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Sol-gel derived Nd1/3La1/3Ca1/3MnO3: Phase evolution and preparation of films and nanopowders

Published online by Cambridge University Press:  31 January 2011

A. Pohl  and
G. Westin
A. Pohl*
Affiliation:
Department of Materials Chemistry, Ångström Laboratory, 751 21 Uppsala, Sweden
G. Westin
Affiliation:
Department of Materials Chemistry, Ångström Laboratory, 751 21 Uppsala, Sweden
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

An all-alkoxide sol-gel route to the formation of Nd1/3La1/3Ca1/3MnO3thin films and powders has been developed. The microstructural evolution on heat treatment of the gel to yield the perovskite oxide was monitored by means of thermogravimetric analysis-differential scanning calorimetry, powder x-ray diffraction (XRD), Fourier transform infrared spectroscopy, and transmission electron microscopy (TEM)-energy dispersive spectroscopy (EDS). It was found that the amorphous gel consists of hydrated oxo-carbonate without organic residues, and on heating it decomposes in several steps, finally forming single-phase perovskite at 680 °C. Further heating results in only slight changes in the cell parameters and crystal growth. Films were prepared by spin coating, followed by heat treatment in air to a temperature of 800 °C, and studied by scanning electron microscopy, TEM-EDS, and XRD. Films on Al2O3were more porous, while films on Pt–TiO2–SiO2–Si were rather dense and consisted of areas with different crystal orientations.

Keywords

FilmNanostructureSol-gel
Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 6 , June 2007 , pp. 1737 - 1743
Copyright
Copyright © Materials Research Society2007

