Superconductivity above 90 K in magnetic rare earth-barium-copper oxides

J. O. Willis; Z. Fisk; J. D. Thompson; S. W. Cheong; R. M. Aikin; J. L. Smith; E. Zirngibl

doi:10.1016/0304-8853(87)90221-6

Superconductivity above 90 K in magnetic rare earth-barium-copper oxides

J. O. Willis
, Z. Fisk
, J. D. Thompson
, S. W. Cheong
, R. M. Aikin
, J. L. Smith
, E. Zirngibl

School of Arts and Sciences, New High Energy Theory Center

Research output: Contribution to journal › Letter › peer-review

113 Scopus citations

Abstract

We report measurements of the superconducting and magnetic behavior of GdBa₂Cu₃O_x. Superconductivity occurs below T_c = 95 and 93 K, respectively, for these compounds with large Meissner effects observed. The Gd-based compound has an upper critical field slope -dH_c2 dT greater than 1.2 T/K. Both compounds exhibit Curie-Weiss behavior above T_c with free-ion effective moments and small, negative temperature intercepts. In addition, the Gd-based compound orders antiferromagnetically below 2.24 K with an entropy consistent with the ordering of seven unpaired spins.

Original language	English (US)
Pages (from-to)	L139-L142
Journal	Journal of Magnetism and Magnetic Materials
Volume	67
Issue number	2
DOIs	https://doi.org/10.1016/0304-8853(87)90221-6
State	Published - Jun 1987

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/0304-8853(87)90221-6

Cite this

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title = "Superconductivity above 90 K in magnetic rare earth-barium-copper oxides",

abstract = "We report measurements of the superconducting and magnetic behavior of GdBa2Cu3Ox. Superconductivity occurs below Tc = 95 and 93 K, respectively, for these compounds with large Meissner effects observed. The Gd-based compound has an upper critical field slope -dHc2 dT greater than 1.2 T/K. Both compounds exhibit Curie-Weiss behavior above Tc with free-ion effective moments and small, negative temperature intercepts. In addition, the Gd-based compound orders antiferromagnetically below 2.24 K with an entropy consistent with the ordering of seven unpaired spins.",

author = "Willis, \{J. O.\} and Z. Fisk and Thompson, \{J. D.\} and Cheong, \{S. W.\} and Aikin, \{R. M.\} and Smith, \{J. L.\} and E. Zirngibl",

year = "1987",

month = jun,

doi = "10.1016/0304-8853(87)90221-6",

language = "English (US)",

volume = "67",

pages = "L139--L142",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Superconductivity above 90 K in magnetic rare earth-barium-copper oxides

AU - Willis, J. O.

AU - Fisk, Z.

AU - Thompson, J. D.

AU - Cheong, S. W.

AU - Aikin, R. M.

AU - Smith, J. L.

AU - Zirngibl, E.

PY - 1987/6

Y1 - 1987/6

N2 - We report measurements of the superconducting and magnetic behavior of GdBa2Cu3Ox. Superconductivity occurs below Tc = 95 and 93 K, respectively, for these compounds with large Meissner effects observed. The Gd-based compound has an upper critical field slope -dHc2 dT greater than 1.2 T/K. Both compounds exhibit Curie-Weiss behavior above Tc with free-ion effective moments and small, negative temperature intercepts. In addition, the Gd-based compound orders antiferromagnetically below 2.24 K with an entropy consistent with the ordering of seven unpaired spins.

AB - We report measurements of the superconducting and magnetic behavior of GdBa2Cu3Ox. Superconductivity occurs below Tc = 95 and 93 K, respectively, for these compounds with large Meissner effects observed. The Gd-based compound has an upper critical field slope -dHc2 dT greater than 1.2 T/K. Both compounds exhibit Curie-Weiss behavior above Tc with free-ion effective moments and small, negative temperature intercepts. In addition, the Gd-based compound orders antiferromagnetically below 2.24 K with an entropy consistent with the ordering of seven unpaired spins.

UR - https://www.scopus.com/pages/publications/0023365365

UR - https://www.scopus.com/pages/publications/0023365365#tab=citedBy

U2 - 10.1016/0304-8853(87)90221-6

DO - 10.1016/0304-8853(87)90221-6

M3 - Letter

AN - SCOPUS:0023365365

SN - 0304-8853

VL - 67

SP - L139-L142

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 2

ER -

Superconductivity above 90 K in magnetic rare earth-barium-copper oxides

Abstract

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