Abstract
Magnetic and magnetoelectric properties of Y-type hexaferrite single crystal Ba0.6Sr1.4Zn2Fe12O22 were investigated using vibrating sample magnetometer and ferromagnetic resonance (FMR) techniques. It was found that this compound orders magnetically below 400 K and magnetization exhibits a sharp peak at 331 K, which corresponds to magnetic transition from collinear ferrimagnetic phase to a proper screw spin phase with decreasing temperature. Magnetic hysteresis measurements showed stepwise behavior of initial magnetization curve due to sequential metamagnetic transitions with increasing magnetic field. Using novel and sensitive method of electrically modulated FMR it was shown that this Y-type hexaferrite has significant magnetoelectric coupling, which was determined quantitatively at room temperature. Obtained results show that Y-type hexaferrite Ba0.6Sr1.4Zn2Fe12O22 has a rare combination of magnetoelectric coupling and large magnetization at room temperature, which is important for applications in magnetoelectric devices.
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