Surface-passivation-induced metallic and magnetic properties of ZnO graphitic sheet

Yang Zhang; Shun-Qing Wu; Yu-Hua Wen; Zi-Zhong Zhu
May 2010
Applied Physics Letters;5/31/2010, Vol. 96 Issue 22, p223113
Academic Journal
First-principles calculations were used to investigate the electronic and magnetic properties of surface-passivated ZnO graphitic sheets. The results show that ZnO graphitic sheet with hydrogenation on both O and Zn atoms exhibits indirect band gap, while ZnO graphitic sheet is found to be metallic for hydrogenation on only O atoms and magnetic semiconducting for surface passivation by H or NH2 on only Zn atoms. The relative stability of ZnO graphitic sheet passivated by H or NH2 has also been discussed.


Related Articles

  • Magnetic Properties and Superconductivity in GdFeAsO1− xF x. Cui, Y. J.; Chen, Y. L.; Cheng, C. H.; Yang, Y.; Zhang, Y.; Zhao, Y. // Journal of Superconductivity & Novel Magnetism;Jul2010, Vol. 23 Issue 5, p625 

    Abstract A series of GdFeAsO1− xF x ( x=0,0.1, 0.2, and 0.25) samples have been synthesized with conventional solid-state method. The phase purity is significantly improved by using Fe2O3 as the source of oxygen, compared to those prepared using Gd2O3 as the precursor. The lattice...

  • A perspective of recent progress in ZnO diluted magnetic semiconductors. Yang, Zheng // Applied Physics A: Materials Science & Processing;Aug2013, Vol. 112 Issue 2, p241 

    ZnO has long been considered as a promising candidate material for diluted magnetic semiconductors, owing to its theoretically predicted and experimentally observed above-room-temperature ferromagnetism and long spin-coherence time. In this brief perspective, recent progress in ZnO diluted...

  • Electroluminescence of ZnO-based p- i- n structures fabricated by the ultrasound-spraying method. Khabibullaev, P. K.; Yuldashev, Sh. U.; Nusretov, R. A.; Khvan, I. V. // Doklady Physics;Jun2007, Vol. 52 Issue 6, p300 

    The article discusses the use of ultrasound-spraying method in determining the electrophysical and optical properties of thin zinc oxide (ZnO) films. Zinc oxide is a direct-gap semiconductor and a promising material from the basis of the fabrication of visible-radiation sources operating in blue...

  • Enhancement of electrical conductivity in CoO-SiO2 nanoglasses and large magnetodielectric effect in ZnO-nanoglass composites. Chatterjee, Soumi; Maiti, Ramaprasad; Saha, Shyamal Kumar; Chakravorty, Dipankar // Journal of Applied Physics;2015, Vol. 117 Issue 17, p174303-1 

    Nanoglasses of compositions xCoO.(100-x)SiO2 (mol.%) with x having values 10, 15, and 20, respectively, were grown within the nanopores of a pellet comprising of ZnO nanoparticles by soaking the latter in a suitable sol followed by necessary heat treatment. Both Co2+ and Co3+ ions were present...

  • The E3 center in zinc oxide: Evidence for involvement of hydrogen. Hupfer, A.; Bhoodoo, C.; Vines, L.; Svensson, B. G. // Applied Physics Letters;3/3/2014, Vol. 104 Issue 9, p1 

    Proton implantation is shown to increase the concentration of the so called and commonly observed E3 defect level in zinc oxide (ZnO). Box and single profiles of protons with doses ranging from 6 s 1010 cm-2 to 4:3 s 1012 cm-2 were implanted into hydrothermally grown ZnO samples with original...

  • Structural, electronic and magnetic properties of V2O5-x: An ab initio study. Xiao, Z. R.; Guo, G. Y. // Journal of Chemical Physics;6/7/2009, Vol. 130 Issue 21, p214704 

    Pure V2O5 is a diamagnetic layered semiconductor with many applications such as catalysis. In this paper, we study oxygen vacancy-induced changes in the atomic and electronic structures as well as magnetic properties of V2O5-x within spin density functional theory with generalized gradient...

  • Low-power memory device with NiSi2 nanocrystals embedded in silicon dioxide layer. Yeh, P. H.; Yu, C. H.; Chen, L. J.; Wu, H. H.; Liu, P. T.; Chang, T. C. // Applied Physics Letters;11/7/2005, Vol. 87 Issue 19, p193504 

    A metal-oxide-semiconductor structure with NiSi2 nanocrystals embedded in the SiO2 layer has been fabricated. A pronounced capacitance-voltage hysteresis was observed with a memory window of 1 V under the 2 V programming voltage. The processing of the structure is compatible with the current...

  • A study of structural, optical and magnetic properties of Cr, Ce co-doping in ZnO diluted magnetic semiconductors. Liu, Hui; Fei, Lian; Liu, Hong; Yang, Jing; Jin, Xin; Gao, Ming; Liu, Yang; Cheng, Xin; Zhang, Xu // Journal of Materials Science: Materials in Electronics;Jan2013, Vol. 24 Issue 1, p58 

    We present the structural, optical and magnetic properties of pure ZnO, ZnCrO and ZnCrCeO samples, the samples were synthesized by sol-gel method. The microstructures, optical and magnetic properties of samples were investigated by X-ray diffraction (XRD), transmission electron microscope ,...

  • A Comparative First-Principles Study of Fe-, Co- and FeCo-Doped ZnO with Wurtzite and Zinc Blende Structures. Mamouni, N.; Benyoussef, A.; Kenz, A.; Ez-Zahraouy, H.; Loulidi, M.; Saidi, E.; Bououdina, M. // Journal of Superconductivity & Novel Magnetism;Jul2012, Vol. 25 Issue 5, p1579 

    First-principles study of the electronic and magnetic properties of zinc-blende and wurtzite structures of Fe-, Co-, and FeCo-doped ZnO is presented. It is found that after doping, this diamagnetic material becomes ferromagnetic and half-metallic. It is also shown that the half-metallicity may...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics