Synthesis, Structure, and Physical Properties of YbNi{sub 3}Al{sub 9.23}
The physical properties of YbNi{sub 3}Al{sub 9.23}, including the crystal structure, magnetization, specific heat, valence, and electrical resistivity, are reported. Single crystal X-ray diffraction reveals that the compound crystallizes with the rhombohedral space group R32 and has unit cell parameters a=7.2443(3) Å and c=27.251(3) Å with some crystallographic disorder on an Al site. The compound orders antiferromagnetically at T{sub N}=3 K despite the presence of strong ferromagnetic correlations, accompanied by a spin flop-like transition to a moment-aligned rate above 0.1 T. X-ray absorption spectroscopy and magnetic susceptibility measurements indicate a localized Yb{sup 3+} electronic configuration, while the Sommerfeld coefficient in the magnetically ordered state was determined to be approximately 135 mJ/mol-K{sup 2}, suggesting moderately heavy fermion behavior. Therefore, these data indicate a balance between competing Ruderman-Kittel-Kasuya-Yosida (RKKY) and Kondo interactions in YbNi{sub 3}Al{sub 9.23} with a somewhat dominant RKKY interaction that leads to a relatively high ordering temperature.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- Chemical Sciences Division
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 1051781
- Report Number(s):
- LBNL-5160E
- Journal Information:
- Journal of Physics. Condensed Matter, Vol. 23, Issue 8; Related Information: Journal Publication Date: March 2, 2011; ISSN 0953-8984
- Country of Publication:
- United States
- Language:
- English
Similar Records
High-magnetic-field magnetization and magnetoresistance of a transition-metal-base spin glass: Zr-Mn
Drastic enhancement of magnetic critical temperature and amorphization in topological magnet EuSn2P2 under pressure