T. Tamegai;R. Sakagami;T. Ito;K Takinoiri;A. Kikuchi;M. Yamamoto
{"title":"Comparison of Jc Characteristics Among (Ba,Na)Fe2As2 Wires and Tapes Fabricated by Different Methods","authors":"T. Tamegai;R. Sakagami;T. Ito;K Takinoiri;A. Kikuchi;M. Yamamoto","doi":"10.1109/TASC.2024.3513284","DOIUrl":null,"url":null,"abstract":"In the present study, critical current density (\n<italic>J</i>\n<sub>c</sub>\n) characteristics and uniformity of (Ba,Na)Fe\n<sub>2</sub>\nAs\n<sub>2</sub>\n wires and tapes fabricated by different methods and sheath materials are compared. Impurity-free high-quality polycrystalline powders were prepared by two different methods; direct reaction method and precursor method. By optimizing the heat treatment temperature and holding time of precursors, we have succeeded in obtaining high-quality precursor powders. In the case of wire drawing, a rotary swager with an automatic wire feeder is used to prevent sausaging. By using a roller, the wire was further deform into a tape form. In addition to the \n<italic>J</i>\n<sub>c</sub>\n characteristics of (Ba,Na)Fe\n<sub>2</sub>\nAs\n<sub>2</sub>\n wire and tapes, X-ray characterizations for the evaluation of texturing and uniformity are presented. Finally, a fine and long (Ba,Na)Fe\n<sub>2</sub>\nAs\n<sub>2</sub>\n wire is fabricated using Monel as an outer sheath material, and its characteristics are presented.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.7000,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Applied Superconductivity","FirstCategoryId":"101","ListUrlMain":"https://ieeexplore.ieee.org/document/10791407/","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
In the present study, critical current density (
J
c
) characteristics and uniformity of (Ba,Na)Fe
2
As
2
wires and tapes fabricated by different methods and sheath materials are compared. Impurity-free high-quality polycrystalline powders were prepared by two different methods; direct reaction method and precursor method. By optimizing the heat treatment temperature and holding time of precursors, we have succeeded in obtaining high-quality precursor powders. In the case of wire drawing, a rotary swager with an automatic wire feeder is used to prevent sausaging. By using a roller, the wire was further deform into a tape form. In addition to the
J
c
characteristics of (Ba,Na)Fe
2
As
2
wire and tapes, X-ray characterizations for the evaluation of texturing and uniformity are presented. Finally, a fine and long (Ba,Na)Fe
2
As
2
wire is fabricated using Monel as an outer sheath material, and its characteristics are presented.
期刊介绍：
IEEE Transactions on Applied Superconductivity (TAS) contains articles on the applications of superconductivity and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Large scale applications include magnets for power applications such as motors and generators, for magnetic resonance, for accelerators, and cable applications such as power transmission.
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