標題: | Intermediate-Valence Ytterbium Compound Yb4Ga24Pt9: Synthesis, Crystal Structure, and Physical Properties |
作者: | Sichevych, Olga Prots, Yurii Utsumi, Yuki Akselrud, Lev Schmidt, Marcus Burkhardt, Ulrich Coduri, Mauro Schnelle, Walter Bobnar, Matej Wang, Yu-Ting Wu, Yu-Han Tsuei, Ku-Ding Tjeng, Liu Hao Grin, Yuri 電子物理學系 Department of Electrophysics |
公開日期: | 7-八月-2017 |
摘要: | The title compound was synthesized by a reaction of the elemental educts in a corundum crucible at 1200 degrees C under an Ar atmosphere. The excess of Ga used in the initial mixture served as a flux for the subsequent crystal growth at 600 degrees C. The crystal structure of Yb4Ga24Pt9 was determined from single-crystal X-ray diffraction data: new prototype of crystal structure, space group C2/m, Pearson symbol mS74, a = 7.4809(1) angstrom, b = 12.9546(2) angstrom, c = 13.2479(2) angstrom, beta = 100.879(1)degrees, V = 1260.82(6) angstrom(3), R-F = 0.039 for 1781 observed reflections and 107 variable parameters. The structure is described as an ABABB stacking of two slabs with trigonal symmetry and compositions Yb4Ga6 (A) and Ga12Pt6 (B). The hard. X-ray photoelectron spectrum (HAXPES) of Yb4Ga24Pt9 shows both Yb2+ and Yb3+ contributions as evidence of an intermediate valence state of ytterbium The evaluated Yb valence of similar to 2.5 is in good agreement with the results obtained from the magnetic susceptibility measurements. The compound is, a bad metallic conductor. |
URI: | http://dx.doi.org/10.1021/acs.inorgchem.7b01530 http://hdl.handle.net/11536/145898 |
ISSN: | 0020-1669 |
DOI: | 10.1021/acs.inorgchem.7b01530 |
期刊: | INORGANIC CHEMISTRY |
Volume: | 56 |
起始頁: | 9343 |
結束頁: | 9352 |
顯示於類別: | 期刊論文 |