電極反応によるBi-2212相へのLiドープ [in Japanese] Li Doping into the Bi-2212 Phase by Electrochemical Method [in Japanese]
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The effects of electrochemical Li-doping on superconducting properties of the Bi-2212 phase have been investigated. The electrochemical Li-doping into the 2212 phase was first succeed with remaining the original crystal structure and without formation of any second phase. Maximum Li content y as Li<SUB>y</SUB>Bi<SUB>2</SUB>Sr<SUB>1.5</SUB>Ca<SUB>1.5</SUB>Cu<SUB>2</SUB>O<SUB>z</SUB> by this electrochemical reaction was found to be 0.37. The Li content increased with increasing in reaction time and applied potential. The lattice parameters (a, c) of the Bi-2212 crystals increased continuously from (5.397Å, 30.69Å) for y=0.0 to (5.411Å, 30.89Å) for y=0.37. Tc of the doped samples continuously decreased to OK for around y=0.27.
- J. Jpn. Soc. Powder Powder Metallurgy
J. Jpn. Soc. Powder Powder Metallurgy 44(2), 142-146, 1997-02-15
Japan Society of Powder and Powder Metallurgy