(1) Institute of Physics, Czechosl. Acad. Sci., Prague
Abstract:
The changes in domain structure as a function of the thickness of the crystal are studied on artificial magnetoplumbite crystals. The thickness dependence of the width of the domains is also studied; up to thicknesses of about 10 it follows the theoretical halfpower law. Above 10 the exponent is 0·633. The energy density of the Bloch walls=4·82 erg cm–2 and the exchange constantA=0·66×10–6 erg cm–1 are calculated on the basis of the above measurements.