Research Article

Rietveld Structure Refinement and Cation Distribution of C r 𝟑 + Substituted Nanocrystalline Ni-Zn Ferrites

Table 4

Band positions ( 𝑣 1 and 𝑣 2 ), force constants ( 𝐾 𝑜 and 𝐾 𝑡 ), and bond lengths ( 𝑅 A and 𝑅 B ) of Ni0.7Zn0.3 F e 2 𝑥 C r 𝑥 O4.

Comp. “ 𝑥 𝑣 1 (cm−1) 𝑣 2 (cm−1) 𝐾 𝑜 × 1 0 5 (dyne/cm) 𝐾 𝑡 × 1 0 5 (dyne/cm) 𝑅 A (Å) 𝑅 B (Å)

0.05754001.4781.5090.6911.207
0.15794061.4991.5510.6911.209
0.25834061.5201.5480.6911.211
0.35874171.5411.6290.6911.206
0.45884181.5461.6330.6911.201
0.55894201.5511.6450.6911.194