白丝美女被狂躁免费视频网站,500av导航大全精品,yw.193.cnc爆乳尤物未满,97se亚洲综合色区,аⅴ天堂中文在线网官网

Oxide superconductor and method for manufacturing same

專利號
US12161054B2
公開日期
2024-12-03
申請人
KABUSHIKI KAISHA TOSHIBA（JP Tokyo）
發(fā)明人
Takeshi Araki; Hirotaka Ishii
IPC分類
H10N60/85; H10N60/01
技術領域
ybco,pr,region,in,coating,film,ococh3,oxide,perovskite,μm
地域： Tokyo

摘要

An oxide superconductor of an embodiment includes an oxide superconducting layer including a first superconducting region containing barium, copper, and a first rare earth element, having a continuous perovskite structure, and extending in a first direction, a second superconducting region containing barium, copper, and a second rare earth element, having a continuous perovskite structure, and extending in the first direction, and a non-superconducting region disposed between the first and the second superconducting region, containing praseodymium, barium, copper, and a third rare earth element, a ratio of the number of atoms of the praseodymium to a sum of the number of atoms of the third rare earth element and the number of atoms of the praseodymium which is 20% or more, having a continuous perovskite structure continuous with the perovskite structure of the first superconducting region and the perovskite structure of the second superconducting region, and extending in the first direction.

說明書

In the TFA-MOD method, the quasi-liquid phase grows, and the growth interface where the unit cells are released is in a state of precipitated into the bottom of the quasi-liquid phase. Since the control of the oxygen partial pressure is outside the quasi-liquid phase and the oxygen partial pressure does not significantly affect the growth interface, the perovskite structure in which the YBCO and PrBCO are mixed can be obtained. In the previous patent application, the YBCO with 10% Pr substitution have been reported.

Under the conditions of this application, the purity of Pr was as low as 98%, so the limit of Pr that could be substituted at the Y site was 10%, and the coating solution was precipitated at a higher concentration. It is certain that the decomposition of Pr in the PS-SIG method was further suppressed by improving the purity of Pr to 99%, and the YBCO and PrBCO exceeding 20% coexist in the obtained perovskite structure. This is the first report of an unprecedented structure. At the same time, it is the first report that it was confirmed that the 5 times degradation phenomenon of Pr is applied even with 20% or 22% of Pr and thus becomes the non-superconductor.

Example 2

According to the flowchart illustrated in FIG. 3, two types of coating solutions for superconductors are synthesized and purified. Powders of each hydrate of 99% purity of Pr(OCOCH3)3, 99% purity of Y(OCOCH3)3, 99% purity of Ba(OCOCH3)2, and 99% purity of Cu(OCOCH3)2 in metal acetate were used.

權利要求

1
微信群二維碼
意見反饋