【摘要】 我们对Y（Dy）Ba₂Cu₃O_7-δ涂层导体的超导转变温度T_c、临界电流密度J_c、上临界磁场H_c2、不可逆场H_irr、热激活能U₀和磁通钉扎机理进行了系统的研究。结果显示当磁场垂直于（H//c）和平行于（H//ab）样品表面的方向,电阻率的展宽行为有明显的差别,说明电阻率具有很强的磁场诱导的面间各向异性。根据热激活的磁通运动理论,当外加磁场平行于样品表面（H//ab）时,钉扎相对于磁场垂直于样品表面（H//c）时要强,α值分别为0.5和0.57,说明涂层导体在H//c和H//ab时均属于面钉扎类型。更多还原

【Abstract】 We performed a systematic study of the superconducting transition temperature（T_c）, critical current density（J_c）, irreversibility field(H_irr), upper critical field(H_c2), activation energy（U₀） and flux pinning mechanism in Y(Dy_0.5)Ba₂Cu₃O_7-δ coated conductors. Our results show that the broadening of the resistivity transition is significantly different when H//c and H//ab, indicating that resistivity has a strong magnetic field-induced inter-plane anisotropy. Based on the thermally activated flux flow（TAFF） model, the flux pinning of H//ab is stronger than that of H//c. In the case of H//ab and H//c, α is 0.5 and 0.57 that indicate the surface pinning is responsible for the main pinning mechanism in Y(Dy_0.5)Ba₂Cu₃O_7-δ coated conductors.更多还原