论文标题
金属Perovskites gdrh $ _3 $ c $ _ {1-x} $ b $ _x $的不稳定性和磁基状态的演变
Instability and evolution of the magnetic ground state in metallic perovskites GdRh$_3$C$_{1-x}$B$_x$
论文作者
论文摘要
我们报告了金属钙钛矿GDRH $ _3 $ c $ _ {1-x} $ b $ _x $（$ 0.00 \ le x \ le x \ le 1.00 $）的五个组成的结构，磁，电气传输和热性能的调查。我们的结果表明，所有这五个组合物在低温下都经过磁性秩序，但是在碳和富含硼的组合物中，有序状态的性质有显着差异，其中前者显示了振幅调节的磁性结构的特征，后者表现出相等的抗强度抗抗激素的证据。我们还观察到在构图无序化合物中传导载体极化的明显磁场依赖性演变。结果表明，该系统在磁不稳定性的距离上位于磁不稳定性的附近，其中控制参数中的较小变化（例如晶格常数和/或电子密度）导致基态不同。
We report investigations of the structural, magnetic, electrical transport and thermal properties of five compositions of the metallic perovskite GdRh$_3$C$_{1-x}$B$_x$ ($0.00 \le x \le 1.00$). Our results show that all the five compositions undergo magnetic ordering at low temperatures, but the nature of the ordered state is significantly different in the carbon- and the boron-rich compositions, where the former shows signatures of an amplitude-modulated magnetic structure and the latter exhibits evidences of an equal-moment incommensurate antiferromagnetic ordering. We also observe a remarkable field-dependent evolution of conduction carrier polarization in the compositionally disordered compounds. The outcomes indicate that this system is energetically situated in proximity to a magnetic instability where small variations in the control parameter(s), such as lattice constant and/or electron density, lead to considerably different ground states.
