论文标题
结构，磁性和介电性能在纳米 - 晶状体yb $ _2 $ comno $ _6 $
Structure, magnetic and dielectric properties in nano-crystalline Yb$_2$CoMnO$_6$
论文作者
论文摘要
已经研究了YB $ _2 $ comno $ _6 $的结构，磁性和介电特性。 yb $ _2 $ comno $ _6 $由Sol-Gel方法和结构分析合成的Yb $ _2 $ comno $ _6 $的纳米晶体样品表明，样品在单斜晶体结构中结晶，具有\ textit {p2 $ _1 $/n}相组。为了了解CO，MN和YB的电荷状态，我们进行了XPS研究。磁研究表明，该样品在$ t_c $ $ \ sim $ 56 K附近经历顺磁到铁磁相变，并且由于YB $^{3+} $磁性离子的订购，在较低温度下进行了额外的磁订单。依赖温度的拉曼研究表明，这种材料中存在自旋 - 音波相互作用。此外，我们研究了该材料的介电特性。我们观察到材料显示出遵守热激活的松弛机制的松弛行为。阻抗光谱表明，该材料表明了非狂热的行为。进行交流电导率研究以了解涉及量子力学隧穿现象的传导力学。
Structural, magnetic and dielectric properties have been studied for Yb$_2$CoMnO$_6$. Nano-crystalline sample of Yb$_2$CoMnO$_6$ synthesized by sol-gel method and structural analysis shows that the sample crystallizes in monoclinic crystal structure with \textit{P2$_1$/n} phase group. To understand the charge state of Co, Mn and Yb we have performed the XPS study. Magnetic study shows that the sample undergoes a paramagnetic to ferromagnetic phase transition around $T_c$ $\sim$56 K and an additional magnetic ordering at a lower temperature around 14 K due to ordering of Yb$^{3+}$ magnetic ions. Temperature dependent Raman study reveals that spin-phonon interaction is present in this material. Further, we have studied the dielectric properties of this material. We observed that the material shows a relaxation behavior that obeys the thermally activated relaxation mechanism. Impedance spectroscopy reveals that the material shows non-Debye's behavior. AC conductivity study is performed to understand the conduction mechanics which involve the quantum mechanical tunneling phenomenon.
