Formation and electrical conductivity of air-sinterable Nd(Cr sub(1 - x)Mg sub(x ))O sub(3)
In Mg super(2+)-substituted NdCrO sub(3), single-phase perovskite compounds Nd(Cr sub(1 - x)Mg sub(x))O sub(3), where x=0 to 0.25, have been formed at low temperatures by decomposition of Nd(Cr sub(1 - x)Mg sub(x))O sub(4), which crystallize from amorphous materials prepared by the hydrazine method....
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| Published in | Solid state ionics Vol. 149; no. 1-2; pp. 107 - 113 |
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| Main Authors | , , , |
| Format | Journal Article |
| Language | English |
| Published |
01.07.2002
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| Online Access | Get full text |
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| Abstract | In Mg super(2+)-substituted NdCrO sub(3), single-phase perovskite compounds Nd(Cr sub(1 - x)Mg sub(x))O sub(3), where x=0 to 0.25, have been formed at low temperatures by decomposition of Nd(Cr sub(1 - x)Mg sub(x))O sub(4), which crystallize from amorphous materials prepared by the hydrazine method. Nd(Cr sub(1 - x)Mg sub(x))O sub(3) powders consisting of submicrometer-size particles are highly sinterable; dense materials can be fabricated by sintering for 4 h at 1800 degree C under atmospheric pressure. The relative densities, grain sizes, and electrical conductivities increase with increased Mg super(2+) content. Nd(Cr sub(0.75)Mg sub(0.25))O sub(3) materials show an excellent electrical conductivity of 1.4 x 10 super(3) S m super(-1) at 1000 degree C. copyright 2002 Published by Elsevier Science B.V. |
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| AbstractList | In Mg super(2+)-substituted NdCrO sub(3), single-phase perovskite compounds Nd(Cr sub(1 - x)Mg sub(x))O sub(3), where x=0 to 0.25, have been formed at low temperatures by decomposition of Nd(Cr sub(1 - x)Mg sub(x))O sub(4), which crystallize from amorphous materials prepared by the hydrazine method. Nd(Cr sub(1 - x)Mg sub(x))O sub(3) powders consisting of submicrometer-size particles are highly sinterable; dense materials can be fabricated by sintering for 4 h at 1800 degree C under atmospheric pressure. The relative densities, grain sizes, and electrical conductivities increase with increased Mg super(2+) content. Nd(Cr sub(0.75)Mg sub(0.25))O sub(3) materials show an excellent electrical conductivity of 1.4 x 10 super(3) S m super(-1) at 1000 degree C. copyright 2002 Published by Elsevier Science B.V. |
| Author | Hirota, Ken Kunifusa, Yoshiyuki Yoshinaka, Masaru Yamaguchi, Osamu |
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| Snippet | In Mg super(2+)-substituted NdCrO sub(3), single-phase perovskite compounds Nd(Cr sub(1 - x)Mg sub(x))O sub(3), where x=0 to 0.25, have been formed at low... |
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| Title | Formation and electrical conductivity of air-sinterable Nd(Cr sub(1 - x)Mg sub(x ))O sub(3) |
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