@article{oai:kyutech.repo.nii.ac.jp:00001618,
 author = {Himeki, K and Kiuchi, Masaru and 木内, 勝 and 小田部, エドモンド 荘司 and Otabe, Edmund Soji and Matsushita, Teruo and 松下, 照男 and Miyata, S and Ibi, A and Yamada, Y and Shiohara, Y},
 issue = {15-20},
 journal = {Physica C: Superconductivity},
 month = {Sep},
 note = {The relaxation properties were investigated for PLD processed YBCO coated conductors deposited on IBAD substrates in the region of 0.25–1.50 μm for the thickness of superconducting layer to clarify the thickness dependence of the relaxation of magnetization. The apparent pinning potential View the MathML source was estimated from the relaxation rate. It was found that View the MathML source increases with increasing temperature in the low temperature region. The weak thickness dependence of View the MathML source in this temperature region comes from the three-dimensional flux pinning mechanism. Then, View the MathML source has a peak followed by a decrease with increasing temperature. The peak value of View the MathML source increases with increasing thickness. Hence, the thicker superconductor is more advantageous for applications in the middle temperature range and higher. The flux pinning mechanism in the medium and higher temperature region is two-dimensional and the larger View the MathML source value in the thicker specimen originates mainly from the thickness. For the improvement of View the MathML source in the low temperature region, it is required to enhance the flux pinning strength and to increase the thickness without deterioration in the critical current density.},
 pages = {1674--1678},
 title = {Relaxation properties of persistent current in YBCO-coated conductors},
 volume = {468},
 year = {2008},
 yomi = {キウチ, マサル and オタベ, エドモンド ソウジ and マツシタ, テルオ}
}