USE OF DIFFUSIONAL CREEP TO INVESTIGATE MASS-TRANSPORT IN (LA, SR)MNO3

Authors
WOLFENSTINE J GORETTA KC COOK RE
Citation
J. Wolfenstine et al., USE OF DIFFUSIONAL CREEP TO INVESTIGATE MASS-TRANSPORT IN (LA, SR)MNO3, Solid state ionics, 92(1-2), 1996, pp. 75-83
Citations number
39
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical
Journal title
Solid state ionics → ACNP
ISSN journal
01672738
Volume
92
Issue
1-2
Year of publication
1996
Pages
75 - 83
Database
ISI
SICI code
0167-2738(1996)92:1-2<75:UODCTI>2.0.ZU;2-T
Abstract
The steady-state creep rate of La1-xSrxMnO3 (x = 0.10, 0.15 and 0.25) decreased with increasing Sr content in a regime where diffusional cre ep is the dominant deformation mechanism. This composition effect when compared to existing point defect models suggested that the rate-cont rolling species for mass transport in (La, Sr)MnO3 is lattice diffusio n of the cations, either lanthanum or manganese. This is in agreement with previous creep (based on an activation energy comparison) and sin tering results. Diffusional creep can be used effectively to investiga te mass transport in (La, Sr)MnO3.