Structural and Elastic Properties of Li-Ni Ferrite

Table 3

IR absorption bands of 𝐿𝑖_{0.5−0.5𝑥}𝑁𝑖_𝑥𝐹𝑒_{2.5−0.5𝑥}𝑂₄.

Sample (𝑥)	Tetrahedral site (𝐴-site)				Octahedral site (𝐵-site)
	Fe^3+-O^2− (cm^−1)				Li-O (LiO4)	Fe^3+-O^2−	Divalent Fe^2+
	𝜈1(1)	𝜈1(2)	𝜈^a4	𝜈^∗1	𝜈2(1)	𝜈^a2	𝜈3	𝜈4	𝜈th
0.0	707	667(sh)	576	543(sh)	450	382	327	267	786
0.1	707	672(sh)	577	528(sh)	458	382	331	255	784
0.3	706	—	572	—	—	386	331	257	768
0.5	—	—	576	—	—	389	—	261	776
0.7	—	—	573	—	—	393	—	259	772
0.9	—	—	589	—	—	404	—	255	772
1.0	—	—	590	—	—	404	—	261	770

^aprimary, sh: shoulder.