Novel seed for batch cold seeding production of GdBaCuO bulks

Muralidhar Miryala, M. Tomita, K. Suzuki, Y. Fukumoto

研究成果: Article

11 引用 (Scopus)

抄録

A batch process for fabrication of GdBa2Cu3O y pellets in air was developed. The samples were melt-processed using the cold-seeding method and as seeds Nd-123 thin films grown on MgO crystals. We used a self-made Gd-123 and Gd-211 powders mixed with 0.1 wt.% of Pt. Up to 1-1.5 kg of melt-grown Gd-123 bulks can be prepared in one process. XRD results confirmed that all the bulks are c-axis oriented. The superconducting and magnetic performance of the pellets is checked on several small test samples cut out at various standard positions within the bulk. The values are quite uniform and performance is similar to the oxygen-controlled melt-grown Gd-123 samples. The average trapped field at 77 K in the 24 mm diameter samples batch lies between 0.8 and 0.9 T. The maximum trapped field of 1 T at the sample surface was the highest value reported so far for Gd-123 single grains processed in air. The present results prove that a high-performance good-quality LREBa 2Cu3Oy material can scale up from laboratory conditions to industrial production.

元の言語English
ページ(範囲)1158-1163
ページ数6
ジャーナルPhysica C: Superconductivity and its Applications
470
発行部数20
DOI
出版物ステータスPublished - 2010 11 1
外部発表Yes

Fingerprint

inoculation
Seed
seeds
Air
Powders
pellets
Oxygen
Fabrication
Thin films
Crystals
air
fabrication
oxygen
thin films
crystals

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Electronic, Optical and Magnetic Materials

これを引用

Novel seed for batch cold seeding production of GdBaCuO bulks. / Miryala, Muralidhar; Tomita, M.; Suzuki, K.; Fukumoto, Y.

:: Physica C: Superconductivity and its Applications, 巻 470, 番号 20, 01.11.2010, p. 1158-1163.

研究成果: Article

Miryala, Muralidhar ; Tomita, M. ; Suzuki, K. ; Fukumoto, Y. / Novel seed for batch cold seeding production of GdBaCuO bulks. :: Physica C: Superconductivity and its Applications. 2010 ; 巻 470, 番号 20. pp. 1158-1163.
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KW - Microstructure analysis

KW - Trapped filed analysis

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