Magnetic properties of superconducting YBa2Cu3O x permanent magnets prepared by the melt process

S. Gotoh, M. Murakami, H. Fujimoto, N. Koshizuka

研究成果: Article査読

28 被引用数 (Scopus)

抄録

Demagnetizing curves after field cooling were measured in the melt processed YBa2Cu3Ox superconductors using a vibrating sample magnetometer and a SQUID magnetometer. The curves showed that the samples worked as strong bulk permanent magnets. This is attributed to the strong flux pinning of the bulk superconductors and is well explained in terms of the Bean-London model. The magnetic properties of the permanent magnet can be continuously changed using the field-cooling technique. The magnet properties of the melt-powder-melt-growth processed YBa2Cu3O x with 1.5 mm thickness obtained at 5 K after field cooling in 10 kOe are as follows: the residual flux densities Br are 9.6 kG (H∥ c) and 8.5 kG (H⊥ c); the coercive forces bHc are 33 kOe (H∥ c) and 17 kOe (H⊥ c); and the maximum energy product, (BH) max, are 110 MGOe (H∥ c) and 49 MGOe (H⊥ c).

本文言語English
ページ(範囲)2404-2410
ページ数7
ジャーナルJournal of Applied Physics
72
6
DOI
出版ステータスPublished - 1992 12月 1
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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