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High temperature emissivity, reflectivity, and x-ray absorption of BiFeO3
(American Institute of Physics, 2010-05)
We report on the lattice evolution of BiFeO3 as function of temperature using far infrared emissivity, reflectivity, and x-ray absorption local structure. A power law fit to the lowest frequency soft phonon in the magnetic ...
High temperature far-infrared dynamics of orthorhombic NdMnO3: emissivity and reflectivity
(IOP Publishing, 2013-05-16)
We report on near normal far- and mid-infrared emission and reflectivity of NdMnO3 perovskite from room temperature to sample decomposition above 1800 K. At 300 K the number of infrared active phonons is in close agreement ...
Phonons and hybrid modes in the high and low temperature far infrared dynamics of hexagonal TmMnO3
(IOP Publishing, 2014-06)
We report on temperature dependent TmMnO3 far infrared emissivity and reflectivity spectra from 1910K to 4K. At the highest temperature the number of infrared bands is lower than that predicted for centrosymmetric P63/mmc ...
Paramagnetic collective electronic mode and low temperature hybrid modes in the far infrared dynamics of orthorhombic NdMnO3
(IOP Publishing, 2013-08)
We report on the far- and mid-infrared reflectivity of NdMnO3 from 4 to 300 K. Two main features are distinguished in the infrared spectra: active phonons in agreement with expectations for the orthorhombic ${\mathrm{D}} ...
Micro Far-Infrared Reflectivity of CaNb(2)O(6) Single Crystal Fibers Grown by the Laser-Heated Pedestal Growth Technique
(AMER CHEMICAL SOC, 2011)
CaNb(2)O(6) single crystal fibers were grown by the laser-heated pedestal growth technique, directly from the starting reagents. Optically transparent fibers were obtained in the form of rods with elliptical cross-section, ...