THERMAL-EXPANSION STUDY OF ORDERED AND DISORDERED FE3AL - AN EFFECTIVE APPROACH FOR THE DETERMINATION OF VIBRATIONAL ENTROPY

Authors
MUKHERJEE GD BANSAL C CHATTERJEE A
Citation
Gd. Mukherjee et al., THERMAL-EXPANSION STUDY OF ORDERED AND DISORDERED FE3AL - AN EFFECTIVE APPROACH FOR THE DETERMINATION OF VIBRATIONAL ENTROPY, Physical review letters, 76(11), 1996, pp. 1876-1879
Citations number
25
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
76
Issue
11
Year of publication
1996
Pages
1876 - 1879
Database
ISI
SICI code
0031-9007(1996)76:11<1876:TSOOAD>2.0.ZU;2-B
Abstract
Thermal expansion measurements have been performed on chemically disor dered and D0(3) ordered Fe3Al alloy using the capacitance dilatometric method. A semiclassical model has been used to obtain the anharmonici ty parameters and accurate values of the Debye and Einstein temperatur es. An estimate of the vibrational entropy difference between the orde red and disordered phases of the alloy is also obtained using this app roach.