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Magnetization and Curie Temperature of Ilmenite–Hematite Ceramics
Author(s) -
Navarrete Liliana,
Dou Jian,
Allen Drew M.,
Schad Rainer,
Padmini Periaswamy,
Kale Pranoti,
Pandey R.K.
Publication year - 2006
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2006.00953.x
Subject(s) - ilmenite , hematite , curie temperature , materials science , magnetization , ceramic , condensed matter physics , curie , magnetic semiconductor , mineralogy , semiconductor , ferromagnetism , metallurgy , chemistry , magnetic field , physics , optoelectronics , quantum mechanics
The morphology, structure, and magnetic properties of the magnetic semiconductor ceramic Ilmenite–Hematite (IH), (1− x )FeTiO 3 – x Fe 2 O 3 , were studied as a function of the composition x . The magnetic ordering temperatures that we observed were consistently higher than those reported previously and were, for most of the composition range, above room temperature. We rule out the formation of Fe clusters as the origin of the magnetic properties. These magnetic properties of IH ceramics, in combination with their semiconducting characteristics, render them promising for spin‐electronic applications.