1. Akaogi M, Kusaba K, Susaki J, Yagi T, Matsui M, Kikegawa T, Yusa H, Ito E (1992) High-pressure high-temperature stability of αPbO2-type TiO2 and MgSiO3 majorite: calorimetric and in situ X-ray diffraction studies. In: Syono Y, Manghnani MH (eds) High-pressure research: application to earth and planetary sciences. Am Geophys Union Geophys Monogr 67:447–455
2. Azough F, Freer R, Wang CL, Lorimer GW (1996) The relationship between the microstructure and microwave dielectric properties of zirconium titanate ceramics. J Mater Sci 31:2539–2549
3. Block S, da Jornada JAH, Piermarini GJ (1985) Pressure-temperature phase diagram of zirconia. J Am Ceram Soc 68:497–499
4. Dubrovinskaia NA, Dubrovinsky LS, Ahuja R, Prakapenka VB, Dmitriev V, Weber HP, Osorio-Guillen JM, Johansson B (2001) Experimental and theoretical identification of a new high-pressure TiO2 polymorph. Phys Rev Lett 87(275501):1–4
5. Dubrovinsky LS, Dubrovinskaia NA, Swamy V, Muscat J, Harrison NM, Ahuja R, Holm B, Johansson B (2001) The hardest known oxide. Nature 410:653–654