CAJ | 학술논문

为了提高氧化钇钡铜（YBCO）超导体的捕获磁场，成功制备了单畴 YBCO 超导块材，研究了不同强度脉冲磁场和充磁次数对 YBCO 超导体捕获磁场的影响。结果表明：对直径20 mm 的YBCO 超导体，存在一个最佳的脉冲磁场强度，使得捕获磁场最强；当采用最佳脉冲磁场充磁时，增加充磁次数可以显著增加 YBCO 超导体的捕获磁场。进一步采用 Bean 模型解释了该磁化规律。本文的研究结果有助于提高 YBCO 超导体的磁化效果和理解 YBCO 超导体的磁化机制。
위료제고양화을패동（YBCO）초도체적포획자장，성공제비료단주 YBCO 초도괴재，연구료불동강도맥충자장화충자차수대 YBCO 초도체포획자장적영향。결과표명：대직경20 mm 적YBCO 초도체，존재일개최가적맥충자장강도，사득포획자장최강；당채용최가맥충자장충자시，증가충자차수가이현저증가 YBCO 초도체적포획자장。진일보채용 Bean 모형해석료해자화규률。본문적연구결과유조우제고 YBCO 초도체적자화효과화리해 YBCO 초도체적자화궤제。
In order to improve the trapped field of YBCO bulk,a single domain YBCO bulk was successfully fabricated,and the effects of the intensity and the magnetization time of pulsed mag-netic fields on the trapped field have been investigated in detail.The result shows that the intensi-ty of the trapped field in YBCO superconductor with the diameter of 20 mm may reach its maxi-mum when the magnetic field with an optimal intensity(4.8 T)is applied.The trapped field in-creases significantly when the sample is magnetized for several times by the optimal magnetic field.Furthermore,the magnetization process is explained by Bean model.The results in this work helps to improve the magnetization efficiency of YBCO superconductors and understand the mag-netization mechanism.