Some Bianchi type III cosmological models with magnetic field for massive string are investigated. F12 is only the non-vanishing component of electromagnetic field tensor Fij. To get a determinate solution. we have assumed that the expansion (θ) in the model is proportional to the shear (σ). This leads to C = An where A and C are functions of time alone. A particular solution for n = 1 is discussed. The physical implications of the models, are also discussed.
Cosmic massive string; Bianchi Type III