Preparation of La 2− xSr xCuO 4 single-crystalline films by infrared-heated liquid phase epitaxial technique

• Published in: Physica. C, Superconductivity Vol. 362; no. 1; pp. 180 - 185
• Main Authors: Tanaka, Isao, Ashizawa, Ken, Tanabe, Hideyoshi, Watauchi, Satoshi, Yamanaka, Junji
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 2001
• Subjects: Cuprate superconductor; Infrared heating; Liquid phase epitaxy; Single-crystal growth; Liquid phase epitaxy; Infrared heating; Single-crystal growth; Cuprate superconductor; 81.15.Lm; 74.72.Dn; 81.10.Dn
• ISSN: 0921-4534; 1873-2143
• DOI: 10.1016/S0921-4534(01)00667-0

We have designed a new liquid phase epitaxial (LPE) technique, infrared heated LPE (IR-LPE) technique, using no crucible to avoid a contamination from it. La 2− x Sr x CuO 4 single-crystalline films were grown on the a tetra-axis-orientated bulk single crystals of Zn- or Ni-doped La 2CuO 4 by the IR-LPE technique. La 2− x Sr x CuO 4 single-crystalline films of the thickness 35–250 μm and of Sr content 0.08⩽ x⩽0.15 were obtained. The superconducting properties in the La 2− x Sr x CuO 4 films were improved to T c,onset≈36 K for x=0.11, which is 10 K higher than that in the La 2− x Sr x CuO 4 bulk single crystals.