@article{oai:kyutech.repo.nii.ac.jp:00005061,
 author = {Jha,  Alok K. and Matsumoto, Kaname and 松本, 要 and Horide, Tomoya and 堀出, 朋哉 and Saini, Shrikant and サイニ, シリカント and Mele,  Paolo and Ichinose,  Ataru and Yoshida,  Yutaka and Awaji,  Satoshi},
 issue = {11},
 journal = {Superconductor Science & Technology},
 month = {Oct},
 note = {The effect of hybrid (columnar and spherical together) artificial pinning centers (APCs) on the vortex pinning properties of YBa2Cu3O7−δ (YBCO) thin films is investigated in detail on the basis of variation of critical current density (J C ) with applied magnetic field and also with the orientation of the applied magnetic field at 65 K and 77 K. Premixed YBCO + BaSnO3 composite targets are used for the deposition of the YBCO films which consist of self-assembled BaSnO3 nanocolumns (1D APCs); on the other hand, for the deposition of the YBCO films with hybrid APCs (BaSnO3 nanocolumns together with Y2O3 nanoparticles), the surface of the premixed YBCO + BaSnO3 composite targets are modified by putting a thin Y2O3 sectored piece on the premixed YBCO + BaSnO3 composite targets by means of silver paste. F pmax value increases systematically with incorporation of 1D and 1D and 3D APCs and it also shifts towards higher applied magnetic fields. Films with 1D APCs exhibit a strong J C peak at Θ = 0° (H//c-axis) whereas films consisting of hybrid APCs exhibit enhanced J C at all the investigated angular regimes. A possible mechanism of vortex pinning in samples with hybrid APCs is also discussed suggesting the role of 1D and 3D APCs.},
 title = {Tailoring the vortex pinning strength of YBCO thin films by systematic incorporation of hybrid artificial pinning centers},
 volume = {28},
 year = {2015},
 yomi = {マツモト, カナメ and ホリデ, トモヤ}
}