TY - JOUR
T1 - The transformation behavior of M-type barium ferrites due to Co-Ti substitution
AU - Li, J.
AU - Zhang, H.
AU - Liu, Yinong
AU - Li, Q.
AU - Ma, G.
AU - Yang, Hong
PY - 2015
Y1 - 2015
N2 - © 2015, Springer Science+Business Media New York. In this paper, we synthesized Co–Ti equiatomic co-substitution of M-type barium ferrites [BaFe12−2x(CoTi)xO19, x = 1.00–1.30 with step of 0.05] by solid state reaction method. All samples exhibited a single-phase M-type barium ferrite structure, compared with pure M-type barium ferrite (x = 0.00). With increasing of Co–Ti content, saturation magnetization (Ms) decreased, gradually. However, coercivity (Hc) appeared decreased first and then increased after x = 1.20. The minimum value of coercivity was 258.08 Oe at x = 1.20. Meanwhile, magnetic permeability (μ) also first increased to a high value and then decreased rapidly after x = 1.20. The maximum value of μ reached about 25 (at x = 1.10). The appropriate contents of Co–Ti substitution makes the magnetocrystalline anisotropy transform from uniaxial to planar anisotropy. Due to Co–Ti substitution, the magnetocrystalline anisotropy constant decreases from a high value and reach a minimum value, and changes from positive to negative value, increases oppositely, this determines the changes of magnetic properties.
AB - © 2015, Springer Science+Business Media New York. In this paper, we synthesized Co–Ti equiatomic co-substitution of M-type barium ferrites [BaFe12−2x(CoTi)xO19, x = 1.00–1.30 with step of 0.05] by solid state reaction method. All samples exhibited a single-phase M-type barium ferrite structure, compared with pure M-type barium ferrite (x = 0.00). With increasing of Co–Ti content, saturation magnetization (Ms) decreased, gradually. However, coercivity (Hc) appeared decreased first and then increased after x = 1.20. The minimum value of coercivity was 258.08 Oe at x = 1.20. Meanwhile, magnetic permeability (μ) also first increased to a high value and then decreased rapidly after x = 1.20. The maximum value of μ reached about 25 (at x = 1.10). The appropriate contents of Co–Ti substitution makes the magnetocrystalline anisotropy transform from uniaxial to planar anisotropy. Due to Co–Ti substitution, the magnetocrystalline anisotropy constant decreases from a high value and reach a minimum value, and changes from positive to negative value, increases oppositely, this determines the changes of magnetic properties.
U2 - 10.1007/s10854-015-2712-1
DO - 10.1007/s10854-015-2712-1
M3 - Article
SN - 0957-4522
VL - 26
SP - 4668
EP - 4674
JO - Journal of Materials Science: Materials in Electronics
JF - Journal of Materials Science: Materials in Electronics
IS - 7
ER -