Magnetic and XPS studies of lithium lanthanide tetraphosphates LiLnP₄O₁₂ (Ln=Nd, Gd, Er)

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• 作者：D. Petrov^a ; ^{ellhnas1@abv.bg} ; ^{petrov_d_n@abv.bg} ; B. Angelov^b ; V. Lovchinov^c
• 关键词：lithium lanthanide tetraphosphates ; single crystals ; magnetic properties ; XPS spectroscopy ; rare earths
• 刊名：Journal of Rare Earths
• 出版年：2013
• 出版时间：May, 2013
• 年：2013
• 卷：31
• 期：5
• 页码：485-489
• 全文大小：410 K

文摘

Magnetic susceptibilities of flux-grown single crystals of LiLnP₄O₁₂ (Ln=Nd, Gd, Er) were measured in the temperature range of 2-300 K. The compounds were paramagnetic, and obeyed the Curie-Weiss law in the entire temperature interval, without magnetic phase transitions, and with effective magnetic moments close to those of the corresponding free Ln³⁺ ions. X-ray photoelectron spectroscopy was applied to determine the positions of core-level electrons relative to the Fermi level: Li 1s; Ln 4f, 5p, 5s, 4d, 3d; P 2s, 2p; O 1s, 2s. The binding energies in these compounds were found slightly shifted compared to the respective values of the same elements.