ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
High-temperature in situ x-ray studies of Pb-doped Bi2Sr2Ca2Cu3O10+δ have been carried out in a variety of different environments in order to determine the range of stability and the decomposition products that appear as this material transforms into other phases. In air at 840 °C, a combination of Bi2Sr2Ca0Cu1O6+δ, Ca2PbO4, (Sr,Ca)2Cu1O3, and some liquid phase coexists with Bi2Sr2Ca2Cu3O10+δ as it gradually decomposes. When the Bi2Sr2Ca2Cu3O10+δ is completely gone, the Bi2Sr2Ca0Cu1O6+δ, Ca2PbO4, and (Sr,Ca)2Cu1O3 transform to a liquid with CaO and other phases floating on the liquid. If Ag is micromilled with the Bi2Sr2Ca2Cu3O10+δ, the decomposition process is similar, but all of the temperatures are lowered substantially. If the partial pressure of O2 is reduced to 10 kPa over the Bi2Sr2Ca2Cu3O10+δ/Ag sample, the decomposition temperatures and products are similar to the 20 kPa case.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.357831
