| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1609197 | Journal of Alloys and Compounds | 2015 | 4 Pages |
Abstract
Temperature-dependent Micro-Brillouin scattering studies of Ca2MgSi2O7 and Ca2ZnSi2O7 single crystals were performed. Step-like decrease of Brillouin shifts and strong broadening of Brillouin bands corresponding to the c33 elastic constant were observed at 351Â K for Ca2MgSi2O7 and 407Â K for Ca2ZnSi2O7. This behavior was attributed to coupling of strain to the square of the order parameter due to structural transitions into incommensurate phases. Analysis of the observed acoustic anomalies showed critical slowing down behavior of the relaxation time characterizing interaction between the order parameter and acoustic phonon.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
MirosÅaw MÄ
czka, Jerzy Hanuza, Alexander Kaminskii, Seiji Kojima,