Octacalcium phosphate (OCP) is widely used in biomaterial fabrication by virtue of its unique crystal structure and low environmental loading. Although various ion molecule substitution methods into the OCP unit lattice have been introduced, it remains unclear which factors mechanisms dominate process. Experimental studies indicated that Na alkali metal ions are substituted at P3 PO4 conjugated...

Topological insulators with broken time-reversal symmetry and the Fermi level within magnetic gap at Dirac cone provides exotic topological magneto-electronic phenomena. Here, we introduce an improved magnetically doped insulator, Fe-doped BiSbTe2Se (Fe-BSTS) bulk single crystal, ideal level. Scanning tunneling microscopy spectroscopy (STM/STS) measurements revealed that surface state possesses...