“…The RT H c1 values increase gradually as the Mn content increases in the sample, which resulted in an overall decrease in the magnetization value. Due to the contribution of all three anisotropies (magnetocrystalline anisotropy, shape anisotropy, and stress anisotropy), the coercivity was found to obey eqn (4), 56 H c1 = E + FT p + GT 2 P + HT 3 P where,
,
,
and
.…”