Abstract
In this work, we have synthesized a series of YxCo2−xMnO4 (0 ≤ x ≤ 0.2) samples and study the effect of Y-doping on their structural, magnetic, and electric properties. All the samples have the cubic spinel structure with Fd3m space group. The magnetic characterization indicates that with increasing Y-content up to 0.2, the ferrimagnetic transition temperature increases from 180 to 186 K. Our experiment results also indicate that the Y-doped samples exhibit the characteristics of ferroelectricity at room temperature. Furthermore, Y substitution in Co2MnO4 spinel brings in the balance of structural distortion and magnetic exchange interaction, which affects both ferrimagnetism and ferroelectricity. And, these Y-doped Co2MnO4 spinel samples can be eventually utilized for the applications of multiferroic devices.
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