1 at.% Ti-doping on the B-site combined with a modified rapid liquid-phase sintering technique was conducted to improve the ferroelectric properties in Bi0.86Sm0.14FeO3 multiferroic ceramics. A tenfold increase of the remnant polarization was achieved in the present ceramics compared with the samples without Ti-doing and prepared by conventional solid state sintering, but the dielectric results and conductivities refuted the generally considered mechanism of suppression of leakage current or dielectric loss. Further investigation preferred an explanation of softening effects, which could be induced by donor doping and random orientation of defect dipoles during quenching process of the rapid liquid-phase sintering, and the ferroelectric data of the second heat-treated and polarized samples well supported such explanation. (C) 2014 AIP Publishing LLC.
机构:
Xi An Jiao Tong Univ, Minist Educ, Key Lab, Elect Mat Res Lab, Xian 710049, Peoples R China
Xi An Jiao Tong Univ, Int Ctr Dielect Res, Xian 710049, Peoples R ChinaXi An Jiao Tong Univ, Minist Educ, Key Lab, Elect Mat Res Lab, Xian 710049, Peoples R China
Jin, Li
;
Li, Fei
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机构:
Xi An Jiao Tong Univ, Minist Educ, Key Lab, Elect Mat Res Lab, Xian 710049, Peoples R China
Xi An Jiao Tong Univ, Int Ctr Dielect Res, Xian 710049, Peoples R ChinaXi An Jiao Tong Univ, Minist Educ, Key Lab, Elect Mat Res Lab, Xian 710049, Peoples R China
Li, Fei
;
Zhang, Shujun
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Penn State Univ, Mat Res Inst, University Pk, PA 16802 USAXi An Jiao Tong Univ, Minist Educ, Key Lab, Elect Mat Res Lab, Xian 710049, Peoples R China
机构:
Xi An Jiao Tong Univ, Minist Educ, Key Lab, Elect Mat Res Lab, Xian 710049, Peoples R China
Xi An Jiao Tong Univ, Int Ctr Dielect Res, Xian 710049, Peoples R ChinaXi An Jiao Tong Univ, Minist Educ, Key Lab, Elect Mat Res Lab, Xian 710049, Peoples R China
Jin, Li
;
Li, Fei
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h-index: 0
机构:
Xi An Jiao Tong Univ, Minist Educ, Key Lab, Elect Mat Res Lab, Xian 710049, Peoples R China
Xi An Jiao Tong Univ, Int Ctr Dielect Res, Xian 710049, Peoples R ChinaXi An Jiao Tong Univ, Minist Educ, Key Lab, Elect Mat Res Lab, Xian 710049, Peoples R China
Li, Fei
;
Zhang, Shujun
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h-index: 0
机构:
Penn State Univ, Mat Res Inst, University Pk, PA 16802 USAXi An Jiao Tong Univ, Minist Educ, Key Lab, Elect Mat Res Lab, Xian 710049, Peoples R China