Gold-Manganese Alloys; Some Preliminary Studies by Neutron Diffraction

Meyer and Taglang (1956) showed that the alloy Au/sub 2/Mn, which is antiferromagnetic in zero and weak magnetic fields, becomes ferromagnetic when a magnetic field above a certain threshold value is applied. The saturation magnetization corresponds to a moment of 3.49 mu b per manganese atom. Meyer (1956) has described a ferromagnetic form of MnA/sub 4/ bearing a magnetic moment of 4.15 mu b per maganese atom, suggesting that the manganese is in an ionic form. Neutron diffraction techniques were used to study the goldmanganese system. A preliminary account of the results of the study is given, (A.C.)