Figure 3
From: Uncoupled surface spin induced exchange bias in α-MnO2 nanowires
Magnetic behavior of α-MnO2 nanowires.
M(T) vs. T, 1/M(T) vs. T, dM(T)/dT vs. T curves after zero field cooling (ZFC) and after field cooling (FC). The ZFC 1/M(T) vs. T curve is fitted with the Curie-Weiss law: 1/χ = (T-θ)/C, using θ = −166 K and C = 1.816, as indicated by the dot-dashed line.
