PHYS07200604007 Manas Kumar Dala - Homi Bhabha National ...
PHYS07200604007 Manas Kumar Dala - Homi Bhabha National ...
PHYS07200604007 Manas Kumar Dala - Homi Bhabha National ...
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Electronic Structure of Pr 0.67 Ca 0.33 MnO 3 65<br />
0.014<br />
(a)<br />
0.012<br />
Normalized Intensity<br />
0.01<br />
0.6<br />
0.55<br />
0.5<br />
0.45<br />
(b)<br />
(c)<br />
0.4<br />
100 150 200 250 300<br />
Temperature (K)<br />
Figure 3.3: Temperature dependence of the area of the three valence band features<br />
obtained from fitting the spectra with Lorentzian line shapes using a χ 2 iterative<br />
program. We have used an integral background, which was kept the same for all the<br />
spectra. The energy positions and FWHMs were determined by finding the best fit<br />
common to all the spectra by the iterative program. The final fit for all spectra at<br />
different temperatures were obtained with the same energy positions and FWHMs.<br />
(a), (b), and (c) correspond to the features A, B, and C positioned at -1.19, -3.49,<br />
and -5.63 eV with FWHMs 2.56, 1.93, and 1.37 eV respectively.