氢化物
四方晶系
顺磁性
各向异性
重费米子
格子(音乐)
凝聚态物理
晶体结构
结晶学
材料科学
化学
物理
超导电性
冶金
金属
量子力学
声学
作者
S. Mašková,E. Bauer,M. Giovannini,L. Havela
出处
期刊:Inorganics (Basel)
[Multidisciplinary Digital Publishing Institute]
日期:2023-10-18
卷期号:11 (10): 414-414
被引量:1
标识
DOI:10.3390/inorganics11100414
摘要
A hydride of Yb2Pd2Sn could be synthesized with approximately 2 H atoms per f.u. The hydrogenation leads to a volume expansion while preserving the tetragonal symmetry (P4/mbm). The lattice reaction is strongly anisotropic, and the 5% expansion in c is partly compensated by the 0.5% compression in a. The hydride is paramagnetic at least down to 0.5 K. Yb remains at or very close to the 3+ (4f13) state, as in Yb2Pd2Sn. Specific heat C/T vs. T shows an upturn existing already in Yb2Pd2Sn, but it is much more pronounced in the hydride (1.8 J/mol f.u. K2 for T → 0, i.e., more than twice higher than in its precursor). This is interpreted as lowering the Kondo temperature due to H bonding.
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