| http://www.w3.org/ns/prov#value | - Among these ferroelectric and highly dielectric materials, titanium oxide and composite oxides containing titanium oxide (titanates) are preferred, and titanate perovskite type compounds having a dielectric constant of about 100 to 300 at room temperature in bulk polycrystalline form, for example, such as BaTiO3, SrTiO3, CaTiO3 and PbTiO3 are especially preferred.
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