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References

REFERENCES

1Haghiri-Gosnet, A.M.Renard, J.P.: CMR manganites: Physics, thin films and devices. J. Phys. D: Appl. Phys. 36, R127 2003CrossRefGoogle Scholar
2Prellier, W., Lecoeur, Ph.Mercey, B.: Colossal-magnetoresistive manganite thin films. J. Phys.: Condens. Matter 13, R915 2001Google Scholar
3Lisauskas, A., Khartsev, S.I.Grishin, A. M.: Tailoring the colossal magnetoresistivity: La0.7(Pb0.63Sr0.37)0.3MnO3 thin-film uncooled bolometer, Erratum: “Tailoring the colossal magnetoresistivity: La0.7(Pb0.63Sr0.37)0.3MnO3 thin-film uncooled bolometer” [Appl. Phys. Lett. 77, 756 2000]. Appl. Phys. Lett. 77, 756, 3302 2000Google Scholar
4Kim, J-H., Khartsev, S.I.Grishin, A.M.: Epitaxial colossal magnetoresistive La0.67(Sr,Ca)0.33MnO3films on Si. Appl. Phys. Lett. 82, 4295 2003CrossRefGoogle Scholar
5Hueso, L.E., Rivadulla, F., Sánchez, R.D., Caeiro, D., Jardón, C., Vázquez-Vázquez, C., Rivas, J.López-Quintela, M.A.: Influence of the grain-size and oxygen stoichiometry on magnetic and transport properties of polycrystalline La0.67Ca0.33MnO3±δperovskites. J. Magn. Magn. Mater. 189, 321 1998CrossRefGoogle Scholar
6Zhang, N., Yang, W., Li, G., Ding, W.Xing, D.: Sintering temperature-dependent magnetism and structure in granular perovskites La1− xSrxMnOz.Chem. Phys. Lett. 313, 69 1999Google Scholar
7Peña, A., Gutiérrez, J., Barandiarán, J.M., Pizarro, J.L., Rojo, T., Lezama, L.Insausti, M.: Magnetism in La0.7Pb0.3(Mn0.9TM0.1)O3(TM = Fe, Co, Ni) CMR perovskites. J. Magn. Magn. Mater. 226–230, 831 2001CrossRefGoogle Scholar
8Taguchi, H., Io, M., Yoshinaka, M., Hirota, K.Yamagushi, O.: Low-temperature synthesis of perovskite-type (Nd1−xCax)MnO3(0.0 ⩽x⩽ 0.5) via polymerized complex route. Solid State Ionics 172, 611 2004CrossRefGoogle Scholar
9Chen, W., Nie, L.Y., Zhong, W., Shi, Y.J., Hu, J.J., Li, A.J.Du, Y.W.: Magnetocaloric effect in Nd doped perovskite La0.7−xNdxBa0.3MnO3polycrystalline near room temperature. J. Alloys Compd. 395, 23 2005CrossRefGoogle Scholar
10Vázquez-Vázquez, C., Blanco, M.C., López-Quintela, M.A., Sánchez, R.D., Rivas, J.Oseroff, S.B.: Characterization of La0.67Ca0.33MnO3±δparticles prepared by the sol–gel route. J. Mater. Chem. 8, 991 1998CrossRefGoogle Scholar
11Westin, G.: A study of sol-gel preparation of M-Sb oxides via bimetallic alkoxides or mixed acetate-alkoxide routes. Chem. Commun. 4, 1 1994Google Scholar
12Bae, S-Y.Wang, S.X.: Sol–gel epitaxial growth of La1–xCaxMnO3with colossal magnetoresistance effect. Appl. Phys. Lett. 69, 121 1996CrossRefGoogle Scholar
13Angappane, S., Murugaraj, P., Sethupathi, K., Rangarajan, G., Sastry, V.S., Chakkaravarthi, A. ArulRamasamy, P.: Electrical and magnetoresistivity studies in chemical solution deposited La(1–x)CaxMnO3thin films. J. Appl. Phys. 89, 6979 2001CrossRefGoogle Scholar
14Fors, R., Khartsev, S., Grishin, A., Pohl, A.Westin, G.: Sol–gel derived versus pulsed laser deposited epitaxial La0.67Ca0.33MnO3films: Structure, transport and effects of post-annealing. Thin Solid Films 467(1–2), 112 2004CrossRefGoogle Scholar
15Yang, W-D., Huang, S.H.Chang, Y-H.: Microstructure: Magnetoresistance and electrical properties of La0.67Sr0.33MnO3films synthesized from citric acid and ethylene glycol. Thin Solid Films 478, 42 2005CrossRefGoogle Scholar
16Lenormand, P., Castillo, S., Gonzales, J-R., Laberty-Robert, C.Ansart, F.: Lanthanum ferromanganites thin films by sol–gel process. Influence of the organic/inorganic Rratio on the microstructural properties. Solid State Sci. 7, 159 2005CrossRefGoogle Scholar
17Baszynski, J., Kovac, J.Kowalczyk, A.: Exchange interaction between ferromagnetic and antiferromagnetic phases in La1/3Nd1/3Ca1/3MnO3. J. Magn. Magn. Mater. 195, 93 1999CrossRefGoogle Scholar
18Rao, G.H., Sun, J.R., Liang, J.K.Zhou, W.Y.: Crystal structure and magnetoresistance of La(2−x)/3Ndx/3Ca1/3MnO3: Local lattice distortion effect. Phys. Rev. B: Condens. Matter 55(6), 3742 1997CrossRefGoogle Scholar
19Pohl, A., Westin, G.Jansson, K.: Preparation of La0.67Ca0.33MnO3nanophase powders and films from alkoxide precursors. Chem. Mater. 14, 1981 2002CrossRefGoogle Scholar
20Pohl, A., Westin, G.Jansson, K.: Preparation of La0.75Sr0.25MnO3nano-phase powders and films from alkoxide precursors. J. Sol.-Gel Sci. Technol. 26, 257 2003CrossRefGoogle Scholar
21Faaland, S., Knudsen, K.D., Einarsrud, M-A., Römark, L., Höjer, R.Grande, T.: Structure: Stoichiometry, and phase purity of calcium substituted lanthanum manganite powders. J. Solid State Chem. 140, 320 1998CrossRefGoogle Scholar