Al and Ni co-doped ZnO films with room temperature ferromagnetism, low resistivity and high transparence

AbstractNanosized Co-doped ZnO samples were synthesized using an ultrasonic spray assisted chemical vapour deposition method. Microstructural and magnetic properties of these samples were studied. The room-temperature ferromagnetism was observed in the Co-doped ZnO. Also, x-ray analysis revealed a wurtzite ZnO structure with a small change of the lattice constants due to the doping of Co in ZnO. Raman spectroscopy of the Co-doped ZnO films indicated direct substitution of Co. Scanning electron microscopy showed nanostructured Co-doped ZnO with a ring or cup shape. Transmission electron microscopy analysis revealed nano grains within the rings of an average diameter of around 10 nm. Both energy dispersive spectroscopy and energy-filtered transmission electron microscopy indicated a uniform distribution of Co.

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Evidence of Oxygen Vacancy Mediated Room-Temperature-Ferromagnetism in Co-Doped ZnO Films Upon Hydrogen Treatment

Integrated Ferroelectrics ◽

10.1080/10584587.2013.786929 ◽

2013 ◽

Vol 144 (1) ◽

pp. 1-8 ◽

Cited By ~ 4

Author(s):

S. J. Chen ◽

H. Y. Xu ◽

S. X. Wang ◽

K. Suzuki

Keyword(s):

Oxygen Vacancy ◽

Room Temperature ◽

Room Temperature Ferromagnetism ◽

Zno Films ◽

Hydrogen Treatment ◽

Doped Zno ◽

Co Doped

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Defects related room temperature ferromagnetism in p-type (Mn, Li) co-doped ZnO films deposited by reactive magnetron sputtering

Applied Surface Science ◽

10.1016/j.apsusc.2009.10.086 ◽

2010 ◽

Vol 256 (8) ◽

pp. 2453-2457 ◽

Cited By ~ 28

Author(s):

C.W. Zou ◽

H.J. Wang ◽

M.L. Yi ◽

M. Li ◽

C.S. Liu ◽

...

Keyword(s):

Magnetron Sputtering ◽

Room Temperature ◽

Room Temperature Ferromagnetism ◽

Reactive Magnetron Sputtering ◽

Zno Films ◽

Reactive Magnetron ◽

Doped Zno ◽

P Type ◽

Co Doped

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Effect of defects on room-temperature ferromagnetism of Cr-doped ZnO films

Scripta Materialia ◽

10.1016/j.scriptamat.2008.10.002 ◽

2009 ◽

Vol 60 (4) ◽

pp. 214-217 ◽

Cited By ~ 61

Author(s):

L.J. Zhuge ◽

X.M. Wu ◽

Z.F. Wu ◽

X.M. Chen ◽

Y.D. Meng

Keyword(s):

Room Temperature ◽

Room Temperature Ferromagnetism ◽

Zno Films ◽

Doped Zno

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Room temperature deposition of highly conductive and transparent hydrogen and tungsten co-doped ZnO films for thin film solar cells applications

Solar Energy Materials and Solar Cells ◽

10.1016/j.solmat.2012.12.008 ◽

2013 ◽

Vol 110 ◽

pp. 94-97 ◽

Cited By ~ 14

Author(s):

Yanfeng Wang ◽

Xiaodan Zhang ◽

Qian Huang ◽

Changchun Wei ◽

Ying Zhao

Keyword(s):

Thin Film ◽

Solar Cells ◽

Room Temperature ◽

Thin Film Solar Cells ◽

Zno Films ◽

Temperature Deposition ◽

Doped Zno ◽

Co Doped ◽

And Tungsten

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Enhanced room temperature ferromagnetism and photoluminescence behavior of Cu-doped ZnO co-doped with Mn

Physica E Low-dimensional Systems and Nanostructures ◽

10.1016/j.physe.2015.02.010 ◽

2015 ◽

Vol 69 ◽

pp. 354-359 ◽

Cited By ~ 17

Author(s):

M. Ashokkumar ◽

S. Muthukumaran

Keyword(s):

Room Temperature ◽

Room Temperature Ferromagnetism ◽

Doped Zno ◽

Photoluminescence Behavior ◽

Co Doped

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The Room Temperature Ferromagnetism of (N, Co) Co-Doped ZnO Nanopaticles

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.577.19 ◽

2014 ◽

Vol 577 ◽

pp. 19-22

Author(s):

Ping Cao ◽

Yue Bai ◽

Zhi Qu

Keyword(s):

Zno Nanoparticles ◽

Room Temperature ◽

Room Temperature Ferromagnetism ◽

Crystal Lattices ◽

Grown Sample ◽

N Doping ◽

Doped Zno ◽

Zno Crystal ◽

Zno Nanopaticles ◽

Co Doped

Co-doped ZnO nanoparticles were fabricated by an electrodeposition method. The XPS results show Co ions have doped into the ZnO crystal lattices successfully. The as-grown sample has no ferromagnetism at room temperature. But after an ammine plasma treatment the room temperature ferromagnetism were detected on Co0.04Zn0.96O nanoparticles. The Hall measurement reveals after the treatment the resistivity increase by three orders of magnitude. Although the aspect conductivity is n type, some holes generated by N doping play an important role to induce the ferromagnetic properties for Co doped ZnO sample.

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