Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10666544 | Materials Letters | 2005 | 5 Pages |
Abstract
The thermal behavior of (14âx)SrCO3-xCaCO3-24CuO system has been investigated using combined differential thermal analysis (DTA) and X-ray diffraction (XRD) measurements to get a better understanding of solid-state chemical changes resulting in the synthesis of spin-ladder compound Sr14âxCaxCu24O41. In the temperature region 900-1000 °C, the DTA curves present one and two endothermic peaks for xâ¤5.6 and xâ¥8.4, respectively. XRD measurements demonstrated that for xâ¤5.6, the solid-state reaction consists of three stages and leads to the formation of the single-phase Sr14âxCaxCu24O41. It is found that both XRD and DTA methods can be employed independently to determine the composition or temperature region in which the pure phase forms.
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Authors
Yi Zeng, Jing Shi, Zuxing Yu, Fusu Pan,