@article{oai:nagoya.repo.nii.ac.jp:00028486,
 author = {Iida, Kazumasa and Omura, Taito and Matsumoto, Takuya and Hatano, Takafumi and Ikuta, Hiroshi},
 issue = {7},
 journal = {Superconductor Science and Technology},
 month = {Jul},
 note = {We have systematically investigated the grain boundary angle (θ GB) dependence of transport properties for NdFeAs(O,F) fabricated on [001]-tilt symmetric MgO bicrystal substrates. In our previous study, NdFeAs(O,F) bicrystal films showed a weak-link behaviour even at a θ GB of 6°. However, this was caused by an extrinsic effect originating from the damage to both NdFeAs(O,F) and MgO substrate by excess F-diffusion along the grain boundary. To investigate the intrinsic nature of grain boundaries, we minimized the damage to NdFeAs(O,F) and MgO by reducing the deposition temperature of the NdOF over-layer needed for F-doping. The resultant NdFeAs(O,F) bicrystal films have a critical angle of 8.5°, above which J c starts to decrease exponentially. This critical angle is almost the same as those of other Fe-based superconductors., ファイル公開：2020-07-01},
 title = {Grain boundary characteristics of oxypnictide NdFeAs(O,F) superconductors},
 volume = {32},
 year = {2019}
}