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Evidence of mixed valence in single crystals

✍ Scribed by G.D. Loula; L.M. da Silva; A.O. dos Santos; A.N. Medina; F.G. Gandra

Book ID
104080105
Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
256 KB
Volume
403
Category
Article
ISSN
0921-4526

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✦ Synopsis

In this paper we report on the magnetization and specific heat results on single crystals of the series (Eu,Yb)Ga 4 aiming to study a possible valence change on both RE ions. The results show a decrease on T N and unit cell volume due to the chemical pressure. The enhancement of the effective moment suggests the presence of Yb 3ΓΎ while the constancy of the saturation magnetization points to a fixed 2 ΓΎ valence for Eu.

πŸ“œ SIMILAR VOLUMES

Crystal growth of mixed-valence ammonium
Crystal growth of mixed-valence ammonium vanadates
✍ Tie-Zhen Ren; Zhong-Yong Yuan; Xiaodong Zou πŸ“‚ Article πŸ“… 2007 πŸ› John Wiley and Sons 🌐 English βš– 216 KB

## Abstract A new method has been developed for the synthesis of mixed‐valence ammonium vanadate crystals. Single crystals of (NH~4~)~2~V~3~O~8~ were synthesized on a large scale by hydrothermal reduction of NH~4~VO~3~ in ethanol‐H~2~O solutions in the presence of triblock copolymer Pluronic P123.

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