Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Smart metastructure method for increasing TC of Bi(Pb)SrCaCuO
  high-temperature superconductors   Improving the critical transition temperature (TC) of Bi(Pb)SrCaCuO
(B(P)SCCO) high-temperature superconductors is important, however, considerable
challenges exist. In this study, on the basis of the metamaterial structure and
the idea that the injecting energy will promote the formation of Cooper pairs,
a smart meta-superconductor B(P)SCCO consisting of B(P)SCCO microparticles and
Y2O3:Eu3++Ag or Y2O3:Eu3+ luminophor was designed. In the applied electric
field, the Y2O3:Eu3++Ag or Y2O3:Eu3+ luminophor generates an
electroluminescence (EL), thereby promoting the TC via EL energy injection. A
series of Y2O3:Eu3++Ag topological luminophor-doped B(P)SCCO samples was
prepared. Results showed that Y2O3:Eu3++Ag was dispersed around B(P)SCCO
particles, forming a metastructure. Accordingly, the onset transition
temperature (T_(C,on)) and zero resistance transition temperature (T_(C,0)) of
B(P)SCCO increased. Meanwhile, the B(P)SCCO sample doped with 0.2 wt% Y2O3 or
Y2O3:Sm3+ nonluminous inhomogeneous phase was also prepared to further prove
the influence of EL on the T_C rather than the rare earth effect. Results
indicated that the TC of the Y2O3 or Y2O3:Sm3+ doping sample decreased.
However, the TC of the 0.2 wt% Y2O3:Eu3++Ag or Y2O3:Eu3+ luminophor-doped
sample improved. This outcome further demonstrated that the smart metastructure
method can improve the TC of B(P)SCCO.

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The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol