Bilbao Crystallographic Server : Useful Databases and Tools for Phase-Transition Studies

Structural and magnetic properties of isovalently substituted multiferroic BiFeO3: Insights from Raman spectroscopy

“…All Raman selection rules presented herein were obtained from the Wyckoff positions in the respective space groups by the SAM tool on the Bilbao Crystallographic Server. 39 Magnetization versus field and temperature measurements were performed using two Quantum Design systems, a MPMS-XL and a PPMS system. Magnetization (M) vs field (H ) measurements were performed at 10 and 300 K between ±50 kOe (MPMS-XL) and/or between ±90 kOe (PPMS).…”

Laser Raman spectroscopy as a technique for identification of seafloor hydrothermal and cold seep minerals

“…A number of bands were observed in pyrrhotite spectra obtained in this study. However, based on theoretical derivations (Kroumova et al, 2003;Mernagh and Trudu, 1993), none of the vibrational modes of either form of pyrrhotite are Raman active. Some of the bands observed appear to be due to sulfur and sulfate impurities; the remaining bands are likely the result of narrow band fluorescence and are highly variable.…”

High-pressure Raman scattering study of defect chalcopyrite and defect stannite ZnGa2Se4

“…According to group theory, 45 5 E), where B 2 and E are polar modes, E modes are doubly degenerate, and one A 2 mode is silent. Additionally, two modes should be observed for each B and E (B 2 and E modes) in the DC (DS) structure, due to the TO-LO splitting of the polar modes.…”