Peculiarities of the valence state of Ce and Yb in RM4Al8 (R = rare earth; M = Cr, Mn, Fe, Cu)

Autor:	V.G. Synjushko, I. D. Shcherba, R.R. Kutjanskyj, I. I. Margolych, B. M. Yatsyk, Yu.D. Tsybukh, M.D. Koterlyn, A.P. Kushnir
Rok vydání:	1996
Předmět:	Materials science Valence (chemistry) Condensed matter physics Rare earth Analytical chemistry Atmospheric temperature range Condensed Matter Physics Magnetic susceptibility Electronic Optical and Magnetic Materials Ion
Zdroj:	Journal of Magnetism and Magnetic Materials. :688-689
ISSN:	0304-8853
Popis:	L III X-ray absorption (77 and 300 K) and magnetic susceptibility measurements have been performed on RM 4 Al 8 compounds. The mixed valence state of Ce was observed in CeM 4 Al 8 with M = Cr, Mn, Fe. In the case of M = Cu the Ce 3+ state is stabilized, but the Yb-based compound shows intermediate valence ( V Yb ≈ 2.5). In other Yb-based compounds, the Yb ion is mainly in the trivalent state. The temperature dependence of the magnetic susceptibility of RFe 4 Al 8 compounds fits the Curie-Weiss law over a wide temperature range.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a74bdebcc3738eb3d376c0cb9cdc33bd https://doi.org/10.1016/0304-8853(95)00988-4 Zobrazit plný text záznamu Full Text from ScienceDirect