Dynamic properties of cluster glass in La0. 25Ca0. 75MnO3 nanoparticles
XH Huang, JF Ding, ZL Jiang, YW Yin, QX Yu… - Journal of Applied …, 2009 - pubs.aip.org
The dynamic magnetic properties of cluster glass in La 0.25 Ca 0.75 MnO 3 nanoparticles
with average particle size range from 40 to 1000 nm have been investigated by measuring
the frequency and dc magnetic field (H) dependencies of the ac susceptibility. The frequency-
dependent T f, the freezing temperature of the ferromagnetic clusters determined by the
peak in the real part of the ac susceptibility χ′ versus T curve with H= 0, is fit to a power
law. The relaxation time constant τ 0 decreases as the particle size increases from 40 to 350 …
with average particle size range from 40 to 1000 nm have been investigated by measuring
the frequency and dc magnetic field (H) dependencies of the ac susceptibility. The frequency-
dependent T f, the freezing temperature of the ferromagnetic clusters determined by the
peak in the real part of the ac susceptibility χ′ versus T curve with H= 0, is fit to a power
law. The relaxation time constant τ 0 decreases as the particle size increases from 40 to 350 …
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