Structural and magnetic characterization in 6H-BaFeO3
The 6H-BaFeO3-x system is known by their structural complexity. In fact, little variations on the oxygen content leads to slight but significant structural modification of the 6H-type structure. For that, we consider very interesting to study a sample with all Fe in the IV oxidation state. In this sense, we have prepared 6H-BaFeO3 (x=0). The magnetic measurements show a complex and rich magnetic behavior for 6H-BaFeO3 sample and a disproportionation of FeIV in FeIII and FeV. Taking into account that the synthesized BaFeO3 material is the most oxidized sample up to now reported, the aim of this work is to get more information about their structural and magnetic behavior at room and low temperatures. These results allow us to stablish the structural effects originated by the Fe(IV) disproportionation at low temperature. For this proposal, to follow the thermal evolution of the structural and magnetic phase we need collect diffraction data at D20 high flux powder diffractometer and in D2B at 2, 130, 215 and 300 K.
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HERNANDO GONZALEZ Maria; FERNANDEZ DIAZ Maria Teresa; GONZALEZ CALBET Jose Maria; GUTIERREZ Daniel; MARTINEZ PENA Jose Luis; PARRAS Marina and VARELA Aurea. (2019). Structural and magnetic characterization in 6H-BaFeO3. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2682
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