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Valence fluctuations in the 3D + 3 modulated Yb3Co4Ge13 Remeika phase
Dalton Transactions ( IF 3.5 ) Pub Date : 2021-09-13 , DOI: 10.1039/d1dt01972d Manuel Feig 1, 2 , Lev Akselrud 2, 3 , Mykhaylo Motylenko 4 , Matej Bobnar 2 , Jörg Wagler 5 , Kristina O Kvashnina 6, 7 , Volodymyr Levytskyi 1 , David Rafaja 4 , Andreas Leithe-Jasper 2 , Roman Gumeniuk 1, 2
Dalton Transactions ( IF 3.5 ) Pub Date : 2021-09-13 , DOI: 10.1039/d1dt01972d Manuel Feig 1, 2 , Lev Akselrud 2, 3 , Mykhaylo Motylenko 4 , Matej Bobnar 2 , Jörg Wagler 5 , Kristina O Kvashnina 6, 7 , Volodymyr Levytskyi 1 , David Rafaja 4 , Andreas Leithe-Jasper 2 , Roman Gumeniuk 1, 2
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Yb3Co4Ge13 is the first example of a Remeika phase with a 3D + 3 [space group P![[4 with combining macron]](https://www.rsc.org/images/entities/char_0034_0304.gif)
3n(α,0,0)000(0,α,0)000(0,0,α)000; a = 8.72328(1) Å, α = 0.4974(2)] modulated crystal structure. A slight shift of the composition towards higher Yb-content (i.e. Yb3.2Co4Ge12.8) leads to the disappearance of the satellite reflections and stabilization of the disordered primitive cubic [space group Pm![[3 with combining macron]](https://www.rsc.org/images/entities/char_0033_0304.gif)
n, a = 8.74072(2) Å] Remeika prototype structure. The stoichiometric structurally modulated germanide is a metal with hole-like charge carriers, where Yb-ions are in a temperature-dependent intermediate valence state varying from +2.60 to +2.66 for the temperature range 85–293 K. The valence fluctuations have been investigated by means of temperature dependent X-ray absorption spectroscopy, magnetic susceptibility and thermopower measurements.
中文翻译：
3D + 3 调制 Yb3Co4Ge13 Remeika 相的价态波动
Yb 3 Co 4 Ge 13是 Remeika 相的第一个例子，具有 3 D + 3 [空间群P 3 n ( α ,0,0)000(0, α ,0)000(0,0, α )000 ; a = 8.72328(1) Å, α = 0.4974(2)] 调制晶体结构。成分向更高 Yb 含量（即Yb 3.2 Co 4 Ge 12.8）的轻微偏移导致卫星反射消失和无序原始立方体 [空间群Pm n , a= 8.74072(2) Å] Remeika 原型结构。化学计量结构调制的锗化物是一种具有空穴状电荷载流子的金属，其中 Yb 离子处于温度相关的中间价态，在 85-293 K 的温度范围内从 +2.60 变化到 +2.66。已经研究了价态波动通过温度相关的 X 射线吸收光谱、磁化率和热电势测量。
更新日期：2021-09-13
3n(α,0,0)000(0,α,0)000(0,0,α)000; a = 8.72328(1) Å, α = 0.4974(2)] modulated crystal structure. A slight shift of the composition towards higher Yb-content (i.e. Yb3.2Co4Ge12.8) leads to the disappearance of the satellite reflections and stabilization of the disordered primitive cubic [space group Pmn, a = 8.74072(2) Å] Remeika prototype structure. The stoichiometric structurally modulated germanide is a metal with hole-like charge carriers, where Yb-ions are in a temperature-dependent intermediate valence state varying from +2.60 to +2.66 for the temperature range 85–293 K. The valence fluctuations have been investigated by means of temperature dependent X-ray absorption spectroscopy, magnetic susceptibility and thermopower measurements.
中文翻译：
3D + 3 调制 Yb3Co4Ge13 Remeika 相的价态波动
Yb 3 Co 4 Ge 13是 Remeika 相的第一个例子，具有 3 D + 3 [空间群P
3 n ( α ,0,0)000(0, α ,0)000(0,0, α )000 ; a = 8.72328(1) Å, α = 0.4974(2)] 调制晶体结构。成分向更高 Yb 含量（即Yb 3.2 Co 4 Ge 12.8）的轻微偏移导致卫星反射消失和无序原始立方体 [空间群Pm n , a= 8.74072(2) Å] Remeika 原型结构。化学计量结构调制的锗化物是一种具有空穴状电荷载流子的金属，其中 Yb 离子处于温度相关的中间价态，在 85-293 K 的温度范围内从 +2.60 变化到 +2.66。已经研究了价态波动通过温度相关的 X 射线吸收光谱、磁化率和热电势测量。
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