MECHANOCHEMICAL EFFECTS OF GRINDING ON THE YBA2CU3OX SUPERCONDUCTOR

Citation
Xs. Wu et al., MECHANOCHEMICAL EFFECTS OF GRINDING ON THE YBA2CU3OX SUPERCONDUCTOR, Physica. C, Superconductivity, 273(1-2), 1996, pp. 99-106
Citations number
21
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics, Applied
ISSN journal
0921-4534
Volume
273
Issue
1-2
Year of publication
1996
Pages
99 - 106
Database
ISI
SICI code
0921-4534(1996)273:1-2<99:MEOGOT>2.0.ZU;2-1
Abstract
The mechanical grinding effects on the powders of YBa2Cu3Ox supercondu ctor are examined. The grain size, the oxygen content of the powders d ecrease, and the content of the amorphous phase, the crystal strain in crease, with the increasing of grinding time. Except that for amorphou s phase, the crystallized phase can be refined by the orthorhombic and tetragonal phases. The refined results show that the diffraction peak s broaden after continuous grinding. This broadening can be explained from the crystal strain and the small grain size due to prolonged grin ding. The lattice constants of the refined phases vary with the grindi ng time.