Figure 5

TEM a BFI, b SAED pattern in [011] zone axis, c DFI using diffraction and d EDX spectrum of an elongate aragonite particle with negligible impurities extending along [100] direction and with well-developed () surface. The additional 1/3 () diffraction (denoted as S) implies a 3x superstructure (cf. text). The scale sample was taken from the steel pipe subjected to MWT under 400 G at pipe center, 0.1 s/cycle, and with an electric ground to the Earth