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Proceedings Paper

Design of solid solutions with perovskite and K2NiF4 structures as substrate with tunable lattice parameters for HTSC and CMR epitaxy
Author(s): Marek Berkowski; J. Fink-Finowicki; W. Piekarczyk; L. Perchuc; Krystyna Mazur; Jerzy Sass; L. O. Vasylechko; D. I. Savytskij
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Paper Abstract

Suitability of various materials with the perovskite and K2NiF4 structures as substrates for the epitaxy of high temperature superconductors (HTSC) and manganite perovskites with colossal magneto resistance (CMR) is studied. In particular, the analysis concentrates on solid solutions in LaGaO3-NdGaO3 and SrLaGaO4-SrLaAlO4 systems. The aim of the present investigation is to test the possibility of obtaining LaGaO3-NdGaO3 solid solutions with cubic structure. Single crystal growth of LaGaO3-NdGaO3 solid solutions in a selected NdGaO3 concentration range has been investigated. It allows us to estimate the segregation coefficient for Nd in La1-xNdxGaO3. Unit-cell parameters as a function of composition have been determined. Single crystal growth of SrLaGaO4-SrLaAlO4 solid solutions has also been investigated. The optimum starting melt composition, the segregation coefficients for Ga in SrLaAlO4 and Al in SrLaGaO4 as well as the unit-cell parameters as a function of composition have been determined. Both LaGaO3-NdGaO3 and SrLaGaO4-SrLaAlO4 solid solutions are suitable substrate materials for HTSC and CMR perovskite epitaxy. Since their lattice parameters can smoothly be adjusted to those of deposited layers, the presented solid solutions are attractive substrate materials with tunable lattice parameters.

Paper Details

Date Published: 24 March 1999
PDF: 8 pages
Proc. SPIE 3724, International Conference on Solid State Crystals '98: Single Crystal Growth, Characterization, and Applications, (24 March 1999); doi: 10.1117/12.342962
Show Author Affiliations
Marek Berkowski, Institute of Physics (Poland)
J. Fink-Finowicki, Institute of Physics (Poland)
W. Piekarczyk, Institute of Physics (Poland)
L. Perchuc, Institute of Physics (Poland)
Krystyna Mazur, Institute of Electronic Materials Technology (Poland)
Jerzy Sass, Institute of Electronic Materials Technology (Poland)
L. O. Vasylechko, Scientific Research Co. Carat (Ukraine)
D. I. Savytskij, Scientific Research Co. Carat (Ukraine)


Published in SPIE Proceedings Vol. 3724:
International Conference on Solid State Crystals '98: Single Crystal Growth, Characterization, and Applications
Andrzej Majchrowski; Jerzy Zielinski, Editor(s)

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