THE FLUX PINNING MECHANISM OF A-15 SC MATERIALS AT HIGH FIELD
A-15超导材料的高场钉扎机制

Having considered the anisotropic property of the interaction between grain-boundaries and flux line lattice, we point out that the shearing flow of FLL along grain-boundaries is accompained by the depinning of FLS from weak pinning centers on GB, and this may be responsible for the "tail" of Fp at the vicinity of Hc2.