Pressure dependence of the superconducting transition temperature in alkali tungsten bronzes

✍ Scribed by D. Bloom; H. R. Shanks; J. Barnes; K. D. McKee; J. E. Ostenson; D. K. Finnemore

• Publisher: Springer US
• Year: 1976
• Tongue: English
• Weight: 273 KB
• Volume: 23
• Category: Article
• ISSN: 0022-2291
• DOI: 10.1007/bf00116307

✦ Synopsis

The superconducting transition temperatures have been measured for the tetragonal I phase of Nao.23 W03, the hexagonal phase of Ko.33 W03, and the hexagonal phase of Rbo.a3 WO3for pressures up to 20,000 bar. The slope of the curves is +1.7 • 10 -5 K/bar for the sodium bronze, -5.8 x 10 -s K/bar for the potassium bronze, and -1.5 x 10-5 K/barjbr the rubidium bronze. A sharp change in slope of the transition temperature vs. pressure curve for the potassium bronze at 4000 bar may indicate a phase change.