The microstructural, spectral, magnetic and electric properties of hexaferrites Ba_0.40Sr_0.60-xNd_xFe_12.00-xZn_xO₁₉ (0.00 ¡Â x ¡Â 0.30) synthesized by the solid-state reaction route have been studied. XRD results confirmed that the hexaferrites with Nd-Zn content (x) of 0.00 ¡Â x ¡Â 0.24 were single M-type phase, and the hexaferrite with x = 0.30 exhibited the M-type phase and impurity phase. The remanence (B_r) increased with x from 0.00 to 0.06, and then decreased when x ¡Ã 0.06. The intrinsic coercivity (H_cj) and magnetic induction coercivity (H_cb) decreased with x from 0.00 to 0.30. B_r indicated a linear decreasing behavior with increasing temperature from 20 ^oC to 140 ^oC. H_cj raised linearly with increasing temperature from 20 ^oC to 140 ^oC. The value of a_Br basically remained constant with Nd-Zn content (x). The value of a_Hcj increased with x from 0.00 to 0.12, and began to decrease when x ¡Ã 0.12. The electrical resitivity (¥ñ) presented a decreasing trend with x from 0.00 to 0.30.

Keywords: M-type hexaferrites, Solid-state reaction route, X-ray diffraction, Magnetic measurements