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Effects of sintering conditions on critical current properties and microstructures of MgB2 bulks

โœ Scribed by Akiyasu Yamamoto; Jun-ichi Shimoyama; Shinya Ueda; Yukari Katsura; Isao Iwayama; Shigeru Horii; Kohji Kishio


Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
236 KB
Volume
426-431
Category
Article
ISSN
0921-4534

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Effect of Zn on pinning properties in Mg
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Bulk samples of nominal Zn x (MgB 2 ) 1ร€x were prepared from the mixture of Mg, B, and ZnO in the Ar atmosphere at 900 ยฐC for 30 min, where x was 0-0.1. Critical current densities J c 's were estimated from the magnetization data using an extended critical state model. Improvement of J c was confirm