More Like this

1. Thermal and Electronic Properties of Ba ₂ MnSe ₃

   https://doi.org/10.1021/acs.inorgchem.2c04048  

   Ojo, Oluwagbemiga P.; Gunatilleke, Wilarachchige D.; Biacchi, Adam J.; Wang, Hsin; Nolas, George S. (February 2023, Inorganic Chemistry)
2. Surface and dynamical properties of GeI ₂

   https://doi.org/10.1088/2053-1583/ac4715  

   Dhingra, Archit; Lipatov, Alexey; Lu, Haidong; Chagoya, Katerina; Dalton, Joseph; Gruverman, Alexei; Sinitskii, Alexander; Blair, Richard G; Dowben, Peter A (January 2022, 2D Materials)

   Abstract GeI 2 is an interesting two-dimensional wide-band gap semiconductor because of diminished edge scattering due to an absence of dangling bonds. Angle-resolved x-ray photoemission spectroscopy indicates a germanium rich surface, and a surface to bulk core-level shift of 1.8 eV in binding energy, between the surface and bulk components of the Ge 2p 3/2 core-level, making clear that the surface is different from the bulk. Temperature dependent studies indicate an effective Debye temperature ( θ D ) of 186 ± 18 K for the germanium x-ray photoemission spectroscopy feature associated with the surface. These measurements also suggest an unusually high effective Debye temperature for iodine (587 ± 31 K), implying that iodine is present in the bulk of the material, and not the surface. From optical absorbance, GeI 2 is seen to have an indirect (direct) optical band gap of 2.60 (2.8) ± 0.02 (0.1) eV, consistent with the expectations. Temperature dependent magnetometry indicates that GeI 2 is moment paramagnetic at low temperatures (close to 4 K) and shows a diminishing saturation moment at high temperatures (close to 300 K and above). 

   more » « less
3. Structural and thermal properties of Eu ₂ Ga ₁₁ Sn ₃₅

   https://doi.org/10.1063/5.0119852  

   Gunatilleke, Wilarachchige D.; Zhang, Mingjian; Wong-Ng, Winnie; Zavalij, Peter; Chen, Yu-Sheng; Nolas, George S. (March 2023, Journal of Applied Physics)

   Clathrates have been reported to form in a variety of different structure types; however, inorganic clathrate-I materials with a low-cation concentration have yet to be investigated. Furthermore, tin-based compositions have been much less investigated as compared to silicon or germanium analogs. We report the temperature-dependent structural and thermal properties of single-crystal Eu 2 Ga 11 Sn 35 revealing the effect of structure and composition on the thermal properties of this low-cation clathrate-I material. Specifically, low-temperature heat capacity, thermal conductivity, and synchrotron single-crystal x-ray diffraction reveal a departure from Debye-like behavior, a glass-like phonon mean-free path for this crystalline material, and a relatively large Grüneisen parameter due to the dominance of low-frequency Einstein modes. Our analyses indicate thermal properties that are a direct result of the structure and composition of this clathrate-I material. 

   more » « less
4. Structural and energetic properties of RMX ₃ ‐NH ₃ complexes

   https://doi.org/10.1002/qua.26383  

   Phillips, James A.; Ley, Anna R.; Treacy, Patrick W.; Wahl, Benjamin M.; Zehner, Brittany C.; Donald, Kelling J.; Gillespie, Samuel (October 2020, International Journal of Quantum Chemistry)

   null (Ed.)
5. Structural and magnetodielectric properties of BiFeO ₃ -GdMnO ₃ multiferroics

   https://doi.org/10.1088/2053-1591/abdd50  

   Masso, R; Tripathy, S N; Aponte, F A; Pradhan, D K; Martinez, R; Palai, R (January 2021, Materials Research Express)

   null (Ed.)