Influence of in-plane 0-45° grain boundary on microwave surface resistance of c-axis YBa2Cu3Oy films on MgO substrate

M. Kusunoki; Y. Takano; M. Mukaida; S. Ohshima

doi:10.1016/S0921-4534(99)00361-5

Influence of in-plane 0-45° grain boundary on microwave surface resistance of c-axis YBa₂Cu₃O_y films on MgO substrate

M. Kusunoki, Y. Takano, M. Mukaida, S. Ohshima

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

17 Citations (Scopus)

Abstract

The effect of in-plane 0-45° grain boundaries on surface resistance (R_s) of c-axis YBa₂Cu₃O_y (YBCO) films on MgO substrates is discussed. Samples that have various densities of 45° rotated grains were prepared using a self-template technique. The R_s values at 22 GHz were measured by the dielectric resonator method using a cryocooler. The R_s systematically changed corresponding to the amount of 0-45° grain boundaries. Conspicuous feature of the films including 0-45° grain boundaries is a large residual surface resistance. The R_s of almost perfectly in-plane aligned YBCO film scaled to 10 GHz were 0.12 mΩ at 20 K and 0.67 mΩ at 77 K on the assumption of tan δ = 0, respectively.

Original language	English
Pages (from-to)	81-85
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	321
Issue number	1
DOIs	https://doi.org/10.1016/S0921-4534(99)00361-5
Publication status	Published - Aug 1 1999
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/S0921-4534(99)00361-5

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title = "Influence of in-plane 0-45° grain boundary on microwave surface resistance of c-axis YBa2Cu3Oy films on MgO substrate",

abstract = "The effect of in-plane 0-45° grain boundaries on surface resistance (Rs) of c-axis YBa2Cu3Oy (YBCO) films on MgO substrates is discussed. Samples that have various densities of 45° rotated grains were prepared using a self-template technique. The Rs values at 22 GHz were measured by the dielectric resonator method using a cryocooler. The Rs systematically changed corresponding to the amount of 0-45° grain boundaries. Conspicuous feature of the films including 0-45° grain boundaries is a large residual surface resistance. The Rs of almost perfectly in-plane aligned YBCO film scaled to 10 GHz were 0.12 mΩ at 20 K and 0.67 mΩ at 77 K on the assumption of tan δ = 0, respectively.",

author = "M. Kusunoki and Y. Takano and M. Mukaida and S. Ohshima",

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AU - Kusunoki, M.

AU - Takano, Y.

AU - Mukaida, M.

AU - Ohshima, S.

PY - 1999/8/1

Y1 - 1999/8/1

N2 - The effect of in-plane 0-45° grain boundaries on surface resistance (Rs) of c-axis YBa2Cu3Oy (YBCO) films on MgO substrates is discussed. Samples that have various densities of 45° rotated grains were prepared using a self-template technique. The Rs values at 22 GHz were measured by the dielectric resonator method using a cryocooler. The Rs systematically changed corresponding to the amount of 0-45° grain boundaries. Conspicuous feature of the films including 0-45° grain boundaries is a large residual surface resistance. The Rs of almost perfectly in-plane aligned YBCO film scaled to 10 GHz were 0.12 mΩ at 20 K and 0.67 mΩ at 77 K on the assumption of tan δ = 0, respectively.

AB - The effect of in-plane 0-45° grain boundaries on surface resistance (Rs) of c-axis YBa2Cu3Oy (YBCO) films on MgO substrates is discussed. Samples that have various densities of 45° rotated grains were prepared using a self-template technique. The Rs values at 22 GHz were measured by the dielectric resonator method using a cryocooler. The Rs systematically changed corresponding to the amount of 0-45° grain boundaries. Conspicuous feature of the films including 0-45° grain boundaries is a large residual surface resistance. The Rs of almost perfectly in-plane aligned YBCO film scaled to 10 GHz were 0.12 mΩ at 20 K and 0.67 mΩ at 77 K on the assumption of tan δ = 0, respectively.

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Influence of in-plane 0-45° grain boundary on microwave surface resistance of c-axis YBa₂Cu₃O_y films on MgO substrate

Abstract

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