Abstract
Cr doped BaTiO3 has been synthesised with sol–gel technique. Its transformation point of ferroelectric to paraelectric and the latent heat of the transformation were observed respectively. They are a little less than those for pure BaTiO3. Bonded layered composites Tb1−xDyxFe2−y–BaTi0·99Cr0·01O3 have been fabricated. Their magnetoelectric (ME) effects have been investigated. The transverse ME voltage coefficients for the bilayer Tb1−xDyxFe2−y–BaTi0·99Cr0·01O3 and the trilayer Tb1−xDyxFe2−y–BaTi0·99Cr0·01O3–Tb1−xDyxFe2−y can reach 732·5 and 2753 mV Oe−1 cm−1 respectively, under a bias magnetic field 355 Oe at room temperature. These are about 54 and 56% larger than those for the bilayer and trilayer composed by pure BaTiO3 respectively. This suggests that the doped BaTiO3 can be a new choice of piezoelectrics to compose ME composites.
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