2005•Unpublished venueRequires access

(14-x)SrCO3-xCaCO(3)-24CuO system to synthesize spin-ladder compounds Sr14-xCaxCu24O41 using DTA and XRD techniques

Ying Zeng, Fangfang Pan, Zuxing Yu, Ren‐Gen Xiong, Jianghai Shi

Abstract

The (14 - x) SrCO3-xCaCO(3)-24CuO system was investigated by means of differential thermal analysis (DTA) technique combined with the powder X-ray diffraction (XRD) technique, and the relationship of its thermal behavior with the synthesis of spin-ladder compound Sr14-xCaxCu24O41 was first analyzed in detail. It is found that the DTA curve (x = 8.4) shows three big endothermic peaks below 1000 degrees C. The intensity and the position of the first endothermic peak around 800 degrees C is depending on the content of CaCO3 in the system, while the third endothermic peak is the crucial factor of the synthesis of single-phase compound.

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Available abstract

Key concepts: Endothermic process, Differential thermal analysis, Diffraction, Thermal analysis, Materials science, Crystallography, Powder diffraction, Analytical Chemistry (journal)