Single Crystal Growth of Cuprate Superconductor (Lu0.8Nd0.2)Ba2Cu4O8 by KOH Flux Method
Abstract
Single crystals of Nd-substituted LuBa2Cu4O8 were successfully grown by the KOH flux method. The single phase of Lu1-xNdxBa2Cu4O8 [(Lu,Nd)124] formed at x = 0.2. The compound crystallized as an orthorhombic Ammm structure with lattice constants of a = 3.835(3) Å, b = 3.879(2) Å, and c = 27.195(6) Å. Single crystal structural analysis demonstrated that the Nd ion partially occupied the Lu site. The (Lu,Nd)124 exhibited a superconducting transition at ∼75 K in the magnetic susceptibility and resistivity. The Tc and the lattice constant c of the (Lu,Nd)124 corresponded to Tm124. These results indicate that an RE124 (RE: rare earth) equivalent to the one composed of a single RE element is obtained by combining two RE elements.
- Publication:
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Journal of the Physical Society of Japan
- Pub Date:
- December 2018
- DOI:
- 10.7566/JPSJ.87.123705
- arXiv:
- arXiv:1810.04936
- Bibcode:
- 2018JPSJ...87l3705H
- Keywords:
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- Condensed Matter - Superconductivity
- E-Print:
- 12 pages, 5 figures