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- Title
Glassy magnetic behavior in the metamagnetic DyAlO doped with Cr.
- Authors
Escudero, R.; Ruiz-Herrera, B.; Jimenez, M.; Morales, F.
- Abstract
Magnetic properties of DyAl0.926Cr0.074O3 and DyAlO3 were studied. We found that both the compounds are antiferromagnetic with a low Néel transition temperature. At higher temperatures the magnetic characteristics show a Curie-Weiss dependence. Néel temperature disappears when a field of about 2 T is applied, the system changes from an antiferromagnetic to a weak ferromagnetic behavior due to a metamagnetic transition. Furthermore, AC magnetic measurements in the Cr-doped compound, at different frequencies, show a spin glass-like behavior. These transitions were studied and corroborated by specific heat measurements. We found the presence of metamagnetism and spin glass in the compound doped with chromium, determining that the small addition of chromium atoms modifies the magnetic properties of the compound DyAlO3, resulting in new features such as the spin glass-like behavior.
- Subjects
DYSPROSIUM alloys; MEASUREMENT of magnetic properties; ALUMINUM oxide; TRANSITION temperature; DOPING agents (Chemistry); CHROMIUM; SPIN glasses; MAGNETIZATION
- Publication
Journal of Materials Science, 2013, Vol 48, Issue 20, p7238
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-013-7540-1