Journal
EUROPEAN PHYSICAL JOURNAL B
Volume 71, Issue 3, Pages 407-410Publisher
SPRINGER
DOI: 10.1140/epjb/e2009-00222-4
Keywords
-
Categories
Funding
- Deutsche Forschungsgemeinschaft [SFB 491, KL306/38-4]
- EU
- DAAD/GRICES (Accoes Integradas Luso-Alemas)
Ask authors/readers for more resources
Multiglass materials with simultaneous occurrence of two different glassy states extend the frame of conventional multiferroicity, which is devoted to crystalline materials with coexisting uniform long-range electric and magnetic ordering. The concept applies to Sr0.98Mn0.02TiO3 ceramics, where A-site substituted Mn2+ ions are at the origin of both a polar and a spin cluster glass. Spin freezing is initiated below the dipolar glass temperature, T-g (e) a parts per thousand 38 K, which is seemingly indicated by a divergence of the nonlinear susceptibility, chi(3). Below T-g (m) a parts per thousand 34 K both glass phases are independently verified by memory and rejuvenation effects. Biquadratic interaction of the Mn2+ spins with ferroelectric correlations of their off-center pseudospins in the incipient ferroelectric host crystal SrTiO3 explains the high spin glass temperature and comparably strong third-order magnetoelectric coupling between the polar and the magnetic degrees of freedom. Preliminary results on the related compound K0.97Mn0.03TaO3 favorably comply with the magnetoelectric multiglass concept.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available