High performance batch production of LREBa2Cu3O y using novel thin film Nd-123 seed

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

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A batch production for fabrication of LREBa2Cu3O y (LRE: Sm, Gd, NEG) "LRE-123" pellets are developed in air and Ar-1% O2 using a novel thin film Nd-123 seeds grown on MgO crystals. The SEM and XRD results conformed that the quality and orientation of the seed crystals are excellent. On the other hand, new seeds can withstand temperatures >1100 °C, as a result, the cold seeding process was applied even to grow Sm-123 material in Air. The trapped field observed in the best 45 mm single-grain puck of Gd-123 was in the range of 1.35 T and 0.35 T at 77.3 K and 87.3 K, respectively. The average trapped field at 77.3 K in the 24 mm diameter NEG-123 samples batch lies between 0.9 and 1 T. The maximum trapped field of 1.2 T was recorded at the sample surface. Further, the maximum trapped field of 0.23 T at 77 K was recorded in a sample with 16 mm diameter of Sm-123 with 3 mol% BaO2 addition. As a result we made more then 130 single grain pucks within a couple of months. Taking advantage of the single grain batch processed material, we constructed self-made chilled levitation disk, which was used on the open day of railway technical research Institute. More then 150 children stood on the levitation disk and revel the experience of levitation. The present results prove that a high-performance good-quality class of LREBa2Cu3Oy material can be made by using a novel thin film Nd-123 seeds.

Original languageEnglish
Pages (from-to)834-839
Number of pages6
JournalPhysica C: Superconductivity and its Applications
Volume471
Issue number21-22
DOIs
Publication statusPublished - 2011 Nov
Externally publishedYes

Fingerprint

Seed
seeds
levitation
Puck
Thin films
thin films
Crystals
Crystal orientation
inoculation
pellets
crystals
Fabrication
Scanning electron microscopy
Air
fabrication
scanning electron microscopy
air
Temperature
temperature

Keywords

  • Batch process
  • Child levitation disk for material index
  • LRE-123 superconductor
  • LRE-BaCu O
  • Nd based MgO seeds
  • Trapped filed analysis

ASJC Scopus subject areas

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

Cite this

High performance batch production of LREBa2Cu3O y using novel thin film Nd-123 seed. / Miryala, Muralidhar; Suzuki, K.; Fukumoto, Y.; Ishihara, A.; Tomita, M.

In: Physica C: Superconductivity and its Applications, Vol. 471, No. 21-22, 11.2011, p. 834-839.

Research output: Contribution to journalArticle

Miryala, Muralidhar ; Suzuki, K. ; Fukumoto, Y. ; Ishihara, A. ; Tomita, M. / High performance batch production of LREBa2Cu3O y using novel thin film Nd-123 seed. In: Physica C: Superconductivity and its Applications. 2011 ; Vol. 471, No. 21-22. pp. 834-839.
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