1967 年 36 巻 10 号 p. 809-810
The FIM image of ‹001› oriented tungsten was observed at liquid nitrogen temperature. The tip was made from one of the samples which were cut out at an angle 45° to the rolling direction of tungsten sheet. The ‹001› orientation was infered from the following observations: (1) (001) face ap-peared in the image-center, (2) two [001] zone lines crossed at nearly right angles to each other in the image-center, (3) these zone lines were nearly linear, (4) the similar patterns were observed through the sequent removing of several tens of lattice layers by the field evaporation.