Preparation of La2-x Sr x NiO4 (x = 0-1.3) conducting oxides via a citrate route
Source abstract
Abstract
La2-x SrxNiO4 (x = 0-1.3) oxide materials were prepared by the citrate and ceramic routes. The citrate precursors and final products were characterized by thermal analysis (DTA + TG), x-ray diffraction, scanning electron microscopy, IR spectroscopy, and specific surface and conductivity measurements. The use of citrate mixtures leads to the formation of amorphous precursors to La2O3, NiO, and La2-xSrxNiO4 (x <-0.4); reduces the temperature required for obtaining solid solutions by 150–200‡C as compared to the ceramic route; and enables the preparation of fine powders (≤5 Μm) and dense ceramics.
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Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Microwave Dielectric Ceramics Synthesis · Magnetic and transport properties of perovskites and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (12)
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1. Lazarev, V.B., Krasov, V.G., and Shaplygin, I.S.,Elektroprovodnost’ okisnykh sistem i plenochnykh Struktur (Electrical Conductivity of Oxide Systems and Film Structures), Moscow: Nauka, 1978.
2. Vysokotemperaturnye oksidnye provodniki dlya elektrokhimicheskikh ustroistv (High-Temperature Electronic Oxide Conductors for Electrochemical Applications), Pal’guev, S.F., Gil’derman, V.K., and Zemtsov, V.I., Eds., Moscow: Nauka, 1990.
3. Kakol, Z., Spatek, J., and Honig, J.M., Superconductivity and Antiferromagnetism in La2-xSrxNiO4,J. Solid State Chem., 1989, vol. 79, no. 2, pp. 288–292.10.1016/0022-4596(89)90277-6 ↗
4. Ivanov, V.A., High-Temperature Superconductivity in La2−x SrxNiO4,Zh. Neorg. Khim., 1989, vol. 34, no. 12, pp. 3201–3203.
5. Kononyuk, I.F., Surmach, N.G., and Makhnach, L.V., Preparation and Electrical Properties of La2-xSrxNiO4 (x = 0-1.0),Izv. Akad. Nauk SSSR, Neorg. Mater., 1982, vol. 18, no. 7, pp. 1222–1225.
6. Takeda, Y., Kanno, R., Sakano, M., and Yamamoto, O., Crystal Chemistry and Physical Properties of La2-xSrxNiO4 (0≤x ≤1.6),Mater. Res. BulI., 1990, vol. 25, no. 3, pp. 293–306.10.1016/0025-5408(90)90100-G ↗
7. Makhnach, L.V., Tolochko, S.P., Kononyuk, LE,et al., Nonstoichiometry and Electrical Properties of La1-xSr1+xNiO4±Σ (0 ≤x ≤1) Solid Solutions,Neorg. Mater, 1993, vol. 29, no. 12, pp. 1678–1682 [Inorg. Mater. (Engl. Transi.), vol. 29, no. 12, pp. 1509–1513].
8. Anderton, D.J. and Sale, F.R., Production of Conducting Oxide Powders by Amorphous Citrate Process,Powder Metall., 1979, no. 1, pp. 14–21.10.1179/pom.1979.22.1.14 ↗
9. Tolochko, S.P., Kononyuk, I.F., Lyutsko, V.A.,et al., Comparison Study of the Thermal Decomposition of Y, Ba, and Cu Citrates and Coprecipitated Carbonates,Zh. Neorg. Khim., 1991, vol. 36, no. 2, pp. 492–497.
10. Soedineniya redkozemel’nykh elementov. Karbonaty, oksalaty, nitraty, titanaty (Compounds of Rare-Earth Elements: Carbonates, Oxalates, Nitrates, and Titanates), Komissarova, L.N.et al., Eds., Moscow: Nauka, 1984.
11. Khimicheskaya entsiklopediya (Chemical Encyclopedia), Zefirov, N.S.et al., Eds., Moscow: Bol’shaya Rossiiskaya Entsiklopediya, 1995, vol. 4, p. 443.
12. Singh, K.K. and Ganguly, P., Infrared Spectra of Some Oxides of K2NiF4 and Related Structures,Spectrochim. Acta, Part A, 1984, vol. 40, no. 6, pp. 539–545.10.1016/0584-8539(84)80085-9 ↗