R2: Crystal structure, crystal chemistry, physical properties of minerals, crystal growth and applied mineralogy

[R2-07] Fundametal study of charge transfer and magnetic structure transfer of Mn_3-xFe_xO4 as a function of pressure.

*Takamitsu Yamanaka¹, Takanori Hattori², Kazuki Komatsu³, Yuki Nakamoto⁴, Saqib Rahman¹, Lin Wang¹, Ho-kwang Mao¹, Naohisa Hirao⁵ (1. HPSTAR, 2. Japan Photon Accelerator Complex Material and Life Experimental Facility (MLF), 3. Geochemical Research Center University of Tokyo, 4. KYOKUGEN Center for Science and Technology under extreme Condition, 5. R IKEN JASRI SPring-8)

Keywords:Mn3-xFexO4 solid solution, High-pressure study, Charge transfer, Magnetic structure transition, Neutron diffraction study

Phase studies of iron bearing oxide spinels and post-spinels are essential and indispensable investigations for geosciences and fundamental ferrite substances. We executed neutron diffraction and electric resistivity measurements under high pressure to understand the site occupancy determined by X-ray Mössbau study. Hypothetical total magnetic moment can be evaluated the magnetic moments of cations in (X_1-xY_x) [X_xY_2-x]O₄given by Bohr magnetic quantum number: Study of charge transfer and magnetic structure change under pressure is one of the significant subjects.