  We present a theoretical investigation of magnetostatic interaction effects
in geometrically frustrated arrays of anisotropic multilayer ferromagnetic
nanoparticles arranged in different spatially configured systems with
triangular symmetry. We show that the interlayer magnetostatic interaction
significantly expands the opportunities to create magnetically frustrated
systems. The effects of the magnetostatic interaction in magnetization reversal
processes and the possibility to control the ferromagnetic resonance spectrum
in such systems are discussed.
