Growth of anisotropic Tl‐2212 particles by molten salt synthesis

Highly anisotropic particles of Tl‐2212 superconductor were grown by molten salt synthesis. The Tl‐2212 superconductor was found to be the thermodynmic equilibrium phase and was found to be stable over a very wide compositional range. Best growth conditions were determined from KCl‐NaCl, KCl, KBr, and KI salt systems. Sodium containing salts were observed to electrically poison the superconductor. KCl was found to be the best candidate for the optimum growth of Tl‐2212 without any deterioration in the superconducting properties.