A device comprises a support net with nodes, wherein each node comprises a HTS photovoltaic-magnetic cell, wherein alignments of the HTS photovoltaic-magnetic cells are arranged with N-S in parallel alignment. A device comprises a tether comprising a plurality of HTS solenoids and a sheath, wherein a solenoid of the plurality of HTS solenoids comprises a high temperature superconducting material and reinforcing fiber. A device comprises propulsion ball or plate with tail, injected in propulsion channel; HTS solenoids disposed along walls of propulsion channel, wherein the propulsion ball or plate with tail are moved through the propulsion channel using magnetic field generated by HTS solenoids; and a collection channel.

This disclosure relates to compounds of formula (I):

L.sub.nD.sub.m(B.sub.xB.sub.1-x).sub.r(Z.sub.tZ.sub.1-t).sub.qM.sub.pA.sub.y(I)

in which n, m, x, r, t, q, p, L, D, B, B, Z, Z, M, and A are defined in the specification. These compounds can exhibit superconductivity at a high temperature.

A device comprises a solenoid of reinforced HTS material, wherein the solenoid of reinforced HTS material comprises a plurality continuous ordered fibers embedded in a high temperature superconducting material. A device comprises one or more coils, wherein the one or more coils comprise HTS solenoids; an armature coupled to a stem in a control valve, wherein the armature comprises a HTS solenoid; and coolant access paths, wherein the coolant access paths enable cooling the one or more coils and the armature. A device comprises a photovoltaic cell; and a parallel array of HTS solenoids, wherein the parallel array of HTS solenoids is coupled to the photovoltaic cell.

Operational characteristics of an extremely low resistance (ELR) film comprised of an ELR material may be improved by depositing a modifying material onto appropriate surfaces of the ELR film to create a modified ELR film. In some implementations of the invention, the ELR film may be in the form of a c-film. In some implementations of the invention, the ELR film may be in the form of an a-b film, an a-film or a b-film. The modified ELR film has improved operational characteristics over the ELR film alone or without the modifying material. Such operational characteristics may include operating in an ELR state at increased temperatures, carrying additional electrical charge, operating with improved magnetic properties, operating with improved mechanic properties or other improved operational characteristics. In some implementations of the invention, the ELR material is a mixed-valence copper-oxide perovskite, such as, but not limited to YBCO. In some implementations of the invention, the modifying material is a conductive material that bonds easily to oxygen, such as, but not limited to, chromium.

A system comprises a placer, a filler, a heater, and a cooler. The placer places a reinforcement structure within a production casing, wherein the reinforcement structure includes one or more fibers. The filler fills the production casing with high temperature superconducting (HTS) component powder. The heater heats the production casing with the reinforcement structure and the HTS component powder to generate liquefied HTS material from the HTS component powder. The cooler cools the liquefied HTS material to generate a solid HTS crystal.