Ahmad, Tokeer ; Ramanujachary, Kandalam V. ; Lofland, Samuel E. ; Ganguli, Ashok K. (2006) Reverse micellar synthesis and properties of nanocrystalline GMR materials (LaMnO3, La0·67Sr0·33MnO3 and La0·67Ca0·33MnO3): ramifications of size considerations Journal of Chemical Sciences, 118 (6). pp. 513-518. ISSN 0377-8444
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Official URL: http://www.ias.ac.in/chemsci/Pdf-Nov2006/513.pdf
Related URL: http://dx.doi.org/10.1007/BF02703948
Abstract
Nanoparticles of complex manganites (viz. LaMnO3, La0·67Sr0·33MnO3 and La0·67Ca0·33MnO3) have been synthesized using the reverse micellar route. These manganites are prepared at 800≠C and the monophasic nature of all the oxides has been established by powder X-ray diffraction studies. TEM studies show an average grain size of 68, 80 and 50 nm for LaMnO3, La0·67Sr0·33MnO3 and La0·67Ca0·33MnO3respectively. Ferromagnetic ordering is observed at around 250 K for LaMnO3, 350 K for La0·67Sr0·33MnO3 and 200 K for La0·67Ca0·33MnO3. These Curie temperatures correspond well with those reported for bulk materials with similar composition.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Indian Academy of Sciences. |
| Keywords: | Reverse Micellar Synthesis; Nanomaterials; Magnetism; Rare-earth Manganites |
| ID Code: | 62046 |
| Deposited On: | 16 Sep 2011 03:54 |
| Last Modified: | 18 May 2016 11:29 |
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