Fast Neutron Irradiated Magnetite and Haematite Investigated by Neutron Diffraction
نویسندگان
چکیده
In this paper, we present new experimental results about crystallographic and magnetic properties obtained on magnetite Fe,04 and haematite a-FqO, samples irradiated by fast neutrons. Polycrystalline rods were irradiated at 350K by fast neutrons inside the core of Melusine nuclear reactor (CENG) in Grenoble at various fluences (4 lO", 9.2 1019 and 20 10'' neutronslcm~). The irradiated samples have been studied by the neutron diffraction technique. Contrary to the case of garnets ferrites, where amorphization is observed at such fluences, no similar effect is observed in magnetite : one just observes a very weak swelling. Results about haematite are also discussed.
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