Figure 7

Time dependence of normalised field in undoped, 5% B4C (MPIG) (top of single bulk), 10% B4C (MPIG) (centre of stack), Stack-5 (H1) at (a) 10 K and (b) 20 K, respectively.

Time dependence of normalised field in undoped, 5% B4C (MPIG) (top of single bulk), 10% B4C (MPIG) (centre of stack), Stack-5 (H1) at (a) 10 K and (b) 20 K, respectively.