA/cm2
  at 4.2K\, self-field and ~ 90 MA/cm2\, at 4.2K\, 7T was measured. At 20K\
 , Jc of over 150 MA/cm2 at self-field and over 60 MA/cm2 at 7T was observe
 d. A very high pinning force\, Fp\, of ~ 6.4 TN/m3 and ~ 4.2 TN/m3 were ob
 served at 7T\, 4.2K and 7T\, 20K respectively. These are the highest value
 s of Jc and Fp reported to date. These results establish that significant 
 performance enhancements are still possible and hence the associated reduc
 tion in costs that could potentially be realized in optimized\, commercial
  HTS wires. In addition\, we have experimentally confirmed the effect of l
 ocal micro-strain resulting in oxygen point defects due to the large latti
 ce-misfit between REBCO and BZO as well as the effect of Ca-doping in REBC
 O coated conductors to mitigate the microstrain. These results can help gu
 ide industry towards realizing significantly higher performance in commerc
 ial coated conductors or HTS wires.\n\nSpeaker(s): \, Prof. Amit Goyal\n\n
 Room: 120\, Bldg: A\, 2000 Levy Ave. \, Tallahassee\, Florida\, United Sta
 tes\, 32310
LOCATION:Room: 120\, Bldg: A\, 2000 Levy Ave. \, Tallahassee\, Florida\, Un
 ited States\, 32310
ORGANIZER:ckim@caps.fsu.edu
SEQUENCE:11
SUMMARY:REBCO-based conductors for large-scale HTS applications: Exploring 
 limits of performance in coated conductors 
URL;VALUE=URI:https://events.vtools.ieee.org/m/424481
X-ALT-DESC:Description: &lt;br /&gt;&lt;p class=&quot;MsoNormal&quot; style=&quot;text-align: cente
 r\;&quot; align=&quot;center&quot;&gt;&lt;strong&gt;Joint Technical Seminar of IEEE Tallahassee Se
 ction and FAMU-FSU College of Engineering&lt;/strong&gt;&lt;/p&gt;\n&lt;p class=&quot;MsoNorma
 l&quot; style=&quot;margin-bottom: 0in\;&quot;&gt;&lt;strong&gt;&lt;span style=&quot;font-size: 10.0pt\; l
 ine-height: 107%\;&quot;&gt;Title: &lt;/span&gt;REBCO-based conductors for large-scale H
 TS applications: &lt;em&gt;Exploring limits of performance in coated conductors&lt;
 /em&gt; &lt;/strong&gt;&lt;/p&gt;\n&lt;p class=&quot;MsoNormal&quot; style=&quot;margin-bottom: 0in\;&quot;&gt;&lt;str
 ong&gt;&lt;span style=&quot;font-size: 10.0pt\; line-height: 107%\;&quot;&gt;Presenter: Dr. A
 mit Goyal\, Professor\, &lt;/span&gt;&lt;span style=&quot;color: black\;&quot;&gt;SUNY at Buffal
 o\, &lt;em&gt;Member\, National Academy of Engineering &lt;/em&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/p&gt;
 \n&lt;p class=&quot;MsoNormal&quot; style=&quot;margin-bottom: 0in\; line-height: normal\;&quot;&gt;
 &lt;strong&gt;&lt;span style=&quot;font-size: 10.0pt\;&quot;&gt;Time: 3:00 pm - 4:30 pm\, Thursd
 ay\, June 27\, 2024&lt;/span&gt;&lt;/strong&gt;&lt;/p&gt;\n&lt;p class=&quot;MsoNormal&quot; style=&quot;margi
 n-bottom: 0in\; line-height: normal\;&quot;&gt;&lt;strong&gt;&lt;span style=&quot;font-size: 10.
