Study of certain magnetic and thermodynamic properties of low-dimensionality systems: The example of LiCo₂P₃O₁₀

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• 作者：M. Zoubir ; F. Erragh ; A. Boukhari and A. El Hajbi
• 关键词：Lithium dicobalt triphosphate ; Dimer model ; Fisher model ; Ising model ; Interaction ; Magnetic susceptibility ; Specific heat ; Magnetic entropy
• 刊名：Journal of Molecular Structure: THEOCHEM
• 出版年：2005
• 出版时间：2005
• 年：2005
• 卷：731
• 期：1-3
• 页码：201-206
• 全文大小：170 K

文摘

Crystals of lithium dicobalt triphosphate were obtained from the starting products Li₂CO₃, CoCO₃ and (NH₄)₂HPO₄ corresponding to the formula Li₂Co(PO₃)₄. The stoichiometric mixture was ground before being heated gradually to melting point (1123 K), then cooled slowly (3 K/h) to 200 °C. The magnetic susceptibility, magnetic specific heat and magnetic entropy at low temperature of the compound LiCo₂P₃O₁₀ were calculated theoretically using the Fisher, Dimer and Ising quantum mechanics models. The results show that the exchange interaction between the two ions Co²⁺–Co²⁺ is antiferromagnetic.