Growth of large single crystals using the improved lamp-image floating-zone furnace: application to
- 1 September 1998
- journal article
- Published by IOP Publishing in Superconductor Science and Technology
- Vol. 11 (9) , 891-897
- https://doi.org/10.1088/0953-2048/11/9/011
Abstract
We grew large single crystals of reproducibly over a wide doping range using an improved travelling solvent floating zone (TSFZ) method. We performed a simulation on the lamp-image focusing to find an optimum condition for a steep temperature gradient along the rod. Based on the results of simulation, we adapted smaller lamps and shielded the partial area of the mirror surfaces. The improvement of the focusing had a great effect on keeping the molten zone stable for more than 100 h. Stabilization of the molten zone improves both the reproducibility of the crystal growth and the quality of the grown crystals.Keywords
This publication has 12 references indexed in Scilit:
- Direct Observation of a Magnetic Gap in SuperconductingPhysical Review Letters, 1995
- Determination of the solubility of alkaline-earth metals (Ca, Sr, Ba) into La2CuO4 by the SCFZ methodPhysica C: Superconductivity and its Applications, 1994
- Crystal growth of La2−xSrxCuO4−δ by the travelling-solvent floating-zone methodJournal of Crystal Growth, 1994
- Spin fluctuations in superconductingPhysical Review B, 1994
- Low energy excitations in superconductingPhysical Review Letters, 1993
- Disappearance of superconductivity in overdoped at a structural phase boundaryPhysical Review Letters, 1992
- Néel transition and sublattice magnetization of pure and dopedPhysical Review B, 1992
- Oxygen deficiency in the superconducting oxides (La1-xMx)2CuO4(M=Sr, Ba)Physica C: Superconductivity and its Applications, 1991
- Superconductor-to-nonsuperconductor transition in ( as investigated by transport and magnetic measurementsPhysical Review B, 1989
- Single crystal growth of superconducting La2-xSrxCuO4 by the TSFZ methodJournal of Crystal Growth, 1989