Intrinsic ferromagnetic properties in Cr-doped ZnO diluted magnetic semiconductors

Liu, Yang; Yang, Yanting; Yang, Jing; Guan, Qingxin; Liu, Huilian; Yang, Lili; Zhang, Yongjun; Wang, Yaxin; Wei, Maobin; Liu, Xiaoyan; Fei, Lianhua; Cheng, Xu

doi:10.1016/j.jssc.2011.03.049

Cited by 78 publications

(21 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…the polycrystalline, thin films and nano-crystals have been reported in the most recent studies [6][7][8][9][10][11]. Tan et al [6] studied the polycrystalline Eu-doped ZnO films.…”

Section: Introductionmentioning

confidence: 99%

Study of electronic and magnetic properties of vacuum annealed Cr doped ZnO

Singhal

2012

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…the polycrystalline, thin films and nano-crystals have been reported in the most recent studies [6][7][8][9][10][11]. Tan et al [6] studied the polycrystalline Eu-doped ZnO films.…”

Section: Introductionmentioning

confidence: 99%

Study of electronic and magnetic properties of vacuum annealed Cr doped ZnO

Singhal

2012

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…2. The spectra are almost equal to the typical XRD spectrum of undoped ZnO nanoparticles reported from other experiments [11][12][13][14][15]. The evolution of lattice parameters a and c as well as the unit cell volume, V, with doping concentrations by means of MAUD program [16] using Rietveld method are also tabulated in Table.1.…”

Section: Methodsmentioning

confidence: 53%

Synthesis, physical properties and catalytic activity of Cr-doped ZnO nanoparticles

Djaja¹,

Noorhidayati²,

Saleh³

2016

AIP Conference Proceedings

View full text Add to dashboard Cite

“…Such changes could result from the reduction in lattice constant and decrease of the volume of the unit cell. The lattice contraction could be ascribed to the variation of the surface stresses, due to the crystallite size decrease [21]. Other possible explanation is partial substitution of zinc ions in ZnO structure by smaller chromium ions.…”

Section: Phase Compositionmentioning

confidence: 99%

Chromium-modified zinc oxides

Gac

Zawadzki

Słowik

et al. 2016

J Therm Anal Calorim

View full text Add to dashboard Cite

Zinc oxides modified with chromium were prepared by the co-precipitation method. Samples were calcined at 400°C. Structural and surface properties of materials were studied by means of transmission electron microscopy, X-ray diffraction and low-temperature nitrogen adsorption methods. Temperature-programmed reduction methods were used for investigation of the influence of chromium on the redox properties of zinc oxides. The nature of surface sites and the course of surface reactions occurred during methanol decomposition were determined by the temperature-programmed desorption of methanol with detection of evolved gasses by mass spectrometry and in situ diffuse reflectance infrared Fourier transform spectroscopy. We have found that modification of ZnO with chromium led to the increase of the specific surface area of oxides and decrease of mean crystallite size of ZnO. Partial incorporation of chromium ions to the hexagonal ZnO structure, formation of strongly dispersed spinel (ZnCr 2 O 4 ) and chromium zinc oxide species (ZnOÁCrO 3 ) was observed. We have stated that methanol was adsorbed on the surface of ZnO at 100°C mainly via formation of methoxy species, and the main products of methanol desorption were carbon monoxide and hydrogen. The presence of chromium facilitated direct oxidation of methoxy groups to formate species at low temperatures (*100°C) and their transformation to hydrogen and carbon dioxide during temperature-programmed desorption. The enhanced transformation of methoxy to formate species was attributed to the labile oxygen in chromium-modified zinc oxides.

show abstract

Intrinsic ferromagnetic properties in Cr-doped ZnO diluted magnetic semiconductors

Cited by 78 publications

References 39 publications

Study of electronic and magnetic properties of vacuum annealed Cr doped ZnO

Study of electronic and magnetic properties of vacuum annealed Cr doped ZnO

Synthesis, physical properties and catalytic activity of Cr-doped ZnO nanoparticles

Chromium-modified zinc oxides

Contact Info

Product

Resources

About