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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2008.1
- 수록면
- 146 - 151 (6page)
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초록· 키워드
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Measurements of surface resistance ($R_s$) of high temperature superconductor (HTS) films with accuracy are essential for microwave applications of HTS materials. In using the dielectric resonator method, uncertainties in the unloaded quality factor of the resonator cause significant errors in the measured $R_s$ of HTS films. We compare the Rs values of $YBa_2Cu_3O_{7-{\delta}}$ films calculated from the $Q_0$ as determined from the Lorentzian fit with that from the $Q_0$ as determined from the S-parameter circle-fit at temperatures between 15 K and 77 K. The two sets of values appeared to differ by 5%, 7%, 6%, and 11% at temperatures of 15, 60, 70, and 77 K, respectively, from each other, implying that careful error analysis needs to be performed in obtaining the $R_s$ of HTS films by using the Lorentzian-fit method, with the ones determined from the S-parameter circle-fit used as the reference.
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참고문헌 (7)
참고문헌 신청
Z.-Y. Shen / 1992 / High TC superconductorsapphire microwave resonator with extremely high Qvalues up to 90 K / IEEE Trans. Microwave Theory Tech 40:2424~2431
J. Krupka / 1993 / Surface resistance measurements of HTS films by means of sapphire dielectric resonators / IEEE Trans. Appl. Supercond 3:3043~3048
S. Y. Lee / 2003 / Recent Progress in Microwave HTS Technologies in Korea and Japan / Journal of Superconductivity: Incorporating Novel Magnetism 16:823~831
이상영 / 2008 / S-parameter Circle-fit과 Lorentzian-fit 방법으로 측정된 고온초전도체 박막의 유효표면저항 비교 / Progress in Superconductivity 9(2):146~151
Kenneth Leong / 2002 / Precise Measurements of the Q Factor of Dielectric Resonators in the Transmission Mode-Accounting for Noise, Crosstalk, Delay of Uncalibrated Lines, Coupling Loss, and Coupling Reactance / IEEE transactions on microwave theory and techniques 50:2115~2127
J. Krupka / 1993 / Surface resistance measurements of HTS films by means of sapphire dielectric resonators / IEEE Trans. Appl. Supercond 3:3043~3048
S. Y. Lee / 2003 / Recent Progress in Microwave HTS Technologies in Korea and Japan / Journal of Superconductivity: Incorporating Novel Magnetism 16:823~831
이상영 / 2008 / S-parameter Circle-fit과 Lorentzian-fit 방법으로 측정된 고온초전도체 박막의 유효표면저항 비교 / Progress in Superconductivity 9(2):146~151
Kenneth Leong / 2002 / Precise Measurements of the Q Factor of Dielectric Resonators in the Transmission Mode-Accounting for Noise, Crosstalk, Delay of Uncalibrated Lines, Coupling Loss, and Coupling Reactance / IEEE transactions on microwave theory and techniques 50:2115~2127
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