Diluted magnetism in Mn-doped SrZnO2 single crystals
Journal
Journal of Applied Physics
Journal Volume
114
Journal Issue
12
Date Issued
2013
Author(s)
Abstract
We have investigated the magnetic properties of Mn- and Cu-substituted SrZnO2 single crystals (SrZn1−xMnxO2 and SrZn1−xCuxO2). We observed signatures of weak ferromagnetism as a sharp increase of magnetic susceptibility below 5 K even in the low-percentage (x = 0.01) of Mn-substituted single crystals. Magnetic susceptibility data measured parallel or perpendicular to the ab-plane yield anisotropic behavior with Curie–Weiss temperature of about −320 K and −410 K, respectively, suggesting the presence of strong antiferromagnetic couplings among Mn at high temperatures, similar to the Mn-doped ZnO and Fe-doped BaTiO3. In contrast, the SrZn0.99Cu0.01O2 crystal shows paramagnetic behavior down to 2 K.
Type
journal article