Dependence of surface resistance in HTS thin films on a dc magnetic field

A. Saito; M. Shirakawa; K. Kitamura; Y. Noguchi; M. Mukaida; H. Yamasaki; Y. Nakagawa; S. Ohshima

doi:10.1109/TASC.2005.849394

Dependence of surface resistance in HTS thin films on a dc magnetic field

A. Saito, M. Shirakawa, K. Kitamura, Y. Noguchi, M. Mukaida, H. Yamasaki, Y. Nakagawa, S. Ohshima

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

12 Citations (Scopus)

Abstract

We investigated the behavior of the surface resistance (R_s) of high-temperature superconductor (HTS) thin films exposed to a dc magnetic field (parallel to the c-axis). Measurements were done using the dielectric resonator method and superconducting magnet system. The DyBa₂Cu ₃O_7-δ (DyBCO) and YBa₂Cu ₃O_7-δ (YBCO) thin films (produced by THEVA GmbH) were prepared through a thermal co-evaporation method. The resonant frequency of the TE₀₁₁ mode in the resonator was approximately 22 GHz. A dc magnetic field of up to 5 T was applied vertically to two parallel superconducting thin films placed into a closed-type Cu cavity. R_s of the DyBCO and YBCO thin films increased as the applied dc magnetic field increased. The R_s ratio (defined as R_s(5 T)/R _s(0 T)) of the DyBCO and YBCO thin films at 4.5 K was approximately 5 and 50, respectively. These results indicate that the DyBCO thin film may be better for use in low-temperature nuclear magnetic resonance applications.

Original language	English
Pages (from-to)	3692-3695
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	15
Issue number	2 PART III
DOIs	https://doi.org/10.1109/TASC.2005.849394
Publication status	Published - Jun 2005
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/TASC.2005.849394

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title = "Dependence of surface resistance in HTS thin films on a dc magnetic field",

abstract = "We investigated the behavior of the surface resistance (Rs) of high-temperature superconductor (HTS) thin films exposed to a dc magnetic field (parallel to the c-axis). Measurements were done using the dielectric resonator method and superconducting magnet system. The DyBa2Cu 3O7-δ (DyBCO) and YBa2Cu 3O7-δ (YBCO) thin films (produced by THEVA GmbH) were prepared through a thermal co-evaporation method. The resonant frequency of the TE011 mode in the resonator was approximately 22 GHz. A dc magnetic field of up to 5 T was applied vertically to two parallel superconducting thin films placed into a closed-type Cu cavity. Rs of the DyBCO and YBCO thin films increased as the applied dc magnetic field increased. The Rs ratio (defined as Rs(5 T)/R s(0 T)) of the DyBCO and YBCO thin films at 4.5 K was approximately 5 and 50, respectively. These results indicate that the DyBCO thin film may be better for use in low-temperature nuclear magnetic resonance applications.",

author = "A. Saito and M. Shirakawa and K. Kitamura and Y. Noguchi and M. Mukaida and H. Yamasaki and Y. Nakagawa and S. Ohshima",

note = "Funding Information: Manuscript received October 4, 2004x. This research was supported in part by CREST of Japan Science and Technology corporation, Yamagata prefecture, Marubun research promotion foundation, the Ministry of Education, Culture, Sports, Science and technology, Grant-in-Aid for Young Scientists (B), 16760019, 2004. A part of this work was carried out in the clean room of Yamagata University.",

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volume = "15",

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AU - Saito, A.

AU - Shirakawa, M.

AU - Kitamura, K.

AU - Noguchi, Y.

AU - Mukaida, M.

AU - Yamasaki, H.

AU - Nakagawa, Y.

AU - Ohshima, S.

N1 - Funding Information: Manuscript received October 4, 2004x. This research was supported in part by CREST of Japan Science and Technology corporation, Yamagata prefecture, Marubun research promotion foundation, the Ministry of Education, Culture, Sports, Science and technology, Grant-in-Aid for Young Scientists (B), 16760019, 2004. A part of this work was carried out in the clean room of Yamagata University.

PY - 2005/6

Y1 - 2005/6

N2 - We investigated the behavior of the surface resistance (Rs) of high-temperature superconductor (HTS) thin films exposed to a dc magnetic field (parallel to the c-axis). Measurements were done using the dielectric resonator method and superconducting magnet system. The DyBa2Cu 3O7-δ (DyBCO) and YBa2Cu 3O7-δ (YBCO) thin films (produced by THEVA GmbH) were prepared through a thermal co-evaporation method. The resonant frequency of the TE011 mode in the resonator was approximately 22 GHz. A dc magnetic field of up to 5 T was applied vertically to two parallel superconducting thin films placed into a closed-type Cu cavity. Rs of the DyBCO and YBCO thin films increased as the applied dc magnetic field increased. The Rs ratio (defined as Rs(5 T)/R s(0 T)) of the DyBCO and YBCO thin films at 4.5 K was approximately 5 and 50, respectively. These results indicate that the DyBCO thin film may be better for use in low-temperature nuclear magnetic resonance applications.

AB - We investigated the behavior of the surface resistance (Rs) of high-temperature superconductor (HTS) thin films exposed to a dc magnetic field (parallel to the c-axis). Measurements were done using the dielectric resonator method and superconducting magnet system. The DyBa2Cu 3O7-δ (DyBCO) and YBa2Cu 3O7-δ (YBCO) thin films (produced by THEVA GmbH) were prepared through a thermal co-evaporation method. The resonant frequency of the TE011 mode in the resonator was approximately 22 GHz. A dc magnetic field of up to 5 T was applied vertically to two parallel superconducting thin films placed into a closed-type Cu cavity. Rs of the DyBCO and YBCO thin films increased as the applied dc magnetic field increased. The Rs ratio (defined as Rs(5 T)/R s(0 T)) of the DyBCO and YBCO thin films at 4.5 K was approximately 5 and 50, respectively. These results indicate that the DyBCO thin film may be better for use in low-temperature nuclear magnetic resonance applications.

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ER -

Dependence of surface resistance in HTS thin films on a dc magnetic field

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