论文标题
d5偏心诱导的诱导三鲁尼特 - fe2Teo6中的铁电和磁电相关性
d5-off-centering induced ferroelectric and magnetoelectric correlations in trirutile-Fe2TeO6
论文作者
论文摘要
我们列出了D5偏心，弱铁电化极少量的存在，并证明了其与观察到的磁电（ME）特性在G类型（TN〜210 K）抗Fireromagnet Fe2Teo6（FTO）化合物中的相关性。铁电性（FE）的起源与离子核周围的晶格和不对称电子密度分布有关。 ME耦合在磁场依赖性极化，ME电压和磁体元测量中观察到。提议通过双氧桥接Fe-O1-FE途径通过内部二聚体二聚体交换耦合引起的短程磁顺序，提议发挥主导作用，以表现出300 K的负面非线性磁场的行为。观察到的非线性ME耦合表示在温度和磁场依赖性应变测量中表现出的磁弹性。因此，在FTO中呈现了D5离子的罕见铁电和磁电耦合的存在。
We present the rare existence of d5 off-centering, weak ferroelectric polarization and demonstrate its correlation with observed magnetoelectric (ME) properties in the G type (TN~210 K) antiferromagnet Fe2TeO6 (FTO) compound. The origin of ferroelectricity (FE) is associated with both lattice and asymmetric electron density distribution around the ion cores. ME coupling is observed in magnetic field-dependent polarization, ME voltage, and magnetostrain measurements. Short-range magnetic ordering due to intrabilayer dimeric exchange coupling via the double oxygen bridged Fe-O1-Fe pathway is proposed to play a dominating role to exhibit the negative nonlinear magnetic field dependent ME behavior at 300 K. Interbilayer exchange via Fe-O2-Fe pathways dominantly determines the hysteretic nonlinear magnetic field dependent ME response below TN. The observed nonlinear ME coupling signifies magnetoelasticity as manifested in the temperature and magnetic field-dependent strain measurement. Hence the rare existence of ferroelectricity and magnetoelectric coupling by d5 ion is presented in FTO.
