Transition Metal-Doped ZnO: A Comparison of Optical, Magnetic, and Structural Behavior of Bulk and Thin Films

ABSTRACTTransition metal-doped ZnO bulk crystals and thin films have been investigated to determine the effects of transition metal incorporation on optical, magnetic, and structural properties of ZnO. A modified melt growth technique was used to grow bulk Zn1-xMnxO, Zn1-xCoxO, and Zn1-xFexO. Optical transmission measurements show an apparent shift in absorption edge with increasing transition metal incorporation. Raman spectroscopy also shows increasing lattice disorder with increasing transition metal concentration. ZnO thin films doped with Ni, Co, and Gd were grown by metalorganic chemical vapor deposition (MOCVD). While the Co-doped thin films showed antiferromagnetic behavior, magnetic hysteresis was observed in the Ni-doped and Gd-doped thin films. Structural quality was verified with X-ray diffraction (XRD), and optical properties were investigated using room temperature photoluminescence (PL) and optical transmission measurements. Properties of ZnO:TM bulk crystals and thin films are compared and used to discuss possible origins of ferromagnetism in these materials.

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Study of preparation and characteristics of transition metal-doped ZnO: Li thin films deposited by magnetron co-sputtering*

Ferroelectrics ◽

10.1080/00150193.2019.1592463 ◽

2019 ◽

Vol 546 (1) ◽

pp. 120-128 ◽

Cited By ~ 1

Author(s):

Yan Liu ◽

Nan Ding ◽

Guang-Rui Gu ◽

Bao-Jia Wu

Keyword(s):

Thin Films ◽

Transition Metal ◽

Doped Zno ◽

Metal Doped

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Investigation of the room temperature ferro-magnetism in transition metal-doped ZnO thin films

Applied Physics A ◽

10.1007/s00339-020-04124-x ◽

2020 ◽

Vol 126 (12) ◽

Author(s):

Arun Kumar ◽

Pooja Dhiman ◽

Sarveena ◽

Sanjeev Aggarwal ◽

Mahavir Singh

Keyword(s):

Thin Films ◽

Transition Metal ◽

Room Temperature ◽

Zno Thin Films ◽

Doped Zno ◽

Metal Doped

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Optical properties of transition metal (Mn, Fe and V) doped Zinc Oxide ceramics and thin films

MRS Proceedings ◽

10.1557/proc-825-g2.7 ◽

2004 ◽

Vol 825 ◽

Author(s):

Neha Awasthi ◽

P. Bhattacharya ◽

R.S. Katiyar

Keyword(s):

Thin Films ◽

Transition Metal ◽

Band Gap ◽

Raman Spectra ◽

Glass Substrates ◽

Additional Mode ◽

Doped Zno ◽

Metal Doped ◽

Ceramic Targets ◽

Zno Ceramics

AbstractTransition metal doped (Mn, Fe and V) ZnO ceramics and their thin films were prepared by pulsed laser deposition on glass substrates. The ceramic targets did not show any additional phase formation from XRD measurement, except for high Fe concentrations. Optical absorption showed sub-band gap absorption for Mn doping. The band gap was shifted by 0.06 eV for V doped ZnO as concentration was increased to 10%. Micro Raman spectra showed some defect induced modes for all the transition metals doped ZnO ceramics. In V doped ZnO ceramics there was two phonon induced resonance Raman scattering with increase in dopant concentrations. Raman spectra for thin films did not show any significant additional modes for Mn and Fe. However V doped ZnO thin films showed an additional mode for concentration ≥5 %.

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Effect of Annealing on the Optical Properties of Transition Metal Doped ZnO Thin Films

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/73/1/012065 ◽

2015 ◽

Vol 73 ◽

pp. 012065 ◽

Cited By ~ 4

Author(s):

Jijoy P Mathew ◽

George Varghese ◽

Jacob Mathew

Keyword(s):

Thin Films ◽

Optical Properties ◽

Transition Metal ◽

Zno Thin Films ◽

Doped Zno ◽

Metal Doped

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Structural and compositional analysis of transition-metal-doped ZnO and GaN PLD thin films

Applied Surface Science ◽

10.1016/j.apsusc.2005.03.044 ◽

2005 ◽

Vol 248 (1-4) ◽

pp. 406-410 ◽

Cited By ~ 23

Author(s):

L.S. Dorneles ◽

D. O’Mahony ◽

C.B. Fitzgerald ◽

F. McGee ◽

M. Venkatesan ◽

...

Keyword(s):

Thin Films ◽

Transition Metal ◽

Compositional Analysis ◽

Doped Zno ◽

Metal Doped

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Characterization of dilute magnetic semiconducting transition metal doped ZnO thin films by sol–gel spin coating method

Applied Surface Science ◽

10.1016/j.apsusc.2014.06.093 ◽

2014 ◽

Vol 313 ◽

pp. 870-876 ◽

Cited By ~ 66

Author(s):

G. Vijayaprasath ◽

R. Murugan ◽

G. Ravi ◽

T. Mahalingam ◽

Y. Hayakawa

Keyword(s):

Thin Films ◽

Transition Metal ◽

Spin Coating ◽

Sol Gel ◽

Zno Thin Films ◽

Spin Coating Method ◽

Coating Method ◽

Doped Zno ◽

Metal Doped

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Investigation of the room temperature ferromagnetism in transition metal doped ZnO thin films

10.21203/rs.3.rs-44212/v1 ◽

2020 ◽

Author(s):

Arun Kumar ◽

Pooja Dhiman ◽

Sanjeev Aggarwal ◽

Mahavir Singh

Keyword(s):

Thin Films ◽

Transition Metal ◽

Structural Information ◽

Room Temperature Ferromagnetism ◽

Rf Magnetron Sputtering ◽

Zno Thin Films ◽

Average Grain Size ◽

Vis Spectroscopy ◽

Doped Zno ◽

Metal Doped

Abstract In the present work, we have studied the ferromagnetic nature of the (Fe, Ni) co-doped Zn1-x-y NiyFexO (y = 0.01 and x = 0.01, 0.03, 0.05) thin films fabricated through the RF magnetron sputtering on Silicon (400) substrate. Structural information of the deposited transition metal-doped ZnO thin films was studied through X-ray Diffraction (XRD) techniques. The surface roughness and average grain size of the thin films examine through Atomic Force Microscopy (AFM). The optical band gaps of the thin films have been analyzed through the UV-Vis spectroscopy and it was appropriate for the optoelectronic devices. Tau’c Plots were used for the calculation of the band gap by extrapolating the (αhν) = 0, the straight-line portion of the plot to zero absorption coefficient. The magnetic study of these thin films confirmed the ferromagnetic (FM) behavior. RT-FM in all the deposited thin films was discuses on the base of polaron percolation theory.

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