Structural and Mössbauer Spectral Studies of Nanosized Aluminum Doped Manganese Zinc Ferrites

Table 4

Room temperature Mössbauer effect parameters for Mn_1.05Zn_0.05Al_𝑥Fe_1.9−𝑥O₄ system as a function of 𝑥.

Composition	Site	Isomer shift^∗	Quadrupole splitting	𝐻hfs	Fe^3+(B)/Fe^3+(A)
(𝑥)		(𝛿±0.01)mm/s	(Δ±0.01)mm/s	(±1.0 T)	(%)
0.4	B	0.18	0.00	42.1	1.79
	A	0.15	0.00	39.5
0.6	B	0.17	0.00	40.3	1.63
	A	0.15	0.00	37.4
0.8	B	0.16	0.00	39.0	1.44
	A	0.14	0.00	35.1
1.0	B	0.17	0.00	37.8	1.21
	A	0.16	0.00	33.1

^∗Isomer shift given relative to 𝛼-Fe.