Chemical stabilization and high pressure synthesis of Ba-free Hg-based superconductors, (Hg,M)Sr{sub 2}Ca{sub n-1}Cu{sub n}O{sub y}(N=1{approximately}3)
- Univ. of Tokyo (Japan)
- Univ. of Tokyo (Japan); and others
A homologous series of new Hg-based HTSC compounds, (Hg,M)Sr{sub 2}Ca{sub n-1}Cu{sub n}O{sub y} with n=1 to 3, have been synthesized. The stabilization of the pure phases have been accomplished by chemical doping of third elements such as M=Cr, Mo and Re. While the Hg1201(n=1) phase was readily obtained in this way, it was necessary to simultaneously dope Y into the Ca site to stabilize the Hg1212(n=2) phase. On the other hand, single-phase Y-free Hg1212(n=2) and Hg1223(n=3) samples were synthesized only under a high pressure of 6 GPa. In sharp contrast to the Ba-containing compounds, all the samples prepared in the present study have been quite stable during the synthesis and no deterioration in air has been observed after the preparation.
- Research Organization:
- National Aeronautics and Space Administration (NASA), Washington, DC (United States); National Aeronautics and Space Administration, Houston, TX (United States). Lyndon B. Johnson Space Center
- OSTI ID:
- 121640
- Report Number(s):
- CONF-940627-Vol.2; ON: TI95017155; TRN: 99:003579
- Resource Relation:
- Conference: 4. international conference and exhibition of the World Congress on Superconductivity, Orlando, FL (United States), 27 Jun - 1 Jul 1994; Other Information: PBD: 1994; Related Information: Is Part Of Proceedings of the fourth international conference and exhibition: World Congress on superconductivity. Volume 2; Krishen, K.; Burnham, C. [eds.] [National Aeronautics and Space Administration, Houston, TX (United States). Lyndon B. Johnson Space Center]; PB: 400 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
High-pressure synthesis of a new homologous series of superconductors, (Hg{sub 1-x}Tl{sub x}){sub 2}Ba{sub 2}Ca{sub n-1}Cu{sub n}O{sub y} (0.3 {le} x {le} 0.6, n=3,4)
A new mercury-based superconductor with a [Tc] of 132 K [Hg[sub 0. 5]Tl[sub 0. 5]Ba[sub 2](Ca[sub 1[minus]x]Sr[sub x])[sub 2]Cu[sub 3]O[sub 8+[delta]]]