Open AccessMagnetoelectric cuopling in laminate composites Tb1－xDyxFe2－y and Fe-doped BaTiO3
Author(s) -
Fan Jun-Feng,
Ning Zhang
Publication year - 2007
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.56.6056
Subject(s) - materials science , tetragonal crystal system , composite material , doping , bilayer , dielectric , ferroelectricity , condensed matter physics , crystal structure , crystallography , chemistry , physics , membrane , biology , genetics , optoelectronics
Fe-doped BaTiO3 has been synthesized with sol-gel technique. The doped perovskite was found to have tetragonal structure. The transformation point of ferroelectric to paraelectric and the latent heat of the transformation were observed to be a little less than those for pure BaTiO3. Layered composites Tb1-xDyxFe2-y/Fe∶BaTiO3 have been fabricated. Their mgnetoelectric (ME) effect has been investigated. The transverse ME voltage coefficient for the bilayer Tb1-xDyxFe2-y-Fe∶BaTiO3 and the trilayer Tb1-xDyxFe2-y-Fe∶BaTiO3-Tb1-xDyxFe2-y can reach 6.225 adn 26.25mV·(A·m-1)-1·cm-1respectivelyunder a bias magnetic field of 2.8×104A/m at room temperaturewhich are about 50% larger than those for the bilayer and trilayer composed of pure BaTiO3.