The magnetic properties of (La<Subscript>1 − x </Subscript>Sr<Subscript> x </Subscript>)MnO<Subscript>3</Subscript> crystals have been studied. The ac susceptibility χ=χ′ + iχ″ has been measured at frequencies ranging from 10 Hz to 1 000 Hz. The x=0.25 crystal shows a typical ferromagnetic behaviour with a dimensionless SI susceptibility of 6 below T...</subscript></subscript></subscript></subscript>

Molecular dynamics simulations have been performed for a two-dimensional fluid with truncated Morse potential quenched into the two-phase region. The cluster size and shape were used to study the domain growth and structure. The power-law growth of the characteristic length scale, which was...

Using extensive simulations of surface growth in the 2+1 dimensional atomistic model of Edwards and Wilkinson (EW), we have calculated both interfacial width and the structure factor, to extract the dynamic exponent z. In contrast to theoretical expectations, finite-size scaling of the data for...

We study the time-dependent structure factor of the one-dimensional Glauber model upon instantaneous cooling. Results obtained earlier by Reiss, Mazenko and Widom, and Bray, are linked together. Next, finite-size scaling in the limit of zero temperature, long times, small wave vectors, and large...

A special Heisenberg model is considered for which the exchange integral takes on the same value J not only for geometrically equivalent neighbours, but also for such j-neighbours which constitute an orbit of a “hidden” symmetry group of scaling transformations. The dispersion law for...