Preparation, and Structural and Magnetic Properties of Ca Substituted Magnesium Ferrite with Composition MgCa_xFe_2−xO₄ (𝑥 = 0.00, 0.01, 0.03, 0.05, 0.07)

Table 4

The values of saturation magnetization (𝑀_𝑠), coercivity (𝐻_𝑐), residual magnetization (𝑀_𝑟), and Curie temperature (𝑇_𝐶) for pure and substituted MgF.

Number of Ca atoms substituted	Saturation magnetization; “𝑀𝑠” (emu/g)	Coercivity “𝐻𝑐”; (Oer)	Residual magnetization; “𝑀𝑟” (emu/g)	Curie temperature; “𝑇𝐶” (°C)
0.00	23.5	26	1.52	400
0.01	22.5	28	1.53	388
0.03	24.5	31	2.00	370
0.05	30.7	20.5	1.38	331
0.07	29.0	30	1.96	325