Abstract: A dielectric ceramic composition, making it possible to obtain a dielectric ceramic being able to fire at a low temperature of about 1,100° C. or less, being capable of being co-sintered with low resistance and inexpensive metals such as Ag and Cu, the dielectric constant and the Q value of which is high, and the temperature coefficient of the dielectric constant of which is small, is provided. The dielectric ceramic composition is composed of 100 parts by weight of a primary component having about 22 to 43 parts by weight of TiO2, about 38 to 58 parts by weight of ZrO2 and about 9 to 26 parts by weight of SnO2; and about 3 to 20 parts by weight of glass containing at least B and Si.

Abstract: 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.