Journal of Thermal Analysis and Calorimetry

, Volume 64, Issue 3, pp 1001–1010 | Cite as

Phase Formation Study of The Substituted Lanthanum Manganites Solid Solutions

  • A. Ianculescu
  • A. Braileanu
  • M. Zaharescu
  • I. Pasuk
  • E. Chirtop
  • C. Popescu
  • E. Segal


It is well known that the manganites-based solid solutions are interesting for their electric and magnetic properties. LaMnO3 exhibits a distorted perovskite structure due to Mn3+ ion, which determines the presence of the Jahn–Teller effect. Replacing La3+ host ions by cations of lower valence leads to the disappearance of this effect and changes the characteristics of these materials.

Although the formation of manganites-based solid solutions has been intensively studied, there are some unelucidated aspects concerning their formation mechanism, depending both on the precursors used and on the thermal treatment applied in order to obtain suitable properties.

In this work the formation mechanism of La0.7M0.3MnO3 (M=Ca, Sr, Ca+Sr in equimolecular mixture) solid solutions, in isothermal and non-isothermal conditions, was studied. For this purpose XRD, DTA/TG and spectral techniques were used. The solid solutions formation was found to be more dependent on the Mn-precursors type than the thermal treatment conditions.

manganite perovskite solid solution thermal analysis XRD 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    N. Q. Minh, J. Am. Ceram. Soc., 76 (1993) 563.CrossRefGoogle Scholar
  2. 2.
    T. Yao, T. Ito and T. Kokubo, J. Mater. Res., 10 (1995) 1079.Google Scholar
  3. 3.
    J. A. M. van Roosmalen, P. van Vlaanderen and E. H. P. Cordfunke, J. Solid State Chem., 114 (1995) 516.CrossRefGoogle Scholar
  4. 4.
    R. Mahendiran, S. K. Tiwary, A.K. Raychaudhuri, T. V. Ramakrishnan, R. Mahesh, N. Rangavittal and C.N.R. Rao, Phys. Rev. B, 53 (1996) 3348.CrossRefGoogle Scholar
  5. 5.
    M. Hervieu, R. Mahesh, N. Rangavittal and C. N. R. Rao, Eur. J. Solid State Inorg. Chem., 32 (1995) 79.Google Scholar
  6. 6.
    S. Bilger, E. Syskakis, A. Naoumidis and H. Nickel, J. Am., Ceram. Soc., 75 (1992) 964.CrossRefGoogle Scholar
  7. 7.
    I. Maurin, P. Barboux, Y. Lassailly, J. P. Boilot and F. Villain, J. Magnetism and Magn. Mat., 211 (2000) 139.CrossRefGoogle Scholar
  8. 8.
    P. Schiffer, A. P. Ramirez, W. Bao and S.-W. Cheong, Phys. Rev. Lett., 75 (1995) 3336.CrossRefGoogle Scholar
  9. 9.
    A. Urushibara, Y. Moritomo, T. Arima, A. Asamitsu, G. Kido and Y. Tokura, Phys. Rev. B, 51 (1995) 14103.CrossRefGoogle Scholar
  10. 10.
    C. Roy and R.C. Budhani, J. Appl. Phys., 85 (1999) 3124.CrossRefGoogle Scholar

Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  • A. Ianculescu
    • 1
  • A. Braileanu
    • 1
  • M. Zaharescu
    • 1
  • I. Pasuk
    • 2
  • E. Chirtop
    • 3
  • C. Popescu
    • 4
  • E. Segal
    • 5
  1. 1.Institute of Physical ChemistryBucharestRomania
  2. 2.SC ICPE SA.BucharestRomania
  3. 3.SC MATPUR SA.BucharestRomania
  4. 4.LACECA Research CentreBucharestRomania
  5. 5.Faculty of Chemistry, Department of Physical ChemistryUniversity of BucharestBucharestRomania

Personalised recommendations