Low-temperature heat capacities of crystalline Ho(Gly)₃Cl₃ · 3H₂O from 78 to 348 K

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• 作者：Jingnan ZHANG ; Hui WANG ; Zhicheng TAN ; Beiping LIU ; Quan SHI ; Bo TONG
• 关键词：rare-earth complex ; Ho(Gly)₃Cl₃ · ; 3H₂O ; low-temperature heat capacities ; thermodynamic functions
• 刊名：Journal of Rare Earths
• 出版年：2009
• 出版时间：December 2009
• 年：2009
• 卷：27
• 期：6
• 页码：919-922
• 全文大小：210 K

文摘

Heat capacities of the rare-earth complex with glycine [Ho(Gly)₃Cl₃ · 3H₂O] were measured with a high-precision automatic adiabatic calorimeter over the temperature range from 78 to 348 K. In the experimental temperature range, the heat capacities increased in a smooth and continuous manner and no phase transition or thermal anomaly occurred. Therefore, the sample was stable in the above temperature range. The values of experimental heat capacities were fitted to a polynomial equation with least square method and the thermodynamic functions, (H_T—H_298.15) and (S_T—S_298.15), were calculated.