Magnetic transparent conducting oxide film and method of making
Abstract
Cobalt-nickel oxide films of nominal 100 nm thickness, and resistivity as low as 0.06 .OMEGA..multidot.cm have been deposited by spin-casting from both aqueous and organic precursor solutions followed by annealing at 450.degree. C. in air. Films deposited on sapphire substrates exhibit a refractive index of about 1.7 and are relatively transparent in the wavelength region from 0.6 to 10.0 .mu.m. They are also magnetic. The electrical and spectroscopic properties of the oxides have been studied as a function of x=Co/(Co+Ni) ratio. An increase in film resistivity was found upon substitution of other cations (e.g., Zn.sup.2+, Al.sup.3+) for Ni in the spinel structure. However, some improvement in the mechanical properties of the films resulted. On the other hand, addition of small amounts of Li decreased the resistivity. A combination of XRD, XPS, UV/Vis and Raman spectroscopy indicated that NiCo.sub.2 O.sub.4 is the primary conducting component and that the conductivity reaches a maximum at this stoichiometry. When x<0.67, NiO forms leading to an increase in resistivity; when x>0.67, the oxide was all spinel but the increased Co content lowered the conductivity. The influence of cation charge state and site occupancy in the spinel structure markedly affects calculated electron band structures and contributesmore »
- Inventors:
- Issue Date:
- Research Org.:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1174942
- Patent Number(s):
- 6761985
- Application Number:
- 09/972,237
- Assignee:
- Battelle Memorial Institute (Richland, WA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C03 - GLASS C03C - CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01B - CABLES
- DOE Contract Number:
- AC06-76RL01830
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Windisch, Jr., Charles F., Exarhos, Gregory J., and Sharma, Shiv K. Magnetic transparent conducting oxide film and method of making. United States: N. p., 2004.
Web.
Windisch, Jr., Charles F., Exarhos, Gregory J., & Sharma, Shiv K. Magnetic transparent conducting oxide film and method of making. United States.
Windisch, Jr., Charles F., Exarhos, Gregory J., and Sharma, Shiv K. Tue .
"Magnetic transparent conducting oxide film and method of making". United States. https://www.osti.gov/servlets/purl/1174942.
@article{osti_1174942,
title = {Magnetic transparent conducting oxide film and method of making},
author = {Windisch, Jr., Charles F. and Exarhos, Gregory J. and Sharma, Shiv K.},
abstractNote = {Cobalt-nickel oxide films of nominal 100 nm thickness, and resistivity as low as 0.06 .OMEGA..multidot.cm have been deposited by spin-casting from both aqueous and organic precursor solutions followed by annealing at 450.degree. C. in air. Films deposited on sapphire substrates exhibit a refractive index of about 1.7 and are relatively transparent in the wavelength region from 0.6 to 10.0 .mu.m. They are also magnetic. The electrical and spectroscopic properties of the oxides have been studied as a function of x=Co/(Co+Ni) ratio. An increase in film resistivity was found upon substitution of other cations (e.g., Zn.sup.2+, Al.sup.3+) for Ni in the spinel structure. However, some improvement in the mechanical properties of the films resulted. On the other hand, addition of small amounts of Li decreased the resistivity. A combination of XRD, XPS, UV/Vis and Raman spectroscopy indicated that NiCo.sub.2 O.sub.4 is the primary conducting component and that the conductivity reaches a maximum at this stoichiometry. When x<0.67, NiO forms leading to an increase in resistivity; when x>0.67, the oxide was all spinel but the increased Co content lowered the conductivity. The influence of cation charge state and site occupancy in the spinel structure markedly affects calculated electron band structures and contributes to a reduction of p-type conductivity, the formation of polarons, and the reduction in population of mobile charge carriers that tend to limit transmission in the infrared.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {7}
}
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Works referenced in this record:
Synthesis and characterization of transparent conducting oxide cobalt–nickel spinel films
journal, July 2001
- Windisch, Charles F.; Ferris, Kim F.; Exarhos, Gregory J.
- Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 19, Issue 4
The reduction of oxygen on nickel-cobalt oxides—II
journal, August 1974
- King, W. J.; Tseung, A. C. C.
- Electrochimica Acta, Vol. 19, Issue 8
Lithium doping of cobalt-nickel spinel oxides at low temperatures
journal, June 1996
- Zhecheva, E.; Stoyanova, R.; Zarkova, L.
- Materials Research Bulletin, Vol. 31, Issue 6
Transparent Conducting Oxides
journal, August 2000
- Ginley, David S.; Bright, Clark
- MRS Bulletin, Vol. 25, Issue 8
Special points for Brillouin-zone integrations
journal, June 1976
- Monkhorst, Hendrik J.; Pack, James D.
- Physical Review B, Vol. 13, Issue 12, p. 5188-5192
Infrared transparent spinel films with p-type conductivity
journal, November 2001
- Windisch, C. F.; Exarhos, G. J.; Ferris, K. F.
- Thin Solid Films, Vol. 398-399
Localized deposition of zinc oxide films by automated fluid dispensing method
journal, July 2000
- Domansky, Karel; Rose, Aimee; Grover, William H.
- Materials Science and Engineering: B, Vol. 76, Issue 2
Artificial eyelid for protection of optical sensors
conference, June 2000
- Goodwin-Johansson, Scott H.; Holloway, Paul H.; McGuire, Gary
- SPIE's 7th Annual International Symposium on Smart Structures and Materials, SPIE Proceedings
Semiconducting and electrocatalytic properties of sputtered cobalt oxide films
journal, June 1990
- Schumacher, Lynn C.; Holzhueter, Ingo B.; Hill, Ian R.
- Electrochimica Acta, Vol. 35, Issue 6
Iterative minimization techniques for ab initio total-energy calculations: molecular dynamics and conjugate gradients
journal, October 1992
- Payne, M. C.; Teter, M. P.; Allan, D. C.
- Reviews of Modern Physics, Vol. 64, Issue 4
Spectroscopic characterization of processing-induced property changes in doped ZnO films
journal, October 1997
- Exarhos, Gregory J.; Rose, Aimee; Windisch, Charles F.
- Thin Solid Films, Vol. 308-309
Self-interaction correction to density-functional approximations for many-electron systems
journal, May 1981
- Perdew, J. P.; Zunger, Alex
- Physical Review B, Vol. 23, Issue 10, p. 5048-5079
Raman study of the phonon halfwidths and the phonon—plasmon coupling in ZnO
journal, September 1983
- Bairamov, B. H.; Heinrich, A.; Irmer, G.
- physica status solidi (b), Vol. 119, Issue 1
Characterization of Spinel-Type Cobalt and Nickel Oxide Thin Films by X-Ray Near Grazing Diffraction, Transmission and Reflectance Spectroscopies, and Cyclic Voltammetry
journal, January 1995
- Nkeng, P.
- Journal of The Electrochemical Society, Vol. 142, Issue 6
Soft self-consistent pseudopotentials in a generalized eigenvalue formalism
journal, April 1990
- Vanderbilt, David
- Physical Review B, Vol. 41, Issue 11, p. 7892-7895
Growth and electrical properties of pure and Ni-doped Co3O4 single crystals
journal, August 1984
- Tareen, J. A. K.; Małecki, A.; Doumerc, J. P.
- Materials Research Bulletin, Vol. 19, Issue 8
Characterization of cobaltite spinels by reflectance spectroscopy
journal, October 1996
- Lefez, B.; Nkeng, P.; Lopitaux, J.
- Materials Research Bulletin, Vol. 31, Issue 10