Magneto-microwave absorption study of flux depinning in Hg0.7Pb0.3Ba2Ca2Cu3O8 superconductor

Frank J. Owens; A. G. Rinzler; Z. Iqbal

doi:10.1016/0921-4534(94)00588-5

Magneto-microwave absorption study of flux depinning in Hg_0.7Pb_0.3Ba₂Ca₂Cu₃O₈ superconductor

Frank J. Owens, A. G. Rinzler, Z. Iqbal

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

6 Scopus citations

Abstract

The microwave absorption in the superconducting state of single-phase Hg_0.7Pb_0.3Ba₂Ca₂Cu₃O_8+x havi ng a T_c of 133 K is shown to depend linearly on the square root of the DC magnetic field strength with a change of slope occuring at a DC magnetic field B^* which corresponds to an onset of an irreversibility in the field dependence of the microwave absorption. A measurement of the temperature dependence of B^* enables a determination of an H-T irreversibility line at 9.2 GHz. A comparison of the magnetic-field-induced dissipation with that the Y-Ba-Cu-O indicates that the Hg-Pb-Ba-Ca-Cu-O material has a larger pinning barrier to flux detrapping at 77 K.

Original language	English (US)
Pages (from-to)	30-34
Number of pages	5
Journal	Physica C: Superconductivity and its Applications
Volume	233
Issue number	1-2
DOIs	https://doi.org/10.1016/0921-4534(94)00588-5
State	Published - Nov 10 1994
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/0921-4534(94)00588-5

Cite this

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title = "Magneto-microwave absorption study of flux depinning in Hg0.7Pb0.3Ba2Ca2Cu3O8 superconductor",

abstract = "The microwave absorption in the superconducting state of single-phase Hg0.7Pb0.3Ba2Ca2Cu3O8+x havi ng a Tc of 133 K is shown to depend linearly on the square root of the DC magnetic field strength with a change of slope occuring at a DC magnetic field B* which corresponds to an onset of an irreversibility in the field dependence of the microwave absorption. A measurement of the temperature dependence of B* enables a determination of an H-T irreversibility line at 9.2 GHz. A comparison of the magnetic-field-induced dissipation with that the Y-Ba-Cu-O indicates that the Hg-Pb-Ba-Ca-Cu-O material has a larger pinning barrier to flux detrapping at 77 K.",

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T1 - Magneto-microwave absorption study of flux depinning in Hg0.7Pb0.3Ba2Ca2Cu3O8 superconductor

AU - Owens, Frank J.

AU - Rinzler, A. G.

AU - Iqbal, Z.

PY - 1994/11/10

Y1 - 1994/11/10

N2 - The microwave absorption in the superconducting state of single-phase Hg0.7Pb0.3Ba2Ca2Cu3O8+x havi ng a Tc of 133 K is shown to depend linearly on the square root of the DC magnetic field strength with a change of slope occuring at a DC magnetic field B* which corresponds to an onset of an irreversibility in the field dependence of the microwave absorption. A measurement of the temperature dependence of B* enables a determination of an H-T irreversibility line at 9.2 GHz. A comparison of the magnetic-field-induced dissipation with that the Y-Ba-Cu-O indicates that the Hg-Pb-Ba-Ca-Cu-O material has a larger pinning barrier to flux detrapping at 77 K.

AB - The microwave absorption in the superconducting state of single-phase Hg0.7Pb0.3Ba2Ca2Cu3O8+x havi ng a Tc of 133 K is shown to depend linearly on the square root of the DC magnetic field strength with a change of slope occuring at a DC magnetic field B* which corresponds to an onset of an irreversibility in the field dependence of the microwave absorption. A measurement of the temperature dependence of B* enables a determination of an H-T irreversibility line at 9.2 GHz. A comparison of the magnetic-field-induced dissipation with that the Y-Ba-Cu-O indicates that the Hg-Pb-Ba-Ca-Cu-O material has a larger pinning barrier to flux detrapping at 77 K.

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Magneto-microwave absorption study of flux depinning in Hg_0.7Pb_0.3Ba₂Ca₂Cu₃O₈ superconductor

Abstract

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