Surface Resistance of Bi2Sr2Ca1Cu2Oy Strip Lines Made from Green Sheet

Shigetoshi Ohshima; Katsuro Okuyama; Kunio Sawaya; Keisuke Noguchi

doi:10.1143/JJAP.31.L539

Surface Resistance of Bi₂Sr₂Ca₁Cu₂O_y Strip Lines Made from Green Sheet

Shigetoshi Ohshima, Katsuro Okuyama, Kunio Sawaya, Keisuke Noguchi

Promotion Center of Strategic Innovation

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

The surface resistance, R_s, of Bi₂Sr₂Ca₁Cu₂O_y (2212) strip lines prepared by the doctor blade method was measured by the strip-line resonance method. The highest T_{c_R=0} of these strip lines measured by the conventional dc method was about 80 K. The R_s values were very sensitive to the surface and grain morphology of the films. It was verified through scanning electron microscope (SEM) observation and X-ray analysis that the R_s values of strip lines consisting of crystal grains whose c axes were oriented normal to substrate were smaller than those of strip lines with nonoriented grains. The values were about 6-22 mΩ at 70 K in the frequency range of 0.6-2.5 GHz. The R_s values were proportional to f^1.0, in contradiction to the f² dependence expected from the two-fluid model.

Original language	English
Pages (from-to)	L539-L542
Journal	Japanese journal of applied physics
Volume	31
Issue number	5
DOIs	https://doi.org/10.1143/JJAP.31.L539
Publication status	Published - 1992 May

Keywords

BSCCO
Doctor blade method
Oxide superconductor
Surface resistance

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1143/JJAP.31.L539

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Ohshima, S., Okuyama, K., Sawaya, K., & Noguchi, K. (1992). Surface Resistance of Bi₂Sr₂Ca₁Cu₂O_y Strip Lines Made from Green Sheet. Japanese journal of applied physics, 31(5), L539-L542. https://doi.org/10.1143/JJAP.31.L539

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title = "Surface Resistance of Bi2Sr2Ca1Cu2Oy Strip Lines Made from Green Sheet",

abstract = "The surface resistance, Rs, of Bi2Sr2Ca1Cu2Oy (2212) strip lines prepared by the doctor blade method was measured by the strip-line resonance method. The highest TcR=0 of these strip lines measured by the conventional dc method was about 80 K. The Rs values were very sensitive to the surface and grain morphology of the films. It was verified through scanning electron microscope (SEM) observation and X-ray analysis that the Rs values of strip lines consisting of crystal grains whose c axes were oriented normal to substrate were smaller than those of strip lines with nonoriented grains. The values were about 6-22 mΩ at 70 K in the frequency range of 0.6-2.5 GHz. The Rs values were proportional to f1.0, in contradiction to the f2 dependence expected from the two-fluid model.",

keywords = "BSCCO, Doctor blade method, Oxide superconductor, Surface resistance",

author = "Shigetoshi Ohshima and Katsuro Okuyama and Kunio Sawaya and Keisuke Noguchi",

year = "1992",

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AU - Ohshima, Shigetoshi

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AU - Sawaya, Kunio

AU - Noguchi, Keisuke

PY - 1992/5

Y1 - 1992/5

N2 - The surface resistance, Rs, of Bi2Sr2Ca1Cu2Oy (2212) strip lines prepared by the doctor blade method was measured by the strip-line resonance method. The highest TcR=0 of these strip lines measured by the conventional dc method was about 80 K. The Rs values were very sensitive to the surface and grain morphology of the films. It was verified through scanning electron microscope (SEM) observation and X-ray analysis that the Rs values of strip lines consisting of crystal grains whose c axes were oriented normal to substrate were smaller than those of strip lines with nonoriented grains. The values were about 6-22 mΩ at 70 K in the frequency range of 0.6-2.5 GHz. The Rs values were proportional to f1.0, in contradiction to the f2 dependence expected from the two-fluid model.

AB - The surface resistance, Rs, of Bi2Sr2Ca1Cu2Oy (2212) strip lines prepared by the doctor blade method was measured by the strip-line resonance method. The highest TcR=0 of these strip lines measured by the conventional dc method was about 80 K. The Rs values were very sensitive to the surface and grain morphology of the films. It was verified through scanning electron microscope (SEM) observation and X-ray analysis that the Rs values of strip lines consisting of crystal grains whose c axes were oriented normal to substrate were smaller than those of strip lines with nonoriented grains. The values were about 6-22 mΩ at 70 K in the frequency range of 0.6-2.5 GHz. The Rs values were proportional to f1.0, in contradiction to the f2 dependence expected from the two-fluid model.

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KW - Doctor blade method

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KW - Surface resistance

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