The anelastic spectra of La1xCaxMnO3 with x just below 0.50 have been measured in order to better characterize the nature of the phase transitions and microscopic lattice relaxation processes present in these materials. A peak in the imaginary part of the elastic susceptibility around 30K below the Curie temperature TC presents a behaviour typical of inhomogeneous and glass-like systems. We have performed a quantitative analysis calculating the temperature dependent distribution function of the energy barriers of the fluctuations characterizing this nanostructured state.
Dynamics of the nanophase separation in manganites studied by anelastic spectroscopy
FERRETTI, MAURIZIO
2003-01-01
Abstract
The anelastic spectra of La1xCaxMnO3 with x just below 0.50 have been measured in order to better characterize the nature of the phase transitions and microscopic lattice relaxation processes present in these materials. A peak in the imaginary part of the elastic susceptibility around 30K below the Curie temperature TC presents a behaviour typical of inhomogeneous and glass-like systems. We have performed a quantitative analysis calculating the temperature dependent distribution function of the energy barriers of the fluctuations characterizing this nanostructured state.
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