... patterns, 18 diffraction peaks are observed at 2θ= 22. 81, 27. 71, 27. 91, 30. 61, 32. 51, 32. 81, 38. 51, 40. 31, 46. 51, 47. 51, 51. 41, 52. 51, 54. 91, 58. 21, 58. 71, 62. 71, 68 .11 and 68. 71, corresponding to the ... (030), (12 0), (0 21) , (040), (13 0), (0 31) , (050), (13 1), (200), (002), (15 1), (16 0), (070), (16 1), (13 2), (2 41) , (260), and (0 81) planes of orthorhombic YBa2Cu3O7-x, respectively [10 ]. These ... size of the superconductors and the length of the c-axis of the unit cell of the system are highly effective on both of the first and second chaotic points of the superconducting system. 2. The...