Strange form factors of baryons

The strange magnetic form factor of proton is calculated upon the general chiral SU(3) group structure to confirm the recent experimental result of the SAMPLE Collaboration. We consider a set of six inertia parameters to realize the magnetic moments of the baryon octet. We show that the strange form factor of proton is a positive quantity, i.e., +0.37 n.m. Its positiveness is analyzed in terms of the vacuum fluctuation coupled to the vector current along the strangeness direction.