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NIST X-ray Photoelectron Spectroscopy Database (SRD 20), Version 5.0
Reliable, with one-point correction of energy scale
Comment:
The sample was synthesized by a high-temperature solid state reaction using hugh-purity powders of Tl2O3, CaO and presintered Ba2Cu3O7 as starting materials. Tc = 126.7 K.