Zobrazeno 1 - 10
of 195
pro vyhledávání: '"Iida Kazumasa"'
Autor:
Iida, Kazumasa, Yamauchi, Yoshihiro, Hatano, Takafumi, Walter, Kai, Holzapfel, Bernhard, Hänisch, Jens, Guo, Zimeng, Gao, Hongye, Shi, Haoshan, Tokuta, Shinnosuke, Hata, Satoshi, Yamamoto, Akiyasu, Ikuta, Hiroshi
Publikováno v:
Sci. Technol. Adv. Mater. 25, 2384829 (2024)
Understanding the nature of grain boundaries is a prerequisite for fabricating high-performance superconducting bulks and wires. For iron-based superconductors [e.g. Ba(Fe,Co)$_2$As$_2$, Fe(Se,Te), and NdFeAs(O,F)], the dependence of the critical cur
Externí odkaz:
http://arxiv.org/abs/2409.12847
Autor:
Qin, Dongyi, Iida, Kazumasa, Guo, Zimeng, Wang, Chao, Saito, Hikaru, Hata, Satoshi, Naito, Michio, Yamamoto, Akiyasu
Molecular beam epitaxy of K-doped Ba122 (Ba$_{1-x}$K$_x$Fe$_\text{2}$As$_\text{2}$) superconductor was realized on a MgO substrate. Microstructural observation revealed that the undoped Ba122 served as a perfect buffer layer for epitaxial growth of t
Externí odkaz:
http://arxiv.org/abs/2207.06629
Autor:
Guo, Zimeng, Gao, Hongye, Kondo, Keisuke, Hatano, Takafumi, Iida, Kazumasa, Hänisch, Jens, Ikuta, Hiroshi, Hata, Satoshi
Publikováno v:
ACS Appl. Electron. Mater., 3, 7 (2021)
This paper reports the nanoscale texture and microstructure of a high-performance NdFeAs(O,F) superconducting thin film grown by molecular beam epitaxy on a textured MgO/Y$_2$O$_3$/Hastelloy substrate. The NdFeAs(O,F) film forms a highly textured col
Externí odkaz:
http://arxiv.org/abs/2111.10215
Autor:
Iida, Kazumasa, Qin, Dongyi, Tarantini, Chiara, Hatano, Takafumi, Wang, Chao, Guo, Zimeng, Gao, Hongy, Saito, Hikaru, Hata, Satoshi, Naito, Michio, Yamamoto, Akiyasu
Publikováno v:
NPG Asia Materials, 13, 68 (2021)
The most effective way to enhance the dissipation-free supercurrent in presence of magnetic field for type II superconductors is the introduction of defects that acts as artificial pinning centres (APCs) for the vortices. For instance, the in-field c
Externí odkaz:
http://arxiv.org/abs/2110.15577
Autor:
Iida, Kazumasa, Hänisch, Jens, Kondo, Keisuke, Chen, Mingyu, Hatano, Takafumi, Wang, Chao, Saito, Hikaru, Hata, Satoshi, Ikuta, Hiroshi
Publikováno v:
Sci. Rep. 11, 5636 (2021)
The recent realisations of hydrogen doped $Ln$FeAsO ($Ln$=Nd and Sm) superconducting epitaxial thin films call for further investigation of their structural and electrical transport properties. Here, we report on the microstructure of a NdFeAs(O,H) e
Externí odkaz:
http://arxiv.org/abs/2102.13543
Autor:
Qin, Dongyi, Iida, Kazumasa, Hatano, Takafumi, Saito, Hikaru, Ma, Yiming, Wang, Chao, Hata, Satoshi, Naito, Michio, Yamamoto, Akiyasu
Publikováno v:
Phys. Rev. Materials 5, 014801 (2021)
The iron-based superconductor Ba$_{1-x}$K$_x$Fe$_\text{2}$As$_\text{2}$ is emerging as a key material for high magnetic field applications owing to the recent developments in superconducting wires and bulk permanent magnets. Epitaxial thin films play
Externí odkaz:
http://arxiv.org/abs/2012.13723
Publikováno v:
Superconductor Science and Technology 33, 043001 (2020)
Understanding the nature of grain boundary (GB) characteristics in combination with creating low-energy GBs by modifying the processing conditions, so-called GB engineering, is of great importance for controlling and reducing the defect density, lead
Externí odkaz:
http://arxiv.org/abs/2003.09146
Publikováno v:
Superconductor Science and Technology 33, 044016 (2020)
NdFeAs(O,F) thin films having different fluorine contents were grown on 5 deg. or 10 deg. vicinal cut MgO and CaF2 single crystalline substrates by molecular beam epitaxy. Structural characterisations by reflection high-energy electron diffraction an
Externí odkaz:
http://arxiv.org/abs/2003.09105
We have systematically investigated the grain boundary (GB) angle 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 be
Externí odkaz:
http://arxiv.org/abs/1904.03561
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