Debye temperature variations in alkali-halide single crystals as a function of their chemical compositions

Structural stability, optical and thermoelectric properties of the layered RbSn2Br5 halide synthesized using mechanochemistry

“…It leads to an average Debye temperature of 110.9 K, which is a value ranging within that already reported for Rb- and Br-based halides. 49,50 The bonding stiffness evaluation for Rb–Br and Sn–Br can be conducted by the harmonic one-particle potential model (h-OPP), 51,52 where a force constant is defined from θ D and atomic mass:here, K D is the force constant in units of eV Å −2 . The as-obtained K D values are the next ones: 0.55 eV Å −2 for Rb, 0.59 eV Å −2 for Sn, 0.82 eV Å −2 for Br1, and 0.70 eV Å −2 for Br2.…”

“…It leads to an average Debye temperature of 110.9 K, which is a value ranging within that already reported for Rb-and Br-based halides. 49,50 The bonding stiffness evaluation for Rb-Br and Sn-Br can be conducted by the harmonic one-particle potential model (h-OPP), 51,52 where a force constant is defined from θ D and atomic mass:…”

Channeling in direct dark matter detection I: channeling fraction in NaI (Tl) crystals

“…produces an error of less than 10% in the actual vibration amplitudes at T > Θ [36]. For NaI, we take the Debye temperature to be Θ = 165 K [7,37] (although it changes with T between 169 K at a few K and 155 K at 300 K [38]). The crystals in the DAMA experiment are at 20 • C, i.e.…”