Fig. 4 | Nature Communications

Fig. 4

From: Colossal tunability in high frequency magnetoelectric voltage tunable inductors

Fig. 4

First principles calculation of NiFe2O4-CoFe2O4 solid solution. a Energy surfaces for cubic anisotropy with (i) K1  < 0, (ii) K1 = 0, (iii) K1 > 0. Blue arrow shows the direction of easy axis. b Cation distribution of Fe (brown) and Co/Ni (blue) on the B-sites of the spinel structure (space groups Imma) used in the calculations. c Magnetocrystalline anisotropy K1 of Ni1-xCoxFe2O4; d Magnetostriction λ100 of Ni1-xCoxFe2O4; e Saturation magnetization per molecule (in μB) of Ni1-xCoxFe2O4

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