arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1002.1124cond-mat.mtrl-scicond-mat.other
收藏

反钙钛矿型InNCo3和InNNi3的弹性性质和电子结构

Elastic properties and electronic structures of antiperovskite-type InNCo3 and InNNi3

Z. F. Hou

摘要:

我们已经进行了第一性原理计算,研究弹性,电子结构和磁性的InNCo 3和InNNi 3。独立的弹性常数是由总能量的二阶导数作为应变的函数导出的,弹性模量是根据Voigt-Reuss-Hill近似预测的。我们的计算表明,体积模量的InNCo 3是略大于InNNi 3。对于InNCo 3,铁磁态在能量上优于顺磁态,而InNNi 3的基态是稳定的顺磁(非磁性)态。这是由于InNCo_3和InNNi_3中N-Co和N-Ni原子的2 p-3d杂化强度不同所致。

英文摘要:

We have performed the first-principles calculations to study the elasticity, electronic structure, and magnetism of InNCo3 and InNNi3. The independent elastic constants are derived from the second derivative of total energy as a function of strain, and the elastic modulus are predicted according to the Voigt-Reuss-Hill approximation. Our calculations show that the bulk modulus of InNCo3 is slightly larger than that of InNNi3. For InNCo3 the ferromagnetic state is energetically preferable to the paramagnetic state, while the ground state of InNNi3 is a stable paramagnetic (non-magnetic) state. This is due to the different strength of 2p-3d hybridization for the N-Co and N-Ni atoms in InNCo3 and InNNi3.

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。

↑