Mutual control of magnetization and electrical polarization by electric and magnetic fields at room temperature in Y-type BaSrCo2−<i>x</i>Zn<i>x</i>Fe11AlO22 ceramics

S. Hirose, Kohei Haruki, Akira Ando, T. Kimura

Applied Physics Letters · 2014 · 91 citations · 16 references

Concepts

Abstract

Magnetoelectric (ME) properties were investigated for BaSrCo2−xZnxFe11AlO22 ceramics with the Y-type hexaferrite structure. This system exhibits a magnetic ordering above room temperature (RT) and high electrical resistivity exceeding 500 MΩ·cm by annealing under 10 atm O2. It is found that the samples with x ≤ 0.4 exhibit the robust ME effect with a reversal of electrical polarization induced by a low magnetic field at RT. Moreover, the electric-field-induced magnetization switching is also observed at RT. These results clearly demonstrate the mutual control of magnetization and electrical polarization at RT in the Y-type hexaferrite system.

References

16