Upper critical fields of the 40 K- and 90 K- superconductors, Sr-La-Cu-O and Ba-Y-Cu-O
Superconducting transitions and the upper critical fields, H c2 of 40 K- and 90 K-superconductors, Sr x La 2- x CuO 4- y ( x =0.6, y ∼1) and Ba x Y 1- x CuO 3- y ( x =0.6) in ceramic forms, were studied by resistivity measurement. The onset of superconductivity of the former (latter) was 43 K(93 K),...
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| Veröffentlicht in: | Japanese Journal of Applied Physics 1987-04, Vol.26 (4), p.L473-L475 |
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| container_end_page | L475 |
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| container_issue | 4 |
| container_start_page | L473 |
| container_title | Japanese Journal of Applied Physics |
| container_volume | 26 |
| creator | MURATA, K IHARA, H TOKUMOTO, M HIRABAYASHI, M TERADA, N SENZAKI, K KIMURA, Y |
| description | Superconducting transitions and the upper critical fields,
H
c2
of 40 K- and 90 K-superconductors, Sr
x
La
2-
x
CuO
4-
y
(
x
=0.6,
y
∼1) and Ba
x
Y
1-
x
CuO
3-
y
(
x
=0.6) in ceramic forms, were studied by resistivity measurement. The onset of superconductivity of the former (latter) was 43 K(93 K), and the midpoint was 35 K(89 K). The slopes, -d
H
c2
/d
T
were 1.48 T/K at the onst, and 0.92 T/K(1.79 T/K) at the midpoints. The Ginzburg-Landau coherence length, ζ
GL
, at 0 K is estimted to be 23 A (onset points) and 32 A (midpoints) for the former, and 14 A (midpoints) for the latter. The value of 14 A is close to lattice constant, 12 A.
H
c2
(
T
=0 K) is discussed in relation to the small value of ζ
GL
. Two-step transition was observed. |
| doi_str_mv | 10.1143/jjap.26.l473 |
| format | Article |
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H
c2
of 40 K- and 90 K-superconductors, Sr
x
La
2-
x
CuO
4-
y
(
x
=0.6,
y
∼1) and Ba
x
Y
1-
x
CuO
3-
y
(
x
=0.6) in ceramic forms, were studied by resistivity measurement. The onset of superconductivity of the former (latter) was 43 K(93 K), and the midpoint was 35 K(89 K). The slopes, -d
H
c2
/d
T
were 1.48 T/K at the onst, and 0.92 T/K(1.79 T/K) at the midpoints. The Ginzburg-Landau coherence length, ζ
GL
, at 0 K is estimted to be 23 A (onset points) and 32 A (midpoints) for the former, and 14 A (midpoints) for the latter. The value of 14 A is close to lattice constant, 12 A.
H
c2
(
T
=0 K) is discussed in relation to the small value of ζ
GL
. Two-step transition was observed.</description><identifier>ISSN: 0021-4922</identifier><identifier>EISSN: 1347-4065</identifier><identifier>DOI: 10.1143/jjap.26.l473</identifier><identifier>CODEN: JJAPA5</identifier><language>eng</language><publisher>Tokyo: Japanese journal of applied physics</publisher><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Exact sciences and technology ; Physics ; Properties of type I and type II superconductors ; Superconductivity</subject><ispartof>Japanese Journal of Applied Physics, 1987-04, Vol.26 (4), p.L473-L475</ispartof><rights>1988 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c272t-6d0e9a55272846a746efea810179b5b24a98f439a30e0e4939f826207bd7e73e3</citedby><cites>FETCH-LOGICAL-c272t-6d0e9a55272846a746efea810179b5b24a98f439a30e0e4939f826207bd7e73e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=7527193$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>MURATA, K</creatorcontrib><creatorcontrib>IHARA, H</creatorcontrib><creatorcontrib>TOKUMOTO, M</creatorcontrib><creatorcontrib>HIRABAYASHI, M</creatorcontrib><creatorcontrib>TERADA, N</creatorcontrib><creatorcontrib>SENZAKI, K</creatorcontrib><creatorcontrib>KIMURA, Y</creatorcontrib><title>Upper critical fields of the 40 K- and 90 K- superconductors, Sr-La-Cu-O and Ba-Y-Cu-O</title><title>Japanese Journal of Applied Physics</title><description>Superconducting transitions and the upper critical fields,
H
c2
of 40 K- and 90 K-superconductors, Sr
x
La
2-
x
CuO
4-
y
(
x
=0.6,
y
∼1) and Ba
x
Y
1-
x
CuO
3-
y
(
x
=0.6) in ceramic forms, were studied by resistivity measurement. The onset of superconductivity of the former (latter) was 43 K(93 K), and the midpoint was 35 K(89 K). The slopes, -d
H
c2
/d
T
were 1.48 T/K at the onst, and 0.92 T/K(1.79 T/K) at the midpoints. The Ginzburg-Landau coherence length, ζ
GL
, at 0 K is estimted to be 23 A (onset points) and 32 A (midpoints) for the former, and 14 A (midpoints) for the latter. The value of 14 A is close to lattice constant, 12 A.
