ISSN:
0377-0486
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Results of a high-temperature Raman spectroscopic investigation up to 522 K carried out at ambient pressure on an antiferroelectric PbHfO3 multi-domain single crystal are reported. The changes in the Raman spectral features show that temperature-induced phase transitions occur at 435 ± 1 and at 484 ± 1 K. The first transition is possibly to a tetragonal structure and the second is to the cubic perovskite phase. The behavior is consistent with the earlier x-ray study of PbHfO3. No soft mode behavior associated with the transitions was detected in the Raman spectra of PbHfO3. The changes observed in the high-temperature Raman spectra of PbHfO3 are similar to those found in the spectra of isostructural PbZrO3.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jrs.1250250508
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