Ferromagnetic and half-metallic behaviors of fullerene-cobalt polymer chains.

Ferromagnetic and half-metallic behaviors of fullerene-cobalt polymer chains.
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富勒烯-钴聚合物链的铁磁和半金属行为。

DOI:
10.1063/1.2832307
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发表时间:
2008
期刊:
The Journal of chemical physics
影响因子:
--
通讯作者:
H. Kang
H. Kang
中科院分区:
--
文献类型:
--
作者:
Xiang Xu;H. Kang

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我们给出了富勒烯和钴链交替的聚合物(C(60)-Co)(N)和(C(70)-Co)(N)的第一性原理计算结果。它们都倾向于铁磁基态。后者是半金属的,在电子输运中会产生100%的自旋极化,而前者是半导体。在每个富勒烯中包裹一个氮原子的聚合物(N@C(60)-Co)(N)和(N@C(70)-Co)(N)的磁矩是没有包裹氮原子的聚合物的四倍。所有这些结果都可以用pi(富勒烯)-d(Co)和pi(富勒烯)-p(N)杂化来解释。
We present the results of first-principles calculations for polymers (C(60)-Co)(n) and (C(70)-Co)(n), which consist of alternating chains of fullerenes and cobalt. Both of them favor a ferromagnetic ground state. The latter one is a half-metal which will give rise to 100% spin polarization in the electronic transport, while the former is a semiconductor. Polymers (N@C(60)-Co)(n) and (N@C(70)-Co)(n), which encapsulate a nitrogen atom in each fullerene have magnetic moments four times larger than those without encapsulated nitrogen atoms. All these results can be explained in terms of pi(fullerene)-d(Co) and pi(fullerene)-p(N) hybridizations.
Cox/C60 (x < 2. 8) 复合材料原子结构演化的量子化学研究
DOI: --
发表时间: 2007
期刊: J. Phys. Chem. A 111
影响因子: --
作者:
P.V. Avramov;H. Naramoto;S. Sakai;K. Narumi;V. Lavrentiev;Y. Maeda
通讯作者: Y. Maeda
C60 和 Co 混合物中的聚合物链
DOI: --
发表时间: 2006
期刊: Chemical Physics Letters 424
影响因子: --
作者:
V. Lavrentiev;H. Abe;H. Naramoto;S. Sakai;K. Narumi
通讯作者: K. Narumi