Journal
PHYSICAL REVIEW B
Volume 92, Issue 14, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.92.144110
Keywords
-
Funding
- NSF [1410514]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1410514] Funding Source: National Science Foundation
Ask authors/readers for more resources
We have discovered stoichiometric LiB with hexagonal boron layers by compressing known LiB0.9 with linear boron chains. The sp to sp(2) rebonding occurred at room temperature and pressures above 21 GPa. The study was motivated by a long-standing prediction that LiB in the stable layered configuration could be a close analog to the MgB2 superconductor. Apparent stacking disorder in LiB and a stoichiometry shift in LiBy (down to y approximate to 0.75) made material characterization a challenge. Ab initio modeling allowed us to establish the pressure-dependent composition of LiB y and predict related stable structures overlooked in previous studies. Synchrotron powder diffraction data on quenched samples in the diamond anvil cell indicate that LiB remains metastable at ambient pressure.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available