Magnetic ordering effects in the Raman spectra ofLa1−xMn1−xO3
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چکیده
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Charge ordering phase transition and order - disorder effects in the Raman spectra of NaV
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In the ac polarized Raman spectra of NaV 2 O 5 we have found anomalous phonon broadening, and an energy shift of the low-frequency mode as a function of the temperature. These effects are related to the breaking of translational symmetry, caused by electrical disorder that originates from the fluctuating nature of the V 4.5+ valence state of vanadium. The structural correlation length, obtained...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1999
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.60.11879