Syntheses and NMR study of 4f-spin-free electron-doped copper oxides

✍ Scribed by Masatsugu Fukunaga; Takayuki Goto; Kazuya Miyagawa; Tetsuo Fukase

• Book ID: 103938523
• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 164 KB
• Volume: 194-196
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(94)91639-x

✦ Synopsis

All the electron-doped high-Tc oxides discovered so far inevitably contain lanthanides, whose 4f-spin fluctuation hides all the NMR information on the superconductivity. The new copper oxide superconductor (Lal-vYv)2-xCe~CuO4 with T'-type structure, which is fi'ee from 4f-spins has been successfully synthesized. Obtained compounds showed a nearly zero electric field gradient(EFG) at Cu site, which demonstrates that the doped carrier is electronic.