Combinatorial fabrication and characterization of ternary la 2O3-Mn2O3-Co3O 4 composition spreads

Dmitry Anatolyevich Kukuruznyak; Parhat Ahmet; Atsushi Yamamoto; Fumio Ohuchi; Toyohiro Chikyow

doi:10.1143/JJAP.44.6164

Combinatorial fabrication and characterization of ternary la ₂O₃-Mn₂O₃-Co₃O ₄ composition spreads

Dmitry Anatolyevich Kukuruznyak, Parhat Ahmet, Atsushi Yamamoto, Fumio Ohuchi, Toyohiro Chikyow

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We describe the screening of large combinatorial oxide libraries for determining their electric transport characteristics. Complete full ternary composition spreads of La₂O₃-Mn₂O ₃-Co₃O₄ oxide alloys were deposited onto single conducting Nb-doped SrTiO₃ substrates by the pulsed laser deposition technique incorporating a moving shutter and a rotating substrate holder. The electrical resistance of the spreads was determined using a custom-designed scanning conducting probe. We found that a single electrically conducting area in the ternary spread develops into two branches to LaMnO₃ perovskites close to the ideal LaMnO₃ stoichiometry and to a wide La_0.65Co_0.35O_x-La_0.20Co _0.80O_x system with perovskite-related structures. We also discovered that compositions along the tie line [La_0.20Co _0.65Mn_0.15O_X-La_0.57Co _0.20Mn_0.23O_X] exhibit the weakest temperature dependence and therefore could be used in fabricating of stable thin film resistors and gas sensors.

Original language	English
Pages (from-to)	6164-6166
Number of pages	3
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	44
Issue number	8
DOIs	https://doi.org/10.1143/JJAP.44.6164
Publication status	Published - 2005 Aug 5
Externally published	Yes

Keywords

Combinatorial screening
Composition spread
Lanthanum cobaltite
Lanthanum manganite
Refractory resistor
Scanning probe
Sensor

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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Combinatorial fabrication and characterization of ternary la ₂O₃-Mn₂O₃-Co₃O ₄ composition spreads. / Kukuruznyak, Dmitry Anatolyevich; Ahmet, Parhat; Yamamoto, Atsushi; Ohuchi, Fumio; Chikyow, Toyohiro.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 44, No. 8, 05.08.2005, p. 6164-6166.

Research output: Contribution to journal › Article › peer-review

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abstract = "We describe the screening of large combinatorial oxide libraries for determining their electric transport characteristics. Complete full ternary composition spreads of La2O3-Mn2O 3-Co3O4 oxide alloys were deposited onto single conducting Nb-doped SrTiO3 substrates by the pulsed laser deposition technique incorporating a moving shutter and a rotating substrate holder. The electrical resistance of the spreads was determined using a custom-designed scanning conducting probe. We found that a single electrically conducting area in the ternary spread develops into two branches to LaMnO3 perovskites close to the ideal LaMnO3 stoichiometry and to a wide La0.65Co0.35Ox-La0.20Co 0.80Ox system with perovskite-related structures. We also discovered that compositions along the tie line [La0.20Co 0.65Mn0.15OX-La0.57Co 0.20Mn0.23OX] exhibit the weakest temperature dependence and therefore could be used in fabricating of stable thin film resistors and gas sensors.",

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AU - Ohuchi, Fumio

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