Names | |
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Other names
Neodymium(III) nickelate
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Identifiers | |
3D model (
JSmol)
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|
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Properties | |
NdNiO3 | |
Molar mass | 250.932 g·mol−1 |
Hazards | |
GHS labelling: [1] | |
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Danger | |
H317, H350, H372 | |
P261, P263, P280, P405, P501 | |
Related compounds | |
Other
anions
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Neodymium(III) oxide Neodymium(III) acetate Neodymium(III) hydride |
Other
cations
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europium nickelate lanthanum nickelate |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Neodymium nickelate is a nickelate of neodymium with a chemical formula NdNiO3. In this compound, the neodymium atom is in the +3 oxidation state.[ citation needed]
Neodymium nickelate can be prepared by dissolving neodymium(III) oxide and nickel(II) oxide in nitric acid, followed by heating the mixture in an oxygen atmosphere. [2]
It can also be prepared by pyrolyzing a mixture of nickel nitrate and neodymium nitrate. [2] [3]
It decomposes in high temperature (950 °C) by nitrogen: [2]
It can also be reduced to the monovalent nickel compound NdNiO2 by sodium hydride at 160 °C. [4]
Neodymium nickelate shows metal-insulator transition (MIT) under low temperature. [5] [6] The temperature at which it transforms (TMIT) is 200K, [7] which is higher than praseodymium nickelate (130K) but lower than samarium nickelate (400K). [5] [7] [8][ page needed] It transforms from antiferromagnetism to paramagnetism. It has demonstrated to be a first-order phase transition (this applies for praseodymium nickelate as well). [5] The temperature (TN) can be changed by varying the NiO6 octahedral distortion. [5] [6] It is the only lathanide nickelate to have the same TMIT as TN. [5]
In a 2010 study, it was found that neodymium nickelate as an anode material provided 1.7 times the current density of typical LSM anodes when integrated into a commercial SOEC and operated at 700 °C, and approximately 4 times the current density when operated at 800 °C. The increased performance is postulated to be due to higher "overstoichiometry" of oxygen in the neodymium nickelate, making it a successful conductor of both ions and electrons. [9]
Neodymium nickelate can also be used in electrocatalysts, synapse transistors, photovoltaics, memory resistors, biosensors, and electric-field sensors. [5]