Relationship Between Infrared Radiation and Crystal Structure in Fe-Mn-CO-Cu-O Spinels

Abstract

Abstract: Ni3+ and Cr3+ doped Fe-Mn-Co-Cu-O spinels were prepared by solid phase sintering. The valence states and distribution of transition ions in the spinel crystals are being inferred from the consideration of thermodynamic principle and crystalline field theory. The microstructure and performance of those are studied by XRD, FT-IR and IRE-2 infrared radiant instrument. Ni3+ and Cr3+ occupy the vacancies or substitute the other ions in the spinel structure and formed diverse spinel structure, which exhibits infrared integral emissivities of 0.93 in the whole bands, and 0.94 in the bands within 14~25μm too. The content of Fe2O3 and MnO2 in the spinel crystals changes maybe induces infrared radiativity of spinels differently.

Key words: Crystal structure, Minerals, Infrared radiation properties

Y. Zhang, D.J. Wen. Relationship Between Infrared Radiation and Crystal Structure in Fe-Mn-CO-Cu-O Spinels[J]. Acta Metallurgica Sinica (English Letters), 2008, 21(1): 15-20 .

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Relationship Between Infrared Radiation and Crystal Structure in Fe-Mn-CO-Cu-O Spinels

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