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Electrical screening of ternary NiO-Mn2O3-Co3O4 composition spreads |
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| Authors: | DA Kukuruznyak P Ahmet A Yamamoto |
| Institution: | a National Institute for Materials Science, Nano-Materials Assembly Group, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan b Advanced Industrial Science and Technology Institute (AIST), Electrotechnical Laboratory, 1-1-4 Umezono, Tsukuba, Ibaraki, Japan c University of Washington, Materials Science and Engineering Department, Box 352120, Seattle, WA 98195, USA |
| Abstract: | The compositional optimization of infrared-transparent conducting oxides was performed using high throughput screening of combinatorial libraries. Complete ternary composition spreads of NiO-Mn2O3-Co3O4 alloys were deposited onto conducting Nb-doped SrTiO3 substrates using the pulsed laser deposition technique. Resistance-temperature relations of each composition in the spread were determined using a custom-designed scanning probe. The binary NiCo2O4 oxide showed the lowest electrical resistivity of about 0.1 Ω cm but unacceptably large resistance-temperature dependence (3.5%/°C). Electrically conducting ternary alloys along the line Mn0.45Ni0.63Co1.92O4-Mn0.60Ni0.72Co1.68O4-Mn0.69Ni0.81Co1.50O4 exhibited much lower temperature sensitivity (of about 1.5%/°C) as well as electrical resistance comparable to that of NiCo2O4. From this screening we propose new compounds for the thin-film ITCO sensors. |
| Keywords: | 81 05 Je 81 15 Fg 07 79 &minus v 72 80 &minus r |
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