Growth of Crystals and Magnetic Properties of β-Mn2O3 Solid Solutions
- 1 March 1966
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 37 (3) , 1423-1424
- https://doi.org/10.1063/1.1708497
Abstract
Crystals having the β‐Mn2O3 structure have been grown electrolytically from a sodium polytungstate melt. The electrolysis was carried out at approximately 750°C in the eutectic mixture 80 mole % Na2WO4−20 mole % WO3 with the oxide crystals developing at the anode. From a melt containing manganese and aluminum oxides, crystals of the composition Mn1.8Al0.2O3 were obtained. Upon substitution of iron for aluminum, crystals of various compositions were obtained, as determined by chemical analysis. Magnetic susceptibility measurements showed θ values in the range of −140° to −180°K. A sample with manganese and aluminum was antiferromagnetic with a Néel temperature of about 70°K. The magnetic moment in the paramagnetic region was 4.80 μB, suggesting that Mn3+ was present. A sample containing iron and manganese showed spontaneous magnetization of the order of 4 emu/g below 66°K.This publication has 1 reference indexed in Scilit:
- Die Kristallstruktur des Bixbyits (Fe,Mn)2O31Zeitschrift für Kristallographie, 1956