I. Sosnowska et al., NEUTRON-DIFFRACTION STUDIES OF THE FE3-MOMENTS ARRANGEMENTS IN THE SPIN-GLASS SYSTEMS BATI2FE4O11 AND BASN2FE4O11( MAGNETIC), Physica. B, Condensed matter, 234, 1997, pp. 934-936
We observe magnetic contributions in the neutron diffraction patterns
of BaSn2Fe4O11 at 10 K and of BaTi2Fe4O11 at 240, 165 and 10 K. In the
former, we see evidence for a short-range Fe3+ antiferromagnetic orde
ring, while in the latter we observe contributions due to both long- a
nd short-range magnetic orderings which may confirm the re-entrant spi
n-glass behavior of BaTi2Fe4O11. Possible Fe3+ magnetic moment orderin
gs are discussed.