Mössbauer Effect Study of Calcium Magnetites
Α.Z. HrynkiewiczInstitute of Nuclear Physics, CracowD. S. KulgawczukInstitute of Nuclear Physics, CracowE MazanekInstitute of Iron Metallurgy, Academy of Mining and Metallurgy, CracowA. J. PustówkaInstitute of Physics, Jagiellonian University, CracowJ. SawickiInstitute of Physics, Jagiellonian University, CracowMarta WyderkoInstitute of Iron Metallurgy, Academy of Mining and Metallurgy, Cracow
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Аннотация
Abstract Mössbauer effect measurements for a series of iron compounds of the type Ca x Fe 3−x O 4 (0 ≦ x ≦ 0.55), known as calcium‐magnetites, are performed at room temperature and liquid nitrogen temperature. A single calcium‐magnetite phase giving Mössbauer spectra with magnetite‐like Zeeman splitting was observed up to x ≈ 0.28. For higher Ca concentrations a second phase, represented by the additional quadrupole doublet, was detected. This new phase may be identified as CaFe 2 O 4 ferrite.
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