Vi. Sokolenko et al., ANOMALOUS DECREASE OF CRITICAL-CURRENT IN SUPERCONDUCTORS WITH DEFORMATION TWINS, Czechoslovak journal of Physics, 46, 1996, pp. 879-880
The influence of twins induced by twist deformation at 4.2 K and rolli
ng deformation at 20 K upon magnetic field dependences of critical cur
rent density J(C) of niobium and vanadium is studied. The ''anomalous'
' decrease of J(C) in zero and low magnetic fields is stipulated by an
increasing thermomagnetic instability at twin interfaces with high lo
cal values of T-C.