  Elastic neutron scattering experiments performed in semi-conducting
La(1-x)Ca(x)MnO3 single crystals (x=0.05, 0.08), reveal new features in the
problem of electronic phase separation and metal insulator transition. Below
TN, the observation of a broad magnetic modulation in the q-dependent
scattering intensity, centered at nearly identical qm whatever the q direction,
can be explained by a liquid-like spatial distribution of similar magnetic
droplets. A semi-quantitative description of their magnetic state, diameter,
and average distance, can be done using a two-phase model. Such a picture can
explain the anomalous characteristics of the spin wave branches and may result
from unmixing forces between charge carriers predicted from the s-d model.
