Magnetic and nuclear structure of goethite (α-FeOOH): a neutron diffraction study

A neutron diffraction study of the nuclear and magnetic structure of goethite (-FeOOH) with varying crystallinity and temperature is presented. The antiferromagnetic structure in the Pb′nm color space group suggests spins aligned parallel to the c axis. A significant reduction in the Néel temperature was found for a nanocrystalline sample.

A six-axis robotic sample changer for high-throughput neutron powder diffraction and texture measurements

A new six-axis robotic sample changer for neutron powder diffraction experiments, including texture measurements, has enabled a novel set of experiments to be performed at the High-Pressure Preferred Orientation diffractometer at the Lujan Neutron Scattering Center.