Distribution of Magnetic Flux in Powder-Melting-Processed YBCO Superconductors
TONG Litai, CHEN Haiying, YAN Shousheng, ZHANG Cungui1, ZHOU Lian2, WANG Keguang2
Department of Physics, Peking University, Beijing 100871
1Electron Microscope Laboratory, Peking University, Beijing 100871
2Northwest Institute for Nonferrous Metal Research, Baoji 721014
Distribution of Magnetic Flux in Powder-Melting-Processed YBCO Superconductors
Department of Physics, Peking University, Beijing 100871
1Electron Microscope Laboratory, Peking University, Beijing 100871
2Northwest Institute for Nonferrous Metal Research, Baoji 721014
Abstract： Using magnetic decoration technique, the distribution of magnetic flux in power-melting-processed Y-Ba-Cu-O superconductor has been studied in an applied field of 200G at 64K. The decoration patterns indicate that twin boundaries act as strong flux pinning sites and the nonsuperconducting Y2BaCuO5 (211) inclusions provide pinning sites in their vicinity by inducing lattice distortion. Chain-like vortex distribution, distorted hexagonal flux line lattice and anisotropic vortices have been observed.
TONG Litai;CHEN Haiying;YAN Shousheng;ZHANG Cungui;ZHOU Lian;WANG Keguang. Distribution of Magnetic Flux in Powder-Melting-Processed YBCO Superconductors[J]. 中国物理快报, 1993, 10(5): 313-316.
TONG Litai, CHEN Haiying, YAN Shousheng, ZHANG Cungui, ZHOU Lian, WANG Keguang. Distribution of Magnetic Flux in Powder-Melting-Processed YBCO Superconductors. Chin. Phys. Lett., 1993, 10(5): 313-316.
1993, Vol. 10 
