We have prepared several samples of Pb2Sr2Yl-xCaxCu308+O with various well defined oxygen contents and studied their oxidation process by TGA and characterized them by X-ray and electron diffraction. For x = 0 the upper limit for ~ is found to be 1.9. We show that the oxidation process is accompanie
Structural and electrical changes in Ln1.9Sr1.1−xCaxCu2O6+δ (Ln = La, Pr) systems
✍ Scribed by Takashi Ohyama; Naoki Ohashi; Osamu Fukunaga; Hiroyuki Ikawa; Fujio Izumi; Junzo Tanaka
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 793 KB
- Volume
- 249
- Category
- Article
- ISSN
- 0921-4534
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## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v
Pb2Sr2Ceo.sCao.sCu30 s and Pb2Sr2Lnl\_xCaxCu308 with Ln =Pr, Tb and x= 0.0 and 0.5 have been studied by rare-earth L ILm edge XANES spectroscopy. The spectra of Pb 2 Sr2Ceo.sCao.sCu 308 show that Ca doping of Pb 2 Sr2CeCu 308 causes a partial oxidation of Ce. Analysis within the framework of the And
Structural investigations of Bi 0.775 Ln 0.225 O 1.5 phases with rhombohedral Bi-Sr-O type, have been carried out using complementary techniques. Average crystal structures were refined from neutron diffraction powder data using the Rietveld method for Ln=La, Pr, Nd and Tb. The comparison with the m