 0pt\;&quot;&gt;Location: Room 120\, Center for Advanced Power Systems\, 2000 Levy 
 Avenue\, Tallahassee\, Fl 32310&lt;/span&gt;&lt;/strong&gt;&lt;/p&gt;\n&lt;p class=&quot;MsoNormal&quot; 
 style=&quot;margin-bottom: 0in\; text-align: justify\; line-height: 115%\; mso-
 layout-grid-align: none\; text-autospace: none\;&quot;&gt;&lt;strong&gt;&lt;em&gt;&lt;u&gt;&lt;span sty
 le=&quot;font-size: 10.0pt\; line-height: 115%\; mso-bidi-font-family: Calibri\
 ; mso-bidi-theme-font: minor-latin\; color: red\;&quot;&gt;Refreshments will be se
 rved&lt;/span&gt;&lt;/u&gt;&lt;/em&gt;&lt;/strong&gt;&lt;/p&gt;\n&lt;p class=&quot;MsoNormal&quot; style=&quot;margin-bott
 om: 0in\; text-align: justify\; line-height: 115%\; mso-layout-grid-align:
  none\; text-autospace: none\;&quot;&gt;&lt;strong&gt;&lt;u&gt;&lt;span style=&quot;font-size: 10.0pt\
 ; line-height: 115%\; mso-bidi-font-family: Calibri\; mso-bidi-theme-font:
  minor-latin\;&quot;&gt;Abstract&lt;/span&gt;&lt;/u&gt;&lt;/strong&gt;&lt;/p&gt;\n&lt;p class=&quot;MsoNormal&quot; sty
 le=&quot;margin-bottom: 0in\; text-align: justify\;&quot;&gt;&lt;span style=&quot;font-size: 10
 .0pt\; line-height: 107%\;&quot;&gt;Current status related to commercialization of
  three platform technologies will be discussed: (1) Rolling-Assisted-Biaxi
 ally-Textured Substrates\; (2) LMOe-enabled IBAD MgO Substrates technology
 \, for fabrication of kilometer-long HTS wires and (3) Phase Separation an
 d Strain-driven Self-Assembly technology for creating controlled nanostruc
 tures in high-performance\, kilometer-long wires.&lt;span style=&quot;mso-spacerun
 : yes\;&quot;&gt;&amp;nbsp\; &lt;/span&gt;A majority of companies world-wide use one or more
  of these technologies for fabricating kilometer-long\, high-performance\,
  single-crystal-like HTS wires.&lt;span style=&quot;mso-spacerun: yes\;&quot;&gt;&amp;nbsp\; &lt;
 /span&gt;However\, the price/performance metric of coated conductors is not y
 et favorable for most large-scale applications.&lt;span style=&quot;mso-spacerun: 
 yes\;&quot;&gt;&amp;nbsp\; &lt;/span&gt;A key route to making the price/performance metric o
 f HTS wires more favorable is to significantly enhance the critical curren
 t density\, J&lt;sub&gt;c&lt;/sub&gt; (H\,T) of coated conductors.&lt;/span&gt;&lt;/p&gt;\n&lt;p clas
 s=&quot;MsoNormal&quot; style=&quot;margin-right: -4.5pt\; text-align: justify\;&quot;&gt;&lt;span s
 tyle=&quot;font-size: 10.0pt\; line-height: 107%\;&quot;&gt;Engineered nanoscale defect
 s within REBa&lt;sub&gt;2&lt;/sub&gt;Cu&lt;sub&gt;3&lt;/sub&gt;O&lt;sub&gt;7-&amp;delta\;&lt;/sub&gt; (REBCO) base
 d coated conductors are of great interest for enhancing the performance vi
 a vortex-pinning\, especially in high-applied magnetic fields.&lt;span style=
 &quot;mso-spacerun: yes\;&quot;&gt;&amp;nbsp\; &lt;/span&gt;We have previously reported excellent
