Origin of magnetic properties in carbon implanted ZnO nanowires.

Origin of magnetic properties in carbon implanted ZnO nanowires.
复制标题

DOI:
10.1038/s41598-018-25948-x
复制
发表时间:
2018-05-17
期刊:
影响因子:
4.6
通讯作者:
Pong WF
Pong WF
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Wang YF;Shao YC;Hsieh SH;Chang YK;Yeh PH;Hsueh HC;Chiou JW;Wang HT;Ray SC;Tsai HM;Pao CW;Chen CH;Lin HJ;Lee JF;Wu CT;Wu JJ;Chang YM;Asokan K;Chae KH;Ohigashi T;Takagi Y;Yokoyama T;Kosugi N;Pong WF

文献摘要

参考文献

被引文献

相似文献

利用各种基于同步辐射的光谱和显微技术,通过温和的C+离子注入方法,研究了碳掺杂的氧化锌纳米线(ZnO-C:NW)的室温铁磁性。光致发光和磁滞回线表明,C的注入减少了ZnO-NW的本征表面缺陷数,增加了饱和磁化强度。X射线吸收光谱研究证实,间隙注入的C离子构成了ZnO-C:NW中的大部分缺陷。O和C K边的X-射线磁性圆二色谱分别表明,在ZnO-C:NW的表面区,未成对的/悬挂的O2p键数目减少,注入的C离子的C2p衍生态强烈地影响了表面和体区的净自旋极化。此外,这些发现与C注入的表面和体区氧化锌的第一性原理计算很好地吻合,这些第一性原理分别突出了注入的C对表面和体相中的ZnO-C:NW的铁磁性的抑制和增强的稳定性。
Various synchrotron radiation-based spectroscopic and microscopic techniques are used to elucidate the room-temperature ferromagnetism of carbon-doped ZnO-nanowires (ZnO-C:NW) via a mild C+ ion implantation method. The photoluminescence and magnetic hysteresis loops reveal that the implantation of C reduces the number of intrinsic surface defects and increases the saturated magnetization of ZnO-NW. The interstitial implanted C ions constitute the majority of defects in ZnO-C:NW as confirmed by the X-ray absorption spectroscopic studies. The X-ray magnetic circular dichroism spectra of O and C K-edge respectively indicate there is a reduction in the number of unpaired/dangling O 2p bonds in the surface region of ZnO-C:NW and the C 2p-derived states of the implanted C ions strongly affect the net spin polarization in the surface and bulk regions of ZnO-C:NW. Furthermore, these findings corroborate well with the first-principles calculations of C-implanted ZnO in surface and bulk regions, which highlight the stability of implanted C for the suppression and enhancement of the ferromagnetism of the ZnO-C:NW in the surface region and bulk phase, respectively.
DOI: 10.1103/physrevb.54.11169
发表时间: 1996-10-15
期刊: PHYSICAL REVIEW B
影响因子: 3.7
作者:
Kresse, G;Furthmuller, J
通讯作者: Furthmuller, J
DOI: 10.1103/physrevlett.103.016404
发表时间: 2009-07-03
影响因子: 8.6
作者:
Chan, J. A.;Lany, Stephan;Zunger, Alex
通讯作者: Zunger, Alex
DOI: 10.1021/jp300837f
发表时间: 2012-03-22
影响因子: 3.7
作者:
Guglieri, C.;Laguna-Marco, M. A.;Chaboy, J.
通讯作者: Chaboy, J.
DOI: 10.1021/nl070198m
发表时间: 2007-06-01
期刊: NANO LETTERS
影响因子: 10.8
作者:
Garcia, M. A.;Merino, J. M.;Hernando, A.
通讯作者: Hernando, A.
DOI: 10.1063/1.1802373
发表时间: 2004-10-11
影响因子: 4
作者:
Chiou, JW;Kumar, KPK;Liu, SC
通讯作者: Liu, SC