论文标题
通过外部参数调整M型Hexaferrite Bafe12O19
Tuning of Quantum Paraelectricity of M-type Hexaferrite BaFe12O19 by External Parameters
论文作者
论文摘要
据报道，M型Hexaferrite BAFE12O19是一种新型的量子 - 副细胞，它通过显示由于量子波动而导致的低温介电平原，这是一种带有三角形晶格的量子。还建议它具有可能的量子 - 偶极液态基态。为了抑制其量子波动并达到可能的量子临界点，我们以三种方式调整了其量子路线电脑：（i）57FE同位素更换； （ii）平面压缩应变； （iii）静静压。发现95％的57FE替换和平面应变更有效地通过在介电常数的温度依赖性中诱导峰值特征来使其接近临界区域更接近关键区域。相反，静水压力的应用通过逐渐抑制介电常数的高原特征将系统从量子临界点推开。我们的综合努力揭示了M型六角素对研究量子关键行为的潜力。
M-type hexaferrite BaFe12O19 was recently reported to be a new type of quantum paraelectrics with triangular lattice by showing a low temperature dielectric plateau due to quantum fluctuation. It has also been proposed to have a possible quantum-dipole liquid ground state. To suppress its quantum fluctuations and reach a possible quantum critical point, we have tuned its quantum paraelectricity in three ways: (i) 57Fe isotope replacement; (ii) in-plane compressive strain; and (iii) hydrostatic pressure. It is found that 95% 57Fe replacement and the in-plane strain are more effective to drive its ground state closer to a critical region by inducing a peak feature in the temperature dependence of dielectric constant. In contrast, the application of hydrostatic pressure pushed the system away from the quantum critical point by gradually suppressing the plateau feature in dielectric constant. Our combined efforts reveal the potential of the M-type hexaferrites for studying the quantum critical behaviors.
