Abstract
Polycrystalline samples of Ba0.5Sr1.5Zn2(Fe0.96Al0.04)12O22 were synthesized by solid-state reaction method, and structural, magnetic and dielectric properties were investigated. The magnetic data indicate four magnetic spin-order structures exist in the samples. The Curie temperature is found to be 712 K. The sample also exhibits obvious dispersion in dielectric permittivity and dielectric loss values as a function of the frequency at room temperature, which may be interpreted as Maxwell-Wagner type dielectric relaxation.
Funding
The work was supported by Natural Science Foundation of China (Grant Nos. 61176011, 61376129, and 51302084), Natural Science Foundation of Shanghai (Nos. 11ZR1410800 and 13ZR1412200), KLIFMD-2011-06, and Fundamental Research Funds for the Central Universities (ECNU).