A Co-based single-molecule magnet confined in a barium phosphate apatite matrix with a high energy barrier for magnetization relaxation

An apatite-type barium phosphate with a high content of cobalt ions in the trigonal channels features slow relaxation of magnetization with an energy barrier U-eff of up to 387 cm(-1), which is well above the values for all so far known d-metal based single-molecule magnets (SMMs).