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자료유형
학술저널
저자정보
이만수 (Department of Advanced Materials Engineering Chungbuk National University) 장건익 (Department of Advanced Materials Engineering Chungbuk National University) 전병혁 (Korea Atomic Energy Research Institute Superconductor Laboratory) 하동우 (Superconductivity Lab., Korea Electrotechnology Research institute) 손명환 (Superconductivity Lab., Korea Electrotechnology Research institute) 한영희 (Transmission and Distribution Lab., Korea Electric Power Research Institute) 박병준 (Transmission and Distribution Lab., Korea Electric Power Research Institute)
저널정보
한국초전도학회 Progress in superconductivity Progress in superconductivity 제12권 제2호
발행연도
2011.1
수록면
82 - 87 (6page)

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We studied the trapped field properties of bulk Y-Ba-Cu-O superconductors by applying 3 T of the permanent or $Nb_3Ti$ superconducting magnet. The 28 mm circular type of YBCO bulk superconductor was prepared and then hole at the center of bulk, parallel to the c-axis, was mechanically drilled. Typical size of hole in YBCO bulk was 10 mm in diameter. In order to examine the trapped field variation in terms of different impregnated materials, a hole in YBCO bulk was filled with resin and indium respectively. The trapped field decay due to flux flow was determined in terms of time. Our preliminary result indicates the trapped field value measured on the YBCO without hole after 30 minute by applying 3 T, was 6,500 G, which is much higher than that, 4,500 G, measured on YBCO with hole. Also, we confirmed that the tendency of a trapped field decrement with time was almost the same regardless of the impregnated materials in YBCO.

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