1. Professor Emeritus, Saga Univ., Saga 840-8502, Japan (corresponding author). ORCID: .
2. XRD Specialist, Engineering Section, Okinawa Institute of Science and Technology Graduate Univ., 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan.
3. Research Support Technician, Imaging Section, Okinawa Institute of Science and Technology Graduate Univ., 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan.
4. Imaging Specialist, Imaging Section, Okinawa Institute of Science and Technology Graduate Univ., 1919-1 Tancha, Onna-son, Okinawa 904-0495, Japan.