TY - JOUR
T1 - High pressure Raman study of DyPO4 at room and low temperatures
AU - Kontos, A. G.
AU - Stavrou, E.
AU - Malamos, V.
AU - Raptis, Y. S.
AU - Raptis, C.
PY - 2007/1
Y1 - 2007/1
N2 - The Raman spectra of DyPO4, under variable hydrostatic pressure at room- and low-temperature (110 K), have been studied. Crossing, with increasing pressure, of two modes in the frequency range of the internal-external border, is observed and discussed. At low temperature, the pressure dependence of the three highest-frequency internal modes is monitored, which exhibit a (dω/dP)-slope differing, well beyond the experimental error, from the corresponding room temperature slopes. At room temperature, all the expected modes are observed and are divided in two distinct groups on a "logarithmic derivative" vs. "peak-frequency" graph. This division is discussed in terms of the internal-external mode-character.
AB - The Raman spectra of DyPO4, under variable hydrostatic pressure at room- and low-temperature (110 K), have been studied. Crossing, with increasing pressure, of two modes in the frequency range of the internal-external border, is observed and discussed. At low temperature, the pressure dependence of the three highest-frequency internal modes is monitored, which exhibit a (dω/dP)-slope differing, well beyond the experimental error, from the corresponding room temperature slopes. At room temperature, all the expected modes are observed and are divided in two distinct groups on a "logarithmic derivative" vs. "peak-frequency" graph. This division is discussed in terms of the internal-external mode-character.
UR - http://www.scopus.com/inward/record.url?scp=33847008687&partnerID=8YFLogxK
U2 - 10.1002/pssb.200672521
DO - 10.1002/pssb.200672521
M3 - 文章
AN - SCOPUS:33847008687
SN - 0370-1972
VL - 244
SP - 386
EP - 391
JO - Physica Status Solidi (B): Basic Research
JF - Physica Status Solidi (B): Basic Research
IS - 1
ER -