Figure 6
From: Inverse Tunnel Magnetocapacitance in Fe/Al-oxide/Fe3O4
Frequency dependence of the inverse TMC. (a) Inverse TMC effect of Fe/AlO x /Fe3O4 MTJs with an iTMR of 15% (sample C). The frequency is 20, 40, 1.2 k and 4 kHz and the applied bias voltage is 0.09 V. The iTMC can reach 11.4 % at 20 Hz. Frequency dependence of (b) iTMC and iTMR and (c) the capacitance C P(AP) in the P(AP) configuration. The experimental results can be well reproduced by DF model combined with Zhang formula, parabolic barrier approximation, and SDD model, described by equations (1)–(5).
