% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@ARTICLE{Farla:616759,
author = {Farla, Robert and Neri, Adrien and Poeppelbaum, Melanie and
Glazyrin, Konstantin},
title = {{T}hermal {E}quations of {S}tate of {B}2-structured
{R}ubidium {H}alides {R}b{C}l, {R}b{B}r and {R}b{I}},
journal = {Journal of applied physics},
volume = {137},
number = {11},
issn = {0021-8979},
address = {Melville, NY},
publisher = {American Inst. of Physics},
reportid = {PUBDB-2024-06513},
pages = {115901},
year = {2025},
note = {The beamline LVP instrument Aster-15 is funded by the
ErUM-Pro program (Grant Nos. 05K16WC2 and 05K13WC2) of the
German Federal Ministry of Education and Research (BMBF)},
abstract = {In this study, we determined the thermal equations of state
(EoS) for rubidium chloride (RbCl), rubidium bromide (RbBr),
and rubidium iodide (RbI) in the B2 (CsCl-type) structure.
We conducted in situ energy-dispersive X-ray diffraction
measurements at high pressures (up to 26 GPa) and
temperatures (up to 1800 K) using a Large Volume Press
(LVP). Pressures were calibrated using CsCl, Mo, and Pt in
the same cell assemblies. For each B2-structured Rb halide,
the parameter V$_0$ (unit cell volume at room pressure) was
estimated from additional diamond anvil cell (DAC)
experiments at 300 K. Using the third-order Birch-Murnaghan
equation and the Mie-Grüneisen-Debye thermal model, we
derived the thermoelastic parameters for each phase: RbCl:
K0 = 19.89(8) GPa, K$_0$’ = 5.00(2), γ$_0$ = 1.96(4), q =
1.05(9), RbBr: K$_0$ = 16.28(4) GPa, K$_0$’ = 5.28(2),
γ$_0$ = 2.18(14), q = 1.52(24), RbI: K$_0$ = 13.69(4) GPa,
K$_0$’ = 4.95(1), γ$_0$ = 2.21(7), q = 1.42(10). These
parameters represent the isothermal bulk modulus (K$_0$),
its pressure derivative (K$_0$’), the Grüneisen parameter
(γ$_0$) and the logarithmic volume dependence of the
Grüneisen parameter (q). The newly derived EoS for rubidium
halides provide effective pressure markers above 0.5 GPa, as
they remain stable across wide pressure and temperature
ranges. Additionally, RbCl and RbBr offer improved X-ray
transmission compared to CsCl. These EoS can be combined
with a secondary metallic phase to estimate pressure and
temperature in the absence of a thermocouple, taking
advantage of the large differences in thermal expansion
between halides and metals.},
cin = {FS-PETRA-D / FS DOOR-User},
ddc = {530},
cid = {I:(DE-H253)FS-PETRA-D-20210408 /
$I:(DE-H253)FS_DOOR-User-20241023$},
pnm = {631 - Matter – Dynamics, Mechanisms and Control
(POF4-631) / 6G3 - PETRA III (DESY) (POF4-6G3) /
FS-Proposal: I-20220794 (I-20220794)},
pid = {G:(DE-HGF)POF4-631 / G:(DE-HGF)POF4-6G3 /
G:(DE-H253)I-20220794},
experiment = {EXP:(DE-H253)P-P61.2-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001447588200015},
doi = {10.1063/5.0248905},
url = {https://bib-pubdb1.desy.de/record/616759},
}