TY - JOUR
T1 - Chemical short-range order and lattice deformations in Mgy Ti1-y Hx thin films probed by hydrogenography
AU - Gremaud, R.
AU - Baldi, A.
AU - Gonzalez-Silveira, M.
AU - Dam, B.
AU - Griessen, R.
PY - 2008/4/8
Y1 - 2008/4/8
N2 - A multisite lattice gas approach is used to model pressure-optical- transmission isotherms (PTIs) recorded by hydrogenography on Mgy Ti1-y Hx sputtered thin films. The model reproduces the measured PTIs well and allows us to determine the chemical short-range order parameter s. The s values are in good agreement with those determined from extended x-ray absorption fine structure measurements. Additionally, the PTI multisite modeling yields a parameter L that accounts for the local lattice deformations with respect to the average Mgy Ti1-y lattice given by Vegard's law. It is thus possible to extract two essential characteristics of a metastable alloy from hydrogenographic data.
AB - A multisite lattice gas approach is used to model pressure-optical- transmission isotherms (PTIs) recorded by hydrogenography on Mgy Ti1-y Hx sputtered thin films. The model reproduces the measured PTIs well and allows us to determine the chemical short-range order parameter s. The s values are in good agreement with those determined from extended x-ray absorption fine structure measurements. Additionally, the PTI multisite modeling yields a parameter L that accounts for the local lattice deformations with respect to the average Mgy Ti1-y lattice given by Vegard's law. It is thus possible to extract two essential characteristics of a metastable alloy from hydrogenographic data.
UR - http://www.scopus.com/inward/record.url?scp=42049102864&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.77.144204
DO - 10.1103/PhysRevB.77.144204
M3 - Article
AN - SCOPUS:42049102864
SN - 1098-0121
VL - 77
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 14
M1 - 144204
ER -