Y. Nakamura et al., STRUCTURE AND MAGNETIC-PROPERTIES OF QUENCHED (MNXAL1-X)(3)O-4 SPINELS AND HAUSMANNITES, IEEE transactions on magnetics, 31(6), 1995, pp. 4154-4156
Manganese aluminate spinels and Hausmannites, namely (MnxAl1-x)(3)O-4,
with compositions varying between x = 0.33 and x = 1.00 have been syn
thesized by sintering of MnO and Al2O3 mixtures. Lattice parameters of
these spinels and Hausmannites Increase linearly with increasing Mn c
ontent and depend on neither sintering temperature nor cooling rate, M
agnetic hysteresis loops at 5 K show non-saturating features up to 5 T
. Ferrimagnetic Curie temperatures of spinels and Hausmannites both in
crease monotonically with increasing Mn content.