{"title":"Crossed fields magnetization of YBCO single-grain bulk superconductors","authors":"Haoran Jiang, Yuchen Wang, Xuechun Wang, Wenhao Li, Yibing Zhang, Chuanbing Cai, Difan Zhou","doi":"10.1016/j.cryogenics.2024.103927","DOIUrl":null,"url":null,"abstract":"<div><p>Operando magnetization remains a critical issue for practical applications of single-grain bulk high temperature superconductors (HTSs) as strong trapped field magnets (TFMs). It has been previously proved that the magnetization efficiency can be improved by exploiting flux jumps during the pulsed field magnetization (PFM). In this study, we proposed a novel PFM sequence combining a transverse magnetization followed by a vertical magnetization namely the crossed fields magnetization. It was found the final trapped field distribution greatly depended on the direction of the transverse field exhibiting chirality features. Numerical simulation revealed the redistribution of the induced current during the vertical PFM indicating more intense flux motion will be involved. As a result, the external magnetic field required to magnetize the bulk was reduced by about 10 % at 30 K and the magnetization efficiency was improved.</p></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":null,"pages":null},"PeriodicalIF":1.8000,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cryogenics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0011227524001474","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
Operando magnetization remains a critical issue for practical applications of single-grain bulk high temperature superconductors (HTSs) as strong trapped field magnets (TFMs). It has been previously proved that the magnetization efficiency can be improved by exploiting flux jumps during the pulsed field magnetization (PFM). In this study, we proposed a novel PFM sequence combining a transverse magnetization followed by a vertical magnetization namely the crossed fields magnetization. It was found the final trapped field distribution greatly depended on the direction of the transverse field exhibiting chirality features. Numerical simulation revealed the redistribution of the induced current during the vertical PFM indicating more intense flux motion will be involved. As a result, the external magnetic field required to magnetize the bulk was reduced by about 10 % at 30 K and the magnetization efficiency was improved.
期刊介绍：
Cryogenics is the world''s leading journal focusing on all aspects of cryoengineering and cryogenics. Papers published in Cryogenics cover a wide variety of subjects in low temperature engineering and research. Among the areas covered are:
- Applications of superconductivity: magnets, electronics, devices
- Superconductors and their properties
- Properties of materials: metals, alloys, composites, polymers, insulations
- New applications of cryogenic technology to processes, devices, machinery
- Refrigeration and liquefaction technology
- Thermodynamics
- Fluid properties and fluid mechanics
- Heat transfer
- Thermometry and measurement science
- Cryogenics in medicine
- Cryoelectronics
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