  J&lt;sub&gt;c&lt;/sub&gt;&amp;rsquo\;s and flux-pinning in YBCO films with self-assembled
  BZO columnar defects in the entire operating temperature regime from 4.2K
 -77K via correlated pinning from extended defects at mid to higher operati
 ng temperatures as well as collective pinning from oxygen point defects ar
 ising due to the local strain near YBCO/BZO interfaces at lower operating 
 temperatures.&lt;span style=&quot;mso-spacerun: yes\;&quot;&gt;&amp;nbsp\; &lt;/span&gt;We will repo
 rt on our recent work to probe the limits of critical current density poss
 ible via defect engineering.&lt;span style=&quot;mso-spacerun: yes\;&quot;&gt;&amp;nbsp\; &lt;/sp
 an&gt;We have obtained record values of critical current density\, &lt;em&gt;J&lt;sub&gt;
 c&lt;/sub&gt;&lt;/em&gt;\, and pinning force\, &lt;em&gt;F&lt;sub&gt;p&lt;/sub&gt;&lt;/em&gt;\, in REBCO coate
 d conductors with self-assembled BZO nanocolumns fabricated using pulsed l
 aser ablation.&lt;span style=&quot;mso-spacerun: yes\;&quot;&gt;&amp;nbsp\; &lt;/span&gt;A &lt;em&gt;J&lt;sub
 &gt;c&lt;/sub&gt; &lt;/em&gt;of ~ 190 MA/cm&lt;sup&gt;2&lt;/sup&gt; at 4.2K\, self-field and ~ 90 MA/
 cm&lt;sup&gt;2&lt;/sup&gt;\, at 4.2K\, 7T was measured.&lt;span style=&quot;mso-spacerun: yes\
 ;&quot;&gt;&amp;nbsp\; &lt;/span&gt;At 20K\, &lt;em&gt;J&lt;sub&gt;c&lt;/sub&gt;&lt;/em&gt;&lt;sub&gt; &lt;/sub&gt;of over 150 M
 A/cm&lt;sup&gt;2&lt;/sup&gt; at self-field and over 60 MA/cm&lt;sup&gt;2&lt;/sup&gt; at 7T was obs
 erved.&lt;span style=&quot;mso-spacerun: yes\;&quot;&gt;&amp;nbsp\; &lt;/span&gt;A very high pinning
  force\, &lt;em&gt;F&lt;sub&gt;p&lt;/sub&gt;&lt;/em&gt;\, of ~ 6.4 TN/m&lt;sup&gt;3 &lt;/sup&gt;and ~ 4.2 TN/m
 &lt;sup&gt;3&lt;/sup&gt; were observed at 7T\, 4.2K and 7T\, 20K respectively.&lt;span st
 yle=&quot;mso-spacerun: yes\;&quot;&gt;&amp;nbsp\; &lt;/span&gt;These are the highest values of &lt;
 em&gt;J&lt;sub&gt;c&lt;/sub&gt;&lt;/em&gt;&lt;sub&gt; &lt;/sub&gt;and &lt;em&gt;F&lt;sub&gt;p&lt;/sub&gt;&lt;/em&gt; reported to da
 te.&lt;span style=&quot;mso-spacerun: yes\;&quot;&gt;&amp;nbsp\; &lt;/span&gt;These results establis
 h that significant performance enhancements are still possible and hence t
 he associated reduction in costs that could potentially be realized in opt
 imized\, commercial HTS wires.&lt;span style=&quot;mso-spacerun: yes\;&quot;&gt;&amp;nbsp\; &lt;/
 span&gt;In addition\, we have experimentally confirmed the effect of local mi
 cro-strain resulting in oxygen point defects due to the large lattice-misf
 it between REBCO and BZO as well as the effect of Ca-doping in REBCO coate
 d conductors to mitigate the microstrain.&lt;span style=&quot;mso-spacerun: yes\;&quot;
 &gt;&amp;nbsp\; &lt;/span&gt;These results can help guide industry towards realizing si
 gnificantly higher performance in commercial coated conductors or HTS wire
 s.&lt;/span&gt;&lt;/p&gt;
END:VEVENT
END:VCALENDAR