Structural analysis and transport properties of [010]-tilt grain boundaries in Fe(Se,Te)
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)2As2, Fe(Se,Te), and NdFeAs(O,F)], the dependence of the critical current density [Formula: see text] on misorientation angle...
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Taylor & Francis Group
2024-12-01
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| Series: | Science and Technology of Advanced Materials |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/14686996.2024.2384829 |
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| author | Kazumasa Iida Yoshihiro Yamauchi Takafumi Hatano Kai Walter Bernhard Holzapfel Jens Hänisch Zimeng Guo Hongye Gao Haoshan Shi Shinnosuke Tokuta Satoshi Hata Akiyasu Yamamoto Hiroshi Ikuta |
| author_facet | Kazumasa Iida Yoshihiro Yamauchi Takafumi Hatano Kai Walter Bernhard Holzapfel Jens Hänisch Zimeng Guo Hongye Gao Haoshan Shi Shinnosuke Tokuta Satoshi Hata Akiyasu Yamamoto Hiroshi Ikuta |
| author_sort | Kazumasa Iida |
| collection | DOAJ |
| description | 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)2As2, Fe(Se,Te), and NdFeAs(O,F)], the dependence of the critical current density [Formula: see text] on misorientation angle ([Formula: see text]) has been explored on [001]-tilt grain boundaries, but no data for other types of orientations have been reported. Here, we report on the structural and transport properties of Fe(Se,Te) grown on CeO2-buffered symmetric [010]-tilt roof-type SrTiO3 bicrystal substrates by pulsed laser deposition. X-ray diffraction and transmission electron microscopy revealed that [Formula: see text] of Fe(Se,Te) was smaller whereas [Formula: see text] of CeO2 was larger than that of the substrate. The difference in [Formula: see text] between the CeO2 buffer layer and the substrate is getting larger with increasing [Formula: see text]. For [Formula: see text] of the substrates, [Formula: see text] of Fe(Se,Te) was zero, whereas [Formula: see text] of CeO2 was continuously increasing. The inclined growth of CeO2 can be explained by the geometrical coherency model. The [Formula: see text]-axis growth of Fe(Se,Te) for [Formula: see text] of the substrates is due to the domain matching epitaxy on (221) planes of CeO2. Electrical transport measurements confirmed no reduction of inter-grain [Formula: see text] for [Formula: see text], indicative of strong coupling between the grains. |
| format | Article |
| id | doaj-art-9a2edefeb4c24a15add8a9adedac157b |
| institution | Kabale University |
| issn | 1468-6996 1878-5514 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Science and Technology of Advanced Materials |
| spelling | doaj-art-9a2edefeb4c24a15add8a9adedac157b2024-12-23T08:54:38ZengTaylor & Francis GroupScience and Technology of Advanced Materials1468-69961878-55142024-12-0125110.1080/14686996.2024.2384829Structural analysis and transport properties of [010]-tilt grain boundaries in Fe(Se,Te)Kazumasa Iida0Yoshihiro Yamauchi1Takafumi Hatano2Kai Walter3Bernhard Holzapfel4Jens Hänisch5Zimeng Guo6Hongye Gao7Haoshan Shi8Shinnosuke Tokuta9Satoshi Hata10Akiyasu Yamamoto11Hiroshi Ikuta12College of Industrial Technology, Nihon University, Narashino, Chiba, JapanDepartment of Materials Physics, Nagoya University, Nagoya, JapanJST CREST, Kawaguchi, Saitama, JapanInstitute for Technical Physics, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, GermanyInstitute for Technical Physics, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, GermanyInstitute for Technical Physics, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, GermanyJST CREST, Kawaguchi, Saitama, JapanThe Ultramicroscopy Research Center, Kyushu University, Fukuoka, JapanInterdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka, JapanJST CREST, Kawaguchi, Saitama, JapanJST CREST, Kawaguchi, Saitama, JapanJST CREST, Kawaguchi, Saitama, JapanDepartment of Materials Physics, Nagoya University, Nagoya, JapanUnderstanding 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)2As2, Fe(Se,Te), and NdFeAs(O,F)], the dependence of the critical current density [Formula: see text] on misorientation angle ([Formula: see text]) has been explored on [001]-tilt grain boundaries, but no data for other types of orientations have been reported. Here, we report on the structural and transport properties of Fe(Se,Te) grown on CeO2-buffered symmetric [010]-tilt roof-type SrTiO3 bicrystal substrates by pulsed laser deposition. X-ray diffraction and transmission electron microscopy revealed that [Formula: see text] of Fe(Se,Te) was smaller whereas [Formula: see text] of CeO2 was larger than that of the substrate. The difference in [Formula: see text] between the CeO2 buffer layer and the substrate is getting larger with increasing [Formula: see text]. For [Formula: see text] of the substrates, [Formula: see text] of Fe(Se,Te) was zero, whereas [Formula: see text] of CeO2 was continuously increasing. The inclined growth of CeO2 can be explained by the geometrical coherency model. The [Formula: see text]-axis growth of Fe(Se,Te) for [Formula: see text] of the substrates is due to the domain matching epitaxy on (221) planes of CeO2. Electrical transport measurements confirmed no reduction of inter-grain [Formula: see text] for [Formula: see text], indicative of strong coupling between the grains.https://www.tandfonline.com/doi/10.1080/14686996.2024.2384829Fe(Se,Te)roof-type grain boundarydomain matching epitaxy |
| spellingShingle | Kazumasa Iida Yoshihiro Yamauchi Takafumi Hatano Kai Walter Bernhard Holzapfel Jens Hänisch Zimeng Guo Hongye Gao Haoshan Shi Shinnosuke Tokuta Satoshi Hata Akiyasu Yamamoto Hiroshi Ikuta Structural analysis and transport properties of [010]-tilt grain boundaries in Fe(Se,Te) Science and Technology of Advanced Materials Fe(Se,Te) roof-type grain boundary domain matching epitaxy |
| title | Structural analysis and transport properties of [010]-tilt grain boundaries in Fe(Se,Te) |
| title_full | Structural analysis and transport properties of [010]-tilt grain boundaries in Fe(Se,Te) |
| title_fullStr | Structural analysis and transport properties of [010]-tilt grain boundaries in Fe(Se,Te) |
| title_full_unstemmed | Structural analysis and transport properties of [010]-tilt grain boundaries in Fe(Se,Te) |
| title_short | Structural analysis and transport properties of [010]-tilt grain boundaries in Fe(Se,Te) |
| title_sort | structural analysis and transport properties of 010 tilt grain boundaries in fe se te |
| topic | Fe(Se,Te) roof-type grain boundary domain matching epitaxy |
| url | https://www.tandfonline.com/doi/10.1080/14686996.2024.2384829 |
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