  Scaling equations for the Kondo lattice in the paramagnetic and magnetically
ordered phases are derived to two-loop order with account of spin dynamics. The
results are applied to describe various mechanisms of the non-Fermi-liquid
(NFL) behavior in the multichannel Kondo-lattice model where a fixed point
occurs in the weak-coupling region. The corresponding temperature dependences
of electronic and magnetic properties are discussed. The model describes
naturally formation of a magnetic state with soft boson mode and small moment
value. An important role of Van Hove singularities in the magnon spectral
function is demonstrated. The results are rather sensitive to the type of
magnetic ordering and space dimensionality, the conditions for NFL behavior
being more favorable in the antiferromagnetic and 2D cases.
