1Department of Physics, National Institute of Technology Hazratbal Srinagar, J & K 190006, India
2Department of Chemistry, National Institute of Technology Hazratbal Srinagar, J & K 190006, India
3Materials Science Division, Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India
Adv. Mater. Lett., 2014, 5 (1), pp 09-13
Publication Date (Web): Dec 28, 2013
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Temperature-dependent Raman spectroscopy of polycrystalline bulk samples of La1−xCaxMnO3 (x = 0.0, and 0.3) synthesized by solid-state reaction method is presented. As the temperature is decreased, there is significant change in intensity and full-width half maxima of all major Raman modes. This implies a structural rearrangement resulting in change of space group. This study brings out the variations in Raman spectra with temperature and also the effect of Ca doping on A-site in the compound LaMnO3. Possible effect of Laser heating on the samples has also been discussed.
Solid state reaction, raman modes, orthorhombic.