While most solids expand when heated, some materials show the opposite behavior:
negative thermal expansion (NTE). In polymers and biomolecules, NTE originates from the …

We characterize perovskite TiF 3, a material which is reported to display significant negative
thermal expansion at elevated temperatures above its cubic-to-rhombohedral structural …

Optical coatings are thin layers of materials applied to optical components in order to modify
the transmission, reflection, or polarization properties of light. The common materials used …

Advances on understanding the nature of the chemical bonding and electron correlation
effects during the X-ray absorption process in ionic–covalent metal complexes has been …

Searching negative thermal expansion (NTE) materials is challenging. Herein, hexagonal
VF 3 is predicted as a new NTE material for the first time. VF 3 displays NTE property in the …

Floppy networks (FNs) provide valuable insight into the origin of anomalous mechanical and
thermal properties in soft matter systems, from polymers, rubber, and biomolecules to …

Metal fluorides are ionic compounds with intriguing properties and a wide range of industrial
and technological applications. In this paper, we present the results of an extensive first …

The structural phase transitions of MF 3 (M= Al, Cr, V, Fe, Ti, Sc) metal trifluorides are
studied within a simple Landau theory consisting of tilts of rigid MF 6 octahedra associated …

The crystal lattice of cubic scandium fluorine (ScF 3) exhibits negative thermal expansion
(NTE) over a wide range of temperatures from 10 K to 1100 K. Here the NTE effect in ScF 3 …

Photoluminescence and excitation spectra of ScF 3 single crystals have been measured
under vacuum ultraviolet excitations utilizing undulator synchrotron radiation from 1.5 GeV …