Body-centered-cubic structure and weak anharmonic phonon scattering in tungsten

Giant anharmonic phonon scattering in PbTe.

Understanding the microscopic processes affecting the bulk thermal conductivity is crucial to develop more efficient thermoelectric materials. PbTe is currently one of the leading thermoelectric materials, largely thanks to its low thermal conductivity. However, the origin of this low thermal conductivity in a simple rocksalt structure has so far been elusive. Using a combination of inelastic n...

The Anharmonic Electron-Phonon Problem.

J. K. Freericks,1 Mark Jarrell,2 and G. D. Mahan3 1Department of Physics, Georgetown University, Washington, D.C. 20057-0995 2Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221 3Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200 and Solid State Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6030 ...

Cryogenic nanoindentation size effect in [0 0 1]-oriented face-centered cubic and body- centered cubic single crystals

Body-centered-cubic Ni and its magnetic properties.

The body-centered-cubic (bcc) phase of Ni, which does not exist in nature, has been achieved as a thin film on GaAs(001) at 170 K via molecular beam epitaxy. The bcc Ni is ferromagnetic with a Curie temperature of 456 K and possesses a magnetic moment of 0.52+/-0.08 micro(B)/atom. The cubic magnetocrystalline anisotropy of bcc Ni is determined to be +4.0x10(5) ergs x cm(-3), as opposed to -5.7x...

Grain boundary energies in body-centered cubic metals

Atomistic simulations using the embedded atom method were employed to compute the energies of 408 distinct grain boundaries in bcc Fe and Mo. This set includes grain boundaries that have tilt, twist, and mixed character and coincidence site lattices ranging from R3 to R323. The results show that grain boundary energies in Fe and Mo are influenced more by the grain boundary plane orientation tha...