We have studied multilayers with a thickness of the V layers between 1.5 and and a fixed thickness of the Heusler layer by x-ray scattering, neutron reflectivity, and magnetization measurements. In the thickness range neutron reflectivity results provide clear evidence for an antiferromagnetic (af) interlayer long-range order below a Néel temperature . The interlayer long range order does not show an oscillating character and is stabilized by a weak af coupling field . We attribute the af coupling to magnetic dipolar stray fields originating from magnetically rough surfaces of a granular microstructure. In the thickness range the multilayers undergo a cluster glass transition at . At high temperatures above or the mutilayers are superparamagnetic with a huge cluster magnetic moment .