Lub discovery ntawmtooj liab oxidesuperconductors nrog qhov kub tseem ceeb Tc siab dua 77K tau pom tias muaj kev cia siab zoo dua rau cov khoom siv hluav taws xob, suav nrog perovskite oxide superconductors uas muaj cov ntsiab lus hauv ntiaj teb tsawg, xws li YBa2Cu3O7- δ. superconducting khoom. Tshwj xeeb tshaj yog hnyav tsis tshua muaj ntiaj teb, xws liGd, Dy, Ho, Er, Tm, thiabYb,tuaj yeem hloov ib nrab lossis tag nrhorare ntiaj teb yttrium (Y), ua ib tug series ntawm siab Tctsawg ntiaj tebsuperconducting cov ntaub ntawv (REBaCuO yooj yim los yog REBCO) nrog kev loj hlob muaj peev xwm.
Tsis tshua muaj lub ntiaj teb barium tooj liab oxide superconducting cov ntaub ntawv tuaj yeem ua rau hauv ib qho khoom siv ntau, coated conductors (thib ob-tiam high-temperature superconducting tapes), los yog nyias zaj duab xis cov ntaub ntawv, uas yog feem ntau siv nyob rau hauv superconducting magnetic levitation li thiab cov hlau nplaum ruaj khov, muaj zog hluav taws xob. cov tshuab, lossis cov khoom siv hluav taws xob tsis muaj zog. Tshwj xeeb tshaj yog nyob rau hauv lub ntsej muag ntawm lub ntiaj teb no lub zog ntsoog thiab ib puag ncig teeb meem, cov kws tshawb fawb kwv yees tias high-kub superconductivity yuav coj mus rau ib tug tshiab era ntawm lub zog tsim thiab kev faib.
Superconductivity yog hais txog qhov tseeb hais tias nyob rau hauv tej yam kev mob, cov khoom raug suav hais tias muaj pes tsawg DC tsis kam thiab ua tiav diamagnetic zog. Cov no yog ob qho kev ywj pheej ywj pheej, yav dhau los tseem hu ua ua tiav conductivity, thiab tom kawg kuj hu ua Meisner effect, uas txhais tau hais tias cov hlau nplaum tag nrho offsets cov cuab yeej sib nqus ntawm cov hlau nplaum lub zog, uas ua rau tag nrho tshem tawm cov hlau nplaum los ntawm. cov khoom siv sab hauv.
Post lub sij hawm: Oct-20-2023