Magnetic Properties of Ilmenite-Hematite System at Low Temperature

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概要

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• The magnetic properties of FeTiO_8 containing less than 50 mole percent of Fe_2O_3 have been re-examined between 2°K and room temperature by means of a Ciofli-type automatic fluxmeter. It was confirmed that each specimen has a low-temperature transition point, which decreases in temperature with increasing content of Fe_2O_3. Above the transition temperature the specimens with 8 and 12 mole % Fe_2O_3 show superparamagnetic behavior. By analysis of the superparamagnetic magnetization curves, the sizes of the superparamagnetic clusters were determined. The average size of clusters in these crystals is found to be explained by a simple assumption that one Fe^<3+> ion which eaters into the Ti layers of ilmenite alignes the spins of 9 nearest neighbour Fe ions parallel by a superexchange interaction. The complete phase diagram of the ilmenite rich side of the solid solution, as revised by the present study, is presented.

• 社団法人日本物理学会の論文
• 1962-12-05

著者

• Ishikawa Yoshikazu

  The Institute Few Solid State Physics University Of Tokyo

• Ishikawa Y.

  The Institute few Solid State Physics, University of Tokyo

関連論文

• Motion of a Single Domain Wall in a Parasitic Ferromagnet YFeO_3
• Magnetic Properties of Ilmenite-Hematite System at Low Temperature
• Superparamagnetism in the ZnFe_2O_4-NiFe_2O_4 System
• Antiferromagnetism of γ Fe-Mn Alloys

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