2269.     MICHEL, A.  Magnetic Properties of Some Solid Solutions.]  Ann. chim., vol. 8, 1937, pp. 317-423; Chem. Abs., vol. 32, 1938, p. 1989.

        First part of this monograph gives the results obtained by thermomagnetic studies on a-Fe2O3, Fe2O3·BaO, Fe2O3·SrO, Fe2O3·PbO, the cubic sesquioxide of Fe, and the ferrites of Ni, Mg, and Cu.  The effects of method of crystallization and grain size are discussed.  In Part II the results are given for solid solutions of a-Fe2O3 in F3O4, Fe3O4 in a-Fe2O3, mixtures of rhombic sesquioxide with cubic sesquioxide, solid solutions of magnetite and the ferrites of Ba, Sr, and Ca, the unstable ferrites of Be, and the ferrites of Ag, Hg, and Li.  Part III gives the results of a similar study of pyrrhotite, and solid solutions of FeS with S, Si, As, Te, Ti, W, Co, Ni, Cu, Zn, Sb, Mn, Ag, Fe, Cd, Pb, and Bi.  The general significance of the results and the interpretation of the anomalies in the temperature-magnetization curves are discussed.  Extensive bibliography appended to each part.