Process for producing apatite crystals and apatite crystals

摘要

A method for producing an apatite crystal includes the steps of preparing (S10) an apatite single crystal corresponding to the general formula M2 5 (PO 4) 3 X (wherein M 2 is at least one atomic element selected from the group consisting of alkaline earth metals and Eu, and X at least one atomic element is selected from the group consisting of halogens); placing (S12) the apatite single crystal in a space settable to a predetermined atmosphere; supplying (S14) water vapor into the room; and heating (S16) so that the atmosphere in the room is in a range of 1000 ° C to 1400 ° C.