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Effects of Melt Chemistry and Platinum Doping in the Refinement of Y 2 Ba 1 Cu 1 O y Particles for the System Y‐Ba‐Cu‐O
Author(s) -
Lee HeeGyoun,
Park JongHyun,
Song JinTae
Publication year - 1995
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1995.tb08923.x
Subject(s) - platinum , doping , barium , atom (system on chip) , materials science , crystallography , refining (metallurgy) , chemistry , catalysis , metallurgy , organic chemistry , optoelectronics , computer science , embedded system
Effects of melt chemistry and platinum doping in the refinement of Y 2 Ba 1 Cu 1 O y (211) particles were investigated for the system Y‐Ba‐Cu‐O. The shapes of the 211 particles in the present study changed from needlelike in a (CuO + BaCuO) melt to nearly spherical in a CuO melt. Platinum plays a small role in the growth inhibition of 211 particles. Barium atoms clearly had no effect on the role of Pt in refining 211 particles, and Pt was found to affect the refinement as an elementary atom rather than as part of a Pt‐related compound. The main role of Pt in the refinement process for the system Y‐Ba‐Cu‐O seems to lie in changing the interfacial energy of the 211 particles .