AmFe $J = 0$基态镅的磁极化
Magnetic polarization of the americium $J = 0$ ground state in AmFe$_{2}$
摘要：
三价镅的基态是非磁性的（$J$ = 0），这是由于轨道和自旋力矩的抵消而产生的。然而，如果Am $^{3+}$嵌入铁磁基质中，则可以通过大的分子场诱导磁性。利用X射线磁圆二色性技术，我们表明，这是在AmFe $_2$的情况下。由于$\langle J_z \rangle$ = 0，自旋分量正好是轨道分量的两倍，总的Am矩与Fe的相反，磁偶极子算符$\langle T_{z} \rangle$可以直接确定;我们讨论了后者在锕系元素中的进展。
英文摘要：
Trivalent americium has a non-magnetic ($J$ = 0) ground state arising from the cancelation of the orbital and spin moments. However, magnetism can be induced by a large molecular field if Am$^{3+}$ is embedded in a ferromagnetic matrix. Using the technique of x-ray magnetic circular dichroism, we show that this is the case in AmFe$_2$. Since $\langle J_z \rangle$ = 0, the spin component is exactly twice as large as the orbital one, the total Am moment is opposite to that of Fe, and the magnetic dipole operator $\langle T_{z} \rangle$ can be determined directly; we discuss the progression of the latter across the actinide series.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
