Study of room temperature magnetoelectric coupling in Ti substituted bismuth ferrite system
Study of room temperature magnetoelectric coupling in Ti substituted bismuth ferrite system
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DOI：
10.1063/1.2349491
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发表时间：
2006-10
影响因子：
3.2
通讯作者：
M. Kumar;K. Yadav
中科院分区：
文献类型：
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作者：
M. Kumar;K. Yadav
据报道，Ti取代的二型二元和磁性特性由固态反应替换为固态反应的陶瓷。损失切线。在饮食常数中分别是2.571kv ∕ cm和0.658μc∕ cm2。 25O3化合物代表部分逆转。在铁电磁滞回路上的磁极和外部磁场的变化。
Dielectric, magnetic, and magnetoelectric properties of Ti substituted bismuth ferrite (BiFeO3) ceramic synthesized by solid state reaction are reported. Ti substitution for Fe in BiFeO3 increased the room temperature electrical resistivity by approximately six orders of magnitude and also increased the dielectric constant and reduced the loss tangent. The remanent polarization, coercive field, and maximum polarization were 0.081μC∕cm2, 2.571kV∕cm, and 0.658μC∕cm2, respectively at 20kV∕cm. An anomaly in the dielectric constant and loss tangent around Neel temperature was observed. The ferroelectric and magnetic hysteresis loops were measured which are not really saturated in BiFe0.75Ti0.25O3 compound and represented a partial reversal. The magnetoelectric coupling between electric dipoles and magnetic dipoles at room temperature was demonstrated by measuring the effect of magnetic poling on ferroelectric hysteresis loop and the change in the dielectric constant with the external magnetic field.