Zobrazeno 1 - 10
of 128
pro vyhledávání: '"Pavel Karen"'
Publikováno v:
IUCrJ, Vol 3, Iss 5, Pp 341-353 (2016)
The solid-state phase transitions and intermediate structures of S-2-aminobutanoic acid (l-2-aminobutyric acid), S-2-aminopentanoic acid (l-norvaline), S-2-aminohexanoic acid (l-norleucine) and l-methionine between 100 and 470 K, identified by differ
Externí odkaz:
https://doaj.org/article/034af2392bb742d2a95e04e4b63dbee5
Autor:
Pavel Karen
Publikováno v:
Pure and Applied Chemistry.
Periodicity of elements is the basis of teaching and understanding inorganic chemistry. This review exemplifies simple rules and counting procedures as heuristic algorithms yielding often-dimensionless quantities that, as such or together with auxili
Autor:
Pavel Karen
Ten samples across the range of oxygen nonstoichometry of the ErBa2FeIII3O8 triple perovskite were obtained by high-temperature equilibration and quenching from flowing gas of controlled oxygen partial pressure. The crystal structure accommodating ad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0e73123882613f4443ba0c7df47eed9
http://hdl.handle.net/10852/101719
http://hdl.handle.net/10852/101719
Autor:
Pavel Karen
Publikováno v:
Journal of Solid State Chemistry. :124137
Autor:
Pavel Karen
Publikováno v:
'Journal of Solid State Chemistry ', vol: 311, pages: 123102-1-123102-8 (2022)
Crystal structure of the EuBaCo2O5.502(1) perovskite obtained by equilibration and slow cooling in closed ampoule is studied between 100 and 400 K by high-resolution synchrotron powder X-ray diffraction, and its thermally induced phase transitions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2af32d589669ea11bcb1803d965d6704
http://hdl.handle.net/10852/94931
http://hdl.handle.net/10852/94931
Autor:
Pavel Karen
Synthesis conditions to obtain single-phase YBaMn2O5 are reported and its crystal structure refined from neutron powder diffraction data collected between 25 and 600 °C in the paramagnetic state. The structure parameters are used to reason why th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4fe28602a3521d530e3da3d92146d63c
http://hdl.handle.net/10852/95552
http://hdl.handle.net/10852/95552
Autor:
Pavel Karen
Publikováno v:
Journal of Solid State Chemistry. 314:123367
High-intensity high-resolution synchrotron powder diffraction (SXPD) and differential scanning calorimetry (DSC) are used to investigate the valence-mixing transition in EuBaCo2O4.999(3) sample of composition homogenized by annealing with zirconium-m
This comprehensive textbook provides a modern, self-contained treatment for upper undergraduate and graduate level students. It emphasizes the links between structure, defects, bonding, and properties throughout, and provides an integrated treatment
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a71fe9e2b4fa678587fe8f60d13facb
https://doi.org/10.1017/9781139025348
https://doi.org/10.1017/9781139025348