Properties of nanophase grains of superconducting YBCO prepared by wet-type jet mill

Superconducting ultrafine particles of YBCO were prepared by a wet-type jet mill in a high pressure flow of methyl-ethyl-ketone (CH 3COCH 2CH 3). As a result, when the mill is operated at a pressure of 1300 kg cm −2, ultrafine particles of YBCO show oriented polycrystal structures with a particle si...

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Bibliographic Details
Published inThin solid films Vol. 281; pp. 584 - 587
Main Authors Kezuka, H., Xi, Zhonghe, Miyanaga, Y., Kan-nari, C.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.08.1996
Subjects
Nanostructures
Superconductivity
Yttrium
Yttrium
Superconductivity
Nanostructures
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Summary:Superconducting ultrafine particles of YBCO were prepared by a wet-type jet mill in a high pressure flow of methyl-ethyl-ketone (CH 3COCH 2CH 3). As a result, when the mill is operated at a pressure of 1300 kg cm −2, ultrafine particles of YBCO show oriented polycrystal structures with a particle size 80–120 Å in diameter and with the lattice parameter of 3.9 Å in the [001] orientation from transmission electron microscopy studies. The particles show the T c to be at 93 K (onset) after annealing at 935–950°C for 12 h in oxygen.
ISSN:0040-6090
1879-2731
DOI:10.1016/0040-6090(96)08713-5