Fig. 3

(a) HAADF-STEM micrograph of the sample labeled Ap-Mg showing nanorods and hexagonal prisms. (b–d) EDX element mappings of Ca, Mg, and P. (e–h) TEM images and SAED patterns of nanorods and prisms.

(a) HAADF-STEM micrograph of the sample labeled Ap-Mg showing nanorods and hexagonal prisms. (b–d) EDX element mappings of Ca, Mg, and P. (e–h) TEM images and SAED patterns of nanorods and prisms.