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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]

Preparation

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]

4 NdNiO3 → 2 Nd2NiO4 + 2 NiO + O2

It can also be reduced to the monovalent nickel compound NdNiO2 by sodium hydride at 160 °C.[4]

Physical properties

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]

Uses

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]

References

  1. ^ "Safety Data Sheet Neodymium Nickel Oxide" (PDF). LTS Research Laboratories, Inc. 13 July 2015. Retrieved 26 March 2022.
  2. ^ a b c Vassiliou, John K.; Hornbostel, Marc; Ziebarth, Robin; Disalvo, F.J. (1989). "Synthesis and properties of NdNiO3 prepared by low-temperature methods". Journal of Solid State Chemistry. 81 (2): 208–216. Bibcode:1989JSSCh..81..208V. doi:10.1016/0022-4596(89)90008-x. ISSN 0022-4596.
  3. ^ Escote, M.T.; da Silva, A.M.L.; Matos, J.R.; Jardim, R.F. (May 2000). "General Properties of Polycrystalline LnNiO3 (Ln=Pr, Nd, Sm) Compounds Prepared through Different Precursors". Journal of Solid State Chemistry. 151 (2): 298–307. Bibcode:2000JSSCh.151..298E. doi:10.1006/jssc.2000.8657.
  4. ^ M.A. Hayward, M.J. Rosseinsky (June 2003). "Synthesis of the infinite layer Ni(I) phase NdNiO2+x by low temperature reduction of NdNiO3 with sodium hydride". Solid State Sciences. 5 (6): 839–850. Bibcode:2003SSSci...5..839H. doi:10.1016/S1293-2558(03)00111-0.
  5. ^ a b c d e f Yang, Hongwei; Wen, Zhiwei; Shu, Jun; Cui, Yajing; Chen, Yongliang; Zhao, Yong (2021). "Structural, electrical, and magnetic properties of bulk Nd1–xSrxNiO3 (x=0–0.3)". Solid State Communications. 336: 114420. Bibcode:2021SSCom.33614420Y. doi:10.1016/j.ssc.2021.114420. ISSN 0038-1098.
  6. ^ a b Roy, Subir; Katoch, Rajesh; Gangineni, R.B.; Angappane, S. (2021). "Investigation of metal-insulator transition temperature and magnetic properties of NdNiO3 nanoparticles". Journal of Solid State Chemistry. 294: 121865. Bibcode:2021JSSCh.29421865R. doi:10.1016/j.jssc.2020.121865. ISSN 0022-4596. S2CID 229489271.
  7. ^ a b Lafez, P.; Ruello, P.; Edely, M. (2008). "Electrical and Infrared Properties of RF Sputtering of Rare Earth Nickelate (RNiO3) Thin Films with Metal Insulator-Transitions". In Lamont, Paul W. (ed.). Leading-Edge Materials Science Research. Nova Publishers. pp. 277–310. ISBN 9781600217982. Retrieved 21 April 2016.
  8. ^ Jorgensen, Finn (1996). The Complete Handbook of Magnetic Recording. McGraw-Hill.
  9. ^ Chauveau, F.; Mougin, J.; Bassat, J.M.; Mauvy, F.; Grenier, J.C. (2010). "A new anode material for solid oxide electrolyser: The neodymium nickelate Nd2NiO4+δ". Journal of Power Sources. 195 (3): 744–749. Bibcode:2010JPS...195..744C. doi:10.1016/j.jpowsour.2009.08.003. ISSN 0378-7753.
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