Wong-Ng, W.
, Dillingham, J.
and Cook, L.
(2000),
Phase Relations of the SrO-Ho<sub>2</sub>O<sub>3</sub>-CuO<sub>x</sub> System, Journal of Solid State Chemistry
(Accessed October 13, 2025)
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Phase Relations of the SrO-Ho2O3-CuOx System
Published
Author(s)
, J Dillingham,
Abstract
The phase diagram of the SrO-R2O3-CuOx system, where R=Ho, was investigated in air. The tie-line relationships of this system were determined. Two ternary phases were found, namely, the green phase SrHo2CuO5 and the A14-24 solid solution (Sr14-xHox)Cu24O41. The green phase is isostructural to its Ba-analog, BaHo2CuO5, and is orthorhombic with space group Pbnm, and cell parameters a=7.0971(13) , b=12.0262(23) , and c=5.5849(12) . Holmium was found to substitute for the Sr site in the solid solution (Sr14-xHox)Cu24O41 up to the value of x . 5. The melting temperature range of this solid solution is from 975 C, to 1025 C, for x=0 to x=5, respectively. The Sr-analog of the high Tc superconductor Ba2HoCu3O6+x was not observed in this system.Citation
Journal of Solid State Chemistry
Volume
149
Issue
No. 2
Pub Type
Journals
Keywords
14-24 phase, crystal chemistry, green phase, phase diagram, SrO-R<sub>2</sub>O<sub>3</sub>-CuO<sub>x</sub>, superconductor related
Citation
Issues
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Created February 1, 2000, Updated February 19, 2017