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Updated: Mar 11, 2026
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Published on: May 11, 2019
Magnesium dititanate (MgTi2O5) with pseudobrookite structure: a review
Yoshikazu Suzuki1, Yutaka Shinoda2
1Institute of Advanced Energy, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan; Graduate School of Pure and Applied Sciences, University of Tsukuba, Ibaraki, 305-8573, Japan.
Abstract:
Magnesium dititanate (MgTi2O5, MT2) has been synthesized since the early 1930s. It has the pseudobrookite structure (general formula Me3O5), corresponding to the Mg-enriched artificial endmember of the Fe2TiO5 (pseudobrookite)-FeTi2O5 (ferropseudobrookite)-Mg0.5Fe0.5Ti2O5 (armalcolite) solid solution. Since MgTi2O5 has relativity high thermal stability among pseudobrookite-type phases, it is expected to be a well-balanced low-thermal-expansion material. Here we review both the historical and recent studies on MgTi2O5, particularly on its crystal structure, cation order-disorder, physical properties and synthesis methods.
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