TY - JOUR
T1 - Role of Superconducting Materials in the Endeavor to Stop Climate Change and Reach Sustainable Development
AU - Muralidhar, M.
AU - Srikanth, A. Sai
AU - Pinmangkorn, S.
AU - Santosh, M.
AU - Milos, J.
N1 - Funding Information:
This work was partly supported by Shibaura Institute of Technology (SIT) International Research Center for Green Electronics and Grant-in-Aid FD research budget code: 721MA56383. One of the co-authors, M.J., acknowledges support from the program Strategy AV 21-VP3 “Energy storage in flywheels.”
Publisher Copyright:
© 2023, The Author(s).
PY - 2023
Y1 - 2023
N2 - Progress in the mass production of newly developed bulk (Gd0.33Y0.13Er0.53)Ba2Cu3Oy “(Gd,Y,Er)123” and MgB2 systems is presented. Two batches of (Gd,Y,Er)123 pellets of 20 mm diameter and 7 mm thick were prepared in air by an infiltration growth “IG” process. Trapped field distribution profiles of fully grown bulk samples clearly showed that all samples were single-grain and the trapped field values were more than 0.5 T at 77 K, 1.3 mm above top surface. The best bulk exhibited the trapped field value of 0.63 T at 77 K. Ultra-sonication technique was employed for refining precursors of both (Gd,Y,Er)211 and boron. TEM studies revealed that boron powder subjected to ultrasonication was refined up to nanoscale. The micron-sized particles were reduced to nanoscale, which led to improvement of critical current by up to 36% in bulk MgB2 at 20 K and self-field. This progress in fabrication of high-performance LREBa2Cu3Oy and MgB2 superconducting bulks further promotes commercialization of superconductors’ production as a mode of sustainable technology.
AB - Progress in the mass production of newly developed bulk (Gd0.33Y0.13Er0.53)Ba2Cu3Oy “(Gd,Y,Er)123” and MgB2 systems is presented. Two batches of (Gd,Y,Er)123 pellets of 20 mm diameter and 7 mm thick were prepared in air by an infiltration growth “IG” process. Trapped field distribution profiles of fully grown bulk samples clearly showed that all samples were single-grain and the trapped field values were more than 0.5 T at 77 K, 1.3 mm above top surface. The best bulk exhibited the trapped field value of 0.63 T at 77 K. Ultra-sonication technique was employed for refining precursors of both (Gd,Y,Er)211 and boron. TEM studies revealed that boron powder subjected to ultrasonication was refined up to nanoscale. The micron-sized particles were reduced to nanoscale, which led to improvement of critical current by up to 36% in bulk MgB2 at 20 K and self-field. This progress in fabrication of high-performance LREBa2Cu3Oy and MgB2 superconducting bulks further promotes commercialization of superconductors’ production as a mode of sustainable technology.
KW - Critical current density
KW - GdYEr-123
KW - Global warming
KW - MgB
KW - Superconducting technology
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U2 - 10.1007/s10948-023-06515-6
DO - 10.1007/s10948-023-06515-6
M3 - Article
AN - SCOPUS:85147367775
SN - 1557-1939
JO - Journal of Superconductivity and Novel Magnetism
JF - Journal of Superconductivity and Novel Magnetism
ER -