Electric charge is not the only possible property for the interaction of atoms or materials withrnother elementary excitations. The spin is a fundamental quantum mechanical property inherentrnto elementary particles. Atoms are composed of positively charged core and extended cloudrnof electrons prone to induce polarizations which in turn complement interactions with externalrnfields. Multiferroic Magnetoelectrics find new applications in magnetic as well as electricrndevices. The coupling of magnetic and electric degrees of freedom offers additional functionalitiesrnarising from the quantum mechanical interactions of the charges,spins and lattice vibrations.rnThe interactions of magnetic and lattice phenomena are treated to formulate the model Hamiltonianrnand analyzed through the double time Green function. The spectrum of excitation isrnfound to depend on the excitation wave vector and the spectral broadening explains the interactionrnthat exists between the two domains. The density fluctuations of electromagnetic domainsrnand the lattice vibration modes can be due to the the exchange interaction and consequently,rnexplained by the damping Green function. In particular case, the interaction phenomena ofrnphonons and magnones have been studied in ferroelectric-ferromagnetic multiferroics makingrnuse of the equation of motion method to understand the magnetizations and polarizations whichrnindicate the cross coupling of magnetic and electric properties(existence of multiple ferroicrnorders) opening a new route towards alternating switching for practical applications,and appreciablernresults are obtained in broad agreement with experimental findings