Date of this Version
PHYSICAL REVIEW B 72, 174410 (2005)
Magnetic properties of free BiNMnM clusters (N=2–20, M=0–7) are determined from Stern-Gerlach deflections at low temperature (46.5 K). Pure bismuth clusters with odd number of atoms exhibit paramagnetic deflections. The addition of manganese atoms produces a ferromagnetic response which is strongly size dependent. Certain combinations have very large magnetic moments such as Bi5Mn3, Bi9 Mn4, Bi10Mn5, and Bi12Mn6.