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A process for manufacturing superconducting magnets is described. Two conducting tapes are assembled with an insulating ceramic layer deposited between facing sides of the tapes. The tapes and the insulative refractory material are bonded together by, for example, rolling to result in a self insulating substrate tape to which superconducting composition precursors are applied for later annealing. In one aspect, the composite tape is then wound to result in a pancake coil which is exposed to high temperatures in an oxidizing environment to convert the superconducting precursors to superconducting materials. The resultant high temperature superconducting composition coil can then be used as a high temperature superconducting magnet with appropriate conducting connectors applied thereto.