Elastic properties of the layered zintl-phase CaSi2

Authors
Vogg, G Brandt, MS Stutzmann, M
Citation
G. Vogg et al., Elastic properties of the layered zintl-phase CaSi2, PHYS ST S-A, 185(2), 2001, pp. 213-219
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH
ISSN journal
00318965 → ACNP
Volume
185
Issue
2
Year of publication
2001
Pages
213 - 219
Database
ISI
SICI code
0031-8965(20010616)185:2<213:EPOTLZ>2.0.ZU;2-K
Abstract
The elastic properties of CaSi2 are studied by X-ray analysis of strained s ilicide films grown by reactive deposition epitaxy on Si(111). The diffract ion linewidths are found to be mainly determined by heterogeneous strain wi th negligible size broadening. Homogeneous strain is induced by lattice mis match for epitaxial films thinner than 50 nm, and is thermally induced for thicker films. The isotropic and anisotropic Poisson ratios of CaSi2 are de termined as nu = 0.123(7) and nu (c) = 0.105(35), respectively.