L MOCHIDA et al Void oop type Loop type Bent Linear typ Bent s Domain ur Fig 3 TEM RF images of the transverse sections in F-c (a) Total transverse image of F-c(in the rectangular).(h) Enlarged area the domains had loop shapes, distributing with- those found in the core area. In the outer area, the ut any radial alignment as observed in the F-A. The constituent domains showed the bent shapes in a thickness and length of a domain were below and overall radial orientation There was no linear shaped above 100 nm, respectively. a domain consisted of domain in the outer area. The length of the domains micro-domains of 10 nm thick and 10-100 nm long. was found to be above 300 nm, while the thickness In the middle area, dominant loop and minor multi- was 100 nm, similar to that observed in the other areas fold bent shapes were observed 3.1.3 Fiber with typical random transverse The length and thickness of domains and micro- texture Figure 1(c) showed OM, SEM and domains in the middle area were much the same to HR- SEM photographs of transverse sections in the948 I. MOCHIDA et al. Fig. 3. TEM BF images of the transverse sections in F-C. (a) Total transverse image of F-C (in the rectangular). (b) Enlarged image of picture (a). area the domains had loop shapes, distributing with￾out any radial alignment as observed in the F-A. The thickness and length of a domain were below and above 100 nm, respectively. A domain consisted of micro-domains of 10 nm thick and lo-100 nm long. In the middle area, dominant loop and minor multi￾fold bent shapes were observed. The length and thickness of domains and micro￾domains in the middle area were much the same to those found in the core area. In the outer area, the constituent domains showed the bent shapes in a overall radial orientation. There was no linear shaped domain in the outer area. The length of the domains was found to be above 300 nm, while the thickness was 100 nm, similar to that observed in the other areas. 3.1.3 Fiber with typical random transverse texture Figure l(c) showed OM, SEM and HR-SEM photographs of transverse sections in the