publication . Article . 2006

Potassium substitution effects in YBa2Cu3O7- & delta superconductor

M Farbod; M Zargar Shoushtari;
Open Access English
  • Published: 01 Sep 2006 Journal: Iranian Journal of Physics Research (issn: 1682-6957, Copyright policy)
  • Publisher: Isfahan University of Technology
Abstract
  YBa2-xKxCu3O7-δ compound with x = 0, 0.1, 0.15, 0.2, 0.3, 0.5, 0.8, 1 was prepared. The samples were characterized by XRD, Tc, oxygen content and room temperature thermopower measurements. The results shows that by increasing the potassium, the samples go to the underdoped regime. This is due to the depletion of oxygen from the samples. By post annealing of the sample with x = 0.2 and Tc = 78 K in oxygen, the Tc increased up to 93 K which means it is possible to put back the oxygens into the structure.
Subjects
free text keywords: YBa2Cu3O7-d, potassium substitution, Physics, QC1-999
Download from

1. a) I Felner and B Barbara, Solid State Communic. 66 (1988) 205. b) I Felner, M Kowitt, Y Lehavi, Physica C 135-155 (1988) 898. c)Y Dalichaouch, M S Torikachili, E A Early, B W Lee, Solid State Communic. 65 (1988) 1001.

2. X S Wu, F Z Wang, S Nie, L Yang, S S Jiang, Physica C 339 (2000) 129.

3. P S Mukherjee, A Simon, M S Sarma, A D Damodaran, Sol. State Communic. 81 (1992) 253.

4. T Beals, J S Thorp, A S Al-Hawery, J Mater. Sci. Lett. 11 (1992) 192.

5. Y Khan, J. Mater. Sci. Lett. 7 (1988) 53.

6. S D Obertelli, J R Cooper, J L Tallon, Phy. Rev. B 46 (1992) 14928.

Powered by OpenAIRE Open Research Graph
Any information missing or wrong?Report an Issue