H
c2
(
T
=0 K) is discussed in relation to the small value of ζ
GL
. Two-step transition was observed.</description><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Exact sciences and technology</subject><subject>Physics</subject><subject>Properties of type I and type II superconductors</subject><subject>Superconductivity</subject><issn>0021-4922</issn><issn>1347-4065</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1987</creationdate><recordtype>article</recordtype><recordid>eNo9kE1PwzAMhiMEEmNw4wfkwHEZ-WrSHMfEgFFpSDAkTpWbJqJTWaukO_DvCR3iZD_SY8t-EbpmdM6YFLe7HfRzruat1OIETZiQmkiqslM0oZQzIg3n5-gixl1ClUk2Qe_bvncB29AMjYUW-8a1dcSdx8Onw5LiZ4JhX2MzdvGQZNvt64MduhBn-DWQAsjyQDajdQfkY6RLdOahje7qr07RdnX_tnwkxebhabkoiOWaD0TV1BnIsgS5VKClct5BzijTpsoqLsHkXgoDgjrqpBHG51xxqqtaOy2cmKLZca8NXYzB-bIPzReE75LR8jeTcr1evJRclUXKJOk3R72HmL71Afa2if8zOh3CjBA_2q9deQ</recordid><startdate>19870401</startdate><enddate>19870401</enddate><creator>MURATA, K</creator><creator>IHARA, H</creator><creator>TOKUMOTO, M</creator><creator>HIRABAYASHI, M</creator><creator>TERADA, N</creator><creator>SENZAKI, K</creator><creator>KIMURA, Y</creator><general>Japanese journal of applied physics</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>19870401</creationdate><title>Upper critical fields of the 40 K- and 90 K- superconductors, Sr-La-Cu-O and Ba-Y-Cu-O</title><author>MURATA, K ; IHARA, H ; TOKUMOTO, M ; HIRABAYASHI, M ; TERADA, N ; SENZAKI, K ; KIMURA, Y</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c272t-6d0e9a55272846a746efea810179b5b24a98f439a30e0e4939f826207bd7e73e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1987</creationdate><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Exact sciences and technology</topic><topic>Physics</topic><topic>Properties of type I and type II superconductors</topic><topic>Superconductivity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>MURATA, K</creatorcontrib><creatorcontrib>IHARA, H</creatorcontrib><creatorcontrib>TOKUMOTO, M</creatorcontrib><creatorcontrib>HIRABAYASHI, M</creatorcontrib><creatorcontrib>TERADA, N</creatorcontrib><creatorcontrib>SENZAKI, K</creatorcontrib><creatorcontrib>KIMURA, Y</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Japanese Journal of Applied Physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>MURATA, K</au><au>IHARA, H</au><au>TOKUMOTO, M</au><au>HIRABAYASHI, M</au><au>TERADA, N</au><au>SENZAKI, K</au><au>KIMURA, Y</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Upper critical fields of the 40 K- and 90 K- superconductors, Sr-La-Cu-O and Ba-Y-Cu-O</atitle><jtitle>Japanese Journal of Applied Physics</jtitle><date>1987-04-01</date><risdate>1987</risdate><volume>26</volume><issue>4</issue><spage>L473</spage><epage>L475</epage><pages>L473-L475</pages><issn>0021-4922</issn><eissn>1347-4065</eissn><coden>JJAPA5</coden><abstract>Superconducting transitions and the upper critical fields,
H
c2
of 40 K- and 90 K-superconductors, Sr
x
La
2-
x
CuO
4-
y
(
x
=0.6,
y
∼1) and Ba
x
Y
1-
x
CuO
3-
y
(
x
=0.6) in ceramic forms, were studied by resistivity measurement. The onset of superconductivity of the former (latter) was 43 K(93 K), and the midpoint was 35 K(89 K). The slopes, -d
H
c2
/d
T
were 1.48 T/K at the onst, and 0.92 T/K(1.79 T/K) at the midpoints. The Ginzburg-Landau coherence length, ζ
GL
, at 0 K is estimted to be 23 A (onset points) and 32 A (midpoints) for the former, and 14 A (midpoints) for the latter. The value of 14 A is close to lattice constant, 12 A.
H
c2
(
T
=0 K) is discussed in relation to the small value of ζ
GL
. Two-step transition was observed.</abstract><cop>Tokyo</cop><pub>Japanese journal of applied physics</pub><doi>10.1143/jjap.26.l473</doi></addata></record> |
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| ispartof | Japanese Journal of Applied Physics, 1987-04, Vol.26 (4), p.L473-L475 |
| issn | 0021-4922 1347-4065 |
| language | eng |
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| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Physics Properties of type I and type II superconductors Superconductivity |
| title | Upper critical fields of the 40 K- and 90 K- superconductors, Sr-La-Cu-O and Ba-Y-Cu-O |
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