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Stability and magnetic properties of transition metal atoms endohedral BnNn (n=12-28) cages

机译:过渡金属原子内面BnNn(n = 12-28)笼的稳定性和磁性

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First-principles calculations have been conducted to systemically investigate the stability. and magnetic properties of 3d and 4d transitional-metal (TM) atoms doped in the BnNn (n = 12, 16,20,24,28) cages. Among those cages, the B24N24 is the optimal one for encapsulating 3d and 4d TM atoms according to the computed heat of formation. Inside B24N24 cage, 3d and 4d TM dopants belonging to the same group in the Periodic Table exhibit similar magnetic behaviors. Most of the 3d and 4d TM atoms remain magnetic after doped in the B24N24 cage except for Ni, Zr, and Pd. The magnitudes of the remaining moments for 3d (except for Sc, Ti, and V) and 4d dopants are. reduced from those of free atoms. The energy gaps are localized at the doped transition metal atoms. Encapsulations of two TM atoms inside the B24N24 Cage were also considered. (c) 2008 American Institute of Physics.
机译:进行了第一性原理计算以系统地研究稳定性。掺杂在BnNn(n = 12,16,20,24,28)笼中的3d和4d过渡金属(TM)原子的磁特性。在这些笼子中,根据计算出的形成热,B24N24是封装3d和4d TM原子的最佳笼子。在B24N24笼子内部,元素周期表中属于同一族的3d和4d TM掺杂物表现出相似的磁行为。除Ni,Zr和Pd外,大多数3d和4d TM原子在B24N24笼中掺杂后仍保持磁性。 3d(Sc,Ti和V除外)和4d掺杂剂的剩余矩的大小为。从自由原子还原。能隙位于掺杂的过渡金属原子处。还考虑了B24N24笼子内部两个TM原子的封装。 (c)2008年美国物理研究所。

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