Structural and Magnetic Study of YCrO$_{3}$ Doped with Calcium*

In recent years there has been much interest in multiferroic materials. The coupling between ferromagnetic and ferroelectricity on the same material is important from both basic science and applications. Here we address the behavior observed in YCrO$_{3}$ doped with Ca. The pure material presents a ferroelectric transition at about 473 K, and ferromagnetism at about 140 K. The magnetic transition is due to canted spins, so ferromagnetism and antiferromagnetism coexist. In this presentation we will show the studies on Ca doped YCrO$_{3}$. We show that Ca does not affect the magnetic transition ($T_{N}$), but the dielectric behavior is strongly affected by the increase of the electrical conductivity ($\sigma_{ac}$) in the range of 35 to 200 $^{\circ}$C.