TY  - JOUR
AU  - Dan, Tinku
AU  - Mohanty, Ashutosh
AU  - Dutta, Anirban
AU  - Varma, Rahul Mahavir
AU  - Sarkar, Sagar
AU  - Di Marco, Igor
AU  - Eriksson, Olle
AU  - Welter, Edmund
AU  - Pollastri, Simone
AU  - Olivi, Luca
AU  - Priolkar, K. R.
AU  - Sarma, D. D.
TI  - Local structural evolution in the anionic solid solution ZnSe<sub>x</sub>S<sub>1−x</sub>
JO  - Physical review / B
VL  - 104
IS  - 18
SN  - 1098-0121
CY  - Woodbury, NY
PB  - Inst.
M1  - PUBDB-2022-00421
SP  - 184113
PY  - 2021
AB  - The century-old Vegard‘s law has been remarkably accurate in describing the evolution of the lattice parameters of almost all solid solutions. Contractions or expansions of lattice parameters of such systems depend on the size of the guest atom being smaller or larger than the host atom it replaces to form the solid solution. This has given rise to the concept of “chemical pressure” in analogy to the physical pressure. We have investigated using EXAFS the evolution of the local structure in terms of atom-pair distances extending up to the third-nearest neighbors in the family of compounds, ZnSe<sub>x</sub>S<sub>1−x</sub> as an example of an anionic solid solution, in contrast to all previous studies focusing on cationic solid solutions. Our results establish several common features between these two types of solid solutions, while strongly suggesting that the concept of a chemical pressure is inaccurate and misleading. Most interestingly, we also find a qualitative difference between the cationic solid solutions, reported earlier, and the anionic solid solution.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000721366800004
DO  - DOI:10.1103/PhysRevB.104.184113
UR  - https://bib-pubdb1.desy.de/record/474003
ER  -