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Origin of R-Dependent Dielectric Anomalies in RMnO3 with R = Y, Ho, Er, Tm, Yb and Lu.
- Source :
-
Ferroelectrics . 2009, Vol. 380 Issue 1, p38-47. 10p. 1 Diagram, 1 Chart, 11 Graphs. - Publication Year :
- 2009
-
Abstract
- A series of hexagonal polycrystalline RMnO3 (R = Y, Ho, Er, Tm, Lu and Yb) samples are systematically prepared, and their temperature-dependent magnetic susceptibility, specific heat and dielectric properties are measured, in order to investigate the origin of R-dependent dielectric behavior. The dielectric anomalies are found to be strongly correlated with the antiferromagnetic transitions. Both occur near the same temperatures (70∼100 K) and have a very similar R-dependency. Further analysis suggests that the origin of R-dependent dielectric anomalies in the ferroelectric phases could be the variation of strength of antiferromagnetic interaction via the change of in-plane lattice parameters. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00150193
- Volume :
- 380
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Ferroelectrics
- Publication Type :
- Academic Journal
- Accession number :
- 41038831
- Full Text :
- https://doi.org/10.1080/00150190902872834