Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
High pressure behavior of K-cymrite (KAlSi3O8·H2O) crystal structure. / Romanenko, Alexandr V.; Rashchenko, Sergey V.; Korsakov, Andrey V. и др.
в: Physics and Chemistry of Minerals, Том 51, № 3, 30.08.2024.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - High pressure behavior of K-cymrite (KAlSi3O8·H2O) crystal structure
AU - Romanenko, Alexandr V.
AU - Rashchenko, Sergey V.
AU - Korsakov, Andrey V.
AU - Sokol, Alexander G.
N1 - We want to thanks Konstantin V. Glazyrin invaluable help in conducting the experiment. We acknowledge DESY (Hamburg, Germany), a member of the Helmholtz Association HGF, for the provision of experimental facilities. Parts of this research were carried out at PETRA III, \u042002.2 Extreme conditions beamline, proposal #I-20211603. This study is supported by the Russian Science Foundation (project 18-17-00186). A part of the work related to the study of behavior of incommensurate modulation was carried out with the support Russian Science Foundation (project 23-77-10047). A.G. Sokol work on K-cymrite synthesis was supported by the Russian Science Foundation (project 22-17-00005) and by state assignment of IGM SB RAS.
PY - 2024/8/30
Y1 - 2024/8/30
N2 - Compressibility and structural evolution of K-cymrite, hexagonal high-pressure KAlSi3O8·H2O, has been studied up to 18 GPa using synchrotron single crystal X-ray diffraction in Ne pressure medium. K-cymrite retains its original symmetry P6/mmm up to a pressure of 7.3 GPa. As the pressure increases from 7.3 to 8.5 GPa, the weak satellite reflections appear on diffraction patterns and remain up to maximum applied pressure of 18 GPa indicating incommensurate modulation. However, main reflections can be still indexed in hexagonal cell and structure successfully solved in initial P6/mmm group. After pressure release, K-cymrite reverts to initial non-modulated single-crystal state. The parameters of third-order Birch-Murnaghan equation of state for K-cymrite are V0 = 190.45(12) ų, K0 = 56.5(7) GPa and K0’ = 3.2(12), with bulk modulus notably deviating from earlier result (K0 = 45(2) GPa and K0’ = 1.3(10)) obtained in vaseline media.
AB - Compressibility and structural evolution of K-cymrite, hexagonal high-pressure KAlSi3O8·H2O, has been studied up to 18 GPa using synchrotron single crystal X-ray diffraction in Ne pressure medium. K-cymrite retains its original symmetry P6/mmm up to a pressure of 7.3 GPa. As the pressure increases from 7.3 to 8.5 GPa, the weak satellite reflections appear on diffraction patterns and remain up to maximum applied pressure of 18 GPa indicating incommensurate modulation. However, main reflections can be still indexed in hexagonal cell and structure successfully solved in initial P6/mmm group. After pressure release, K-cymrite reverts to initial non-modulated single-crystal state. The parameters of third-order Birch-Murnaghan equation of state for K-cymrite are V0 = 190.45(12) ų, K0 = 56.5(7) GPa and K0’ = 3.2(12), with bulk modulus notably deviating from earlier result (K0 = 45(2) GPa and K0’ = 1.3(10)) obtained in vaseline media.
KW - Diamond anvil cell
KW - High-pressure
KW - Inconsummerate modulation
KW - K-cymrite
KW - Single crystal synchrotron x-ray diffraction
UR - https://www.mendeley.com/catalogue/c3148e2d-3cc5-3df0-9cfe-58fced3b7552/
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85202766837&origin=inward&txGid=a55b2524df8df3159fd1f5ff74fe355c
U2 - 10.1007/s00269-024-01296-3
DO - 10.1007/s00269-024-01296-3
M3 - Article
VL - 51
JO - Physics and Chemistry of Minerals
JF - Physics and Chemistry of Minerals
SN - 0342-1791
IS - 3
ER -
ID: 60836195