Study of the Effect of Quenching on Microstructural and Magnetic Properties of Cu-Doped Mg-Ferrite

Table 3

Mossbauer parameters for furnace-cooled and quenched Mg_1-xCu_xFe₂O₄ samples after sintering at 1200°C.

Copper content	Site occupancy	Isomer shift, δ (mm/s)		Quadrupole splitting, (mm/s)		Hyperfine field, Hhf (kG)		Relative area, A (%)
		Furnace-cooled	Quenched	Furnace-cooled	Quenched	Furnace-cooled	Quenched	Furnace-cooled	Quenched
x = 0.0	B	0.330	0.314	0.232	0.080	493.583	483.181	61.9	61.8
	B	0.286	0.265	0.000	0.000	473.591	460.300
	A	0.330	0.251	0.431	0.499	429.129	389.011	38.1	38.2
	A	0.262	0.331	0.000	0.828	456.518	430.809
x = 0.1	B	0.383	0.316	0.362	0.000	479.924	479.369	61.1	62.4
	B	0.428	0.278	0.152	0.000	475.169	460.032
	A	0.459	0.375	0.444	0.000	450.737	406.684	38.9	37.6
	A	0.273	0.290	0.433	0.000	363.255	441.204
x = 0.2	B	0.452	0.314	0.499	0.191	468.198	488.309	61.8	62.8
	B	0.260	0.291	0.293	0.000	471.252	466.933
	A	0.349	0.337	0.037	0.000	438.897	412.492	38.2	37.2
	A	0.434	0.277	0.000	0.020	412.217	447.696
x = 0.3	B	0.323	0.308	0.009	0.202	490.436	483.249	61.8	63.1
	B	0.272	0.274	0.000	0.000	468.369	460.480
	A	0.324	0.321	0.216	0.269	415.907	387.688	38.2	36.9
	A	0.282	0.279	0.000	0.020	450.879	438.040
x = 0.4	B	0.339	0.344	0.080	0.090	495.884	487.695	62.4	63.8
	B	0.273	0.294	0.000	0.000	470.346	464.775
	A	0.276	0.265	0.000	0.462	400.490	445.160	37.6	36.2
	A	0.291	0.393	0.388	0.008	450.624	413.646
x = 0.5	B	0.369	0.343	0.138	0.050	496.815	485.470	62.9	63.3
	B	0.278	0.281	0.000	0.070	473.511	462.075
	A	0.323	0.378	0.757	0.000	414.853	401.219	37.1	36.7
	A	0.276	0.303	0.000	0.738	454.298	440.170