论文标题
CAMNO3修饰的NBT无铅陶瓷中的室温磁电磁耦合
Room Temperature Magneto-dielectric coupling in the CaMnO3 modified NBT lead-free ceramics
论文作者
论文摘要
制备的（1-X）Na0.5bi0.5tio3-（x）CAMNO3（x = 0，0.03，0.06，0.12）组成显示X = 0.06的rhombohedral（r3c）相，而混合的rhombohedral（R3C）和Orthorhorhorhombombic（R3C）和Orthorhorhorhombombic（R3C）和Orthorhorhorhombombic（pnma）spase as x = 0.12 = 0.12 = 0.12。晶格量随着CAMNO3含量的增加而始终减少。相变温度（TC）随CAMNO3组成的增加而降低。室温介电常数增加，X = 0.03组成的损失减少，原因是氧气空位的降低和Valence State研究（XPS）证实的BI损失。所有组合物均显示出磁场的应用室温介电特性的变化，从而确认了磁性耦合。 x = 0.06的组合物显示在5 kg的施加场时，在100kHz时显示了3.69的最高负极磁电势（MD％）。
The sol-gel prepared (1-x) Na0.5Bi0.5TiO3- (x) CaMnO3 (x=0, 0.03, 0.06, 0.12) compositions show a Rhombohedral (R3c) phase for x=0.06 while a mixed Rhombohedral (R3c) and orthorhombic (Pnma) phases for the x=0.12. The lattice volume consistently decreased with an increase in the CaMnO3 content. The phase transition temperature (Tc) decreased with an increase in the CaMnO3 compositions. The room temperature dielectric constant increased, and loss decreased for the x=0.03 composition due to a decrease in the oxygen vacancy and Bi loss confirmed by the valence state study (XPS). All the compositions show a variation of the room temperature dielectric property with an application of magnetic field confirming a magnetodielectric coupling. The x=0.06 composition shows the highest negative magnetodielectric constant (MD%) of 3.69 at 100kHz at an applied field of 5 kG.
