Mechanically activated low temperature synthesis of Sr doped lanthanum manganite

被引:11
|
作者
Padella, F [1 ]
Incocciati, E [1 ]
Nannetti, CA [1 ]
Colella, C [1 ]
Casadio, S [1 ]
Magini, M [1 ]
机构
[1] CR Casaccia, ENEA, MATAV, NUMA,INN, I-00060 Rome, Italy
来源
MECHANICALLY ALLOYED, METASTABLE AND NANOCRYSTALLINE MATERIALS, PART 1 | 1998年 / 269-2卷
关键词
mechanosynthesis; ball milling; perovskite oxides; solid state reactions;
D O I
10.4028/www.scientific.net/MSF.269-272.105
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Alkaline earth doped lanthanum manganites (La1-x M-x Mn O3+delta, with M=Ca, Sr, Ba ...) are attracting materials because of their peculiar properties displayed in giant magnetoresistance and electrocatalytic activity. Classical synthesis routes of the material make use of solid state reaction, among suitable precursors, at temperatures generally above 900 - 950 degrees C. However such temperatures promote morphological and microstructural characteristics, such as low surface area and large particle size, lowering the catalytic activity. Mechanosynthesis technique has been therefore attempted on a mixture of La2O3, MnO2 and SrCO3 in order to verify the possibility of obtaining La0.7Sr0.3MnO3 with high specific area and small grain size. LaMnO3 has been also synthesized in the same way for comparison. The behavior of the mixtures has been monitored by x-ray diffraction. Thermogravimetry (TG) and differential thermal analysis (DTA) have been used to follow the thermal behavior compared to that of simply blended mixture. TG and DTA thermograms indicate that the synthesis of manganite, already present in the milled samples, is completed at temperatures much lower (650 - 700 degrees C) than those of conventional routes. Preliminary measurements of specific surface area confirm that mechanically activated synthesis of lanthanum manganite is able to produce powders having higher surface area and smaller particle size than those obtained by conventional solid state reactions.
引用
收藏
页码:105 / 110
页数:6
相关论文
共 50 条
  • [31] Chemical interactions between 3 mol% yttria-zirconia and Sr-doped lanthanum manganite
    Jiang, SP
    Zhang, JP
    Föger, K
    JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2003, 23 (11) : 1865 - 1873
  • [32] Determination of the ionic conductivity of Sr-doped lanthanum manganite by modified Hebb-Wagner technique
    Miruszewski, T.
    Karczewski, J.
    Bochentyn, B.
    Jasinski, P.
    Gazda, M.
    Kusz, B.
    JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2016, 91 : 163 - 169
  • [33] Synthesis, microstructure, the complex nature of the magnetic state of lanthanum manganite weakly doped by bismuth
    Tarasenko T.N.
    Kravchenko Z.F.
    Burkhovetskyi V.V.
    Mazur A.S.
    Kamenev V.I.
    Linnik A.I.
    Bulletin of the Russian Academy of Sciences: Physics, 2017, 81 (3) : 315 - 319
  • [34] Temperature dependence of magnetoresistance in lanthanum manganite ceramics
    Gubkin, MK
    Zalesskii, AV
    Perekalina, TM
    KRISTALLOGRAFIYA, 1996, 41 (05): : 887 - 890
  • [35] Hydrothermal Synthesis of Strontium Doped Lanthanum Manganite Nanoparticles by a Supercritical Flow Reaction System
    Islam, Nazrul M.
    Noguchi, Takio
    Hakuta, Yukiya
    Hayashi, Hiromichi
    NANOSCIENCE AND NANOTECHNOLOGY LETTERS, 2011, 3 (03) : 324 - 327
  • [36] Strontium-doped Lanthanum Manganite Synthesis for Solid Oxide Fuel Cells Cathode
    Cela, B.
    de Macedo, D. A.
    de Souza, G. L.
    do Nascimento, R. M.
    Martinelli, A. E.
    Paskocimas, C. A.
    JOURNAL OF NEW MATERIALS FOR ELECTROCHEMICAL SYSTEMS, 2009, 12 (2-3) : 109 - 113
  • [37] Mechanical properties of strontium-doped lanthanum manganite
    D'Souza, CM
    Sammes, NM
    JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2000, 83 (01) : 47 - 52
  • [38] Low-temperature synthesis methods of doped apatite-type lanthanum silicates
    Boreskov Institute of Catalysis, SB, RAS, pr. Lavrentieva, 5, 630090 Novosibirsk, Russia
    不详
    不详
    J. Chem. Eng. Jpn., 13 (1187-1191):
  • [39] Low-Temperature Synthesis Methods of Doped Apatite-Type Lanthanum Silicates
    Kharlamova, Tamara
    Pavlova, Svetlana
    Sadykov, Vladislav
    Lapina, Olga
    Khabibulin, Dzhalil
    Krieger, Tamara
    Zaikovskii, Vladimir
    Isfichenko, Arcady
    Chaikina, Marina
    Argirusis, Christos
    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 2007, 40 (13) : 1187 - 1191
  • [40] Synthesis and characterization of sodium substituted lanthanum manganite
    Sharma, M. P.
    Jain, S. K.
    Krishnamurthy, Anjali
    Srivastava, Bipin K.
    INDIAN JOURNAL OF PURE & APPLIED PHYSICS, 2008, 46 (05) : 325 - 329