Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Alexander I Krivchikov"'
Publikováno v:
Journal of Physics Communications, Vol 8, Iss 1, p 015001 (2024)
The temperature dependencies of the thermal conductivity coefficient, κ (T), in 1-fluoroadamantane were investigated for two different orientationally-disordered states. In the first one, κ (T) exhibits a crystalline character with a typical maximu
Externí odkaz:
https://doaj.org/article/2d85795acec242d3b0bbe3649759387e
Autor:
Daria Szewczyk, Jonathan F. Gebbia, Andrzej Jeżowski, Alexander I. Krivchikov, Tatiana Guidi, Claudio Cazorla, Josep-Lluís Tamarit
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
Abstract Disorder–disorder phase transitions are rare in nature. Here, we present a comprehensive low-temperature experimental and theoretical study of the heat capacity and vibrational density of states of 1-fluoro-adamantane (C10H15F), an intrigu
Externí odkaz:
https://doaj.org/article/2b484f4e0964463881dd483afef2485c
Autor:
Alexander I. Krivchikov, Andrezj Jeżowski, Daria Szewczyk, Oxsana A. Korolyuk, Olesya O. Romantsova, Lubov M. Buravtseva, Claudio Cazorla, Josep Ll. Tamarit
Publikováno v:
The journal of physical chemistry letters. 13(22)
We demonstrate that the heat capacity Boson peak (BP)-like anomaly appearing in fully ordered anharmonic molecular crystals emerges as a result of the strong interactions between propagating (acoustic) and low-energy quasi-localized (optical) phonons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47a1081492f8e8309dd089ce20a71639
https://pubmed.ncbi.nlm.nih.gov/35652901
https://pubmed.ncbi.nlm.nih.gov/35652901
Autor:
Luming Zhang, Tetsuya Nomoto, Satoshi Yamashita, Hiroki Akutsu, Alexander I. Krivchikov, Yasuhiro Nakazawa
Publikováno v:
Low Temperature Physics. 49:539
The construction of a thermal conductivity measurement system designed for tiny molecules-based compounds is reported. We introduce complementary usage of chip-type RuO2 thermometers and E-type thermocouples in the sample part by using thin (ϕ 13μm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0327d9e1edb0087636131347892f861c
https://doi.org/10.1063/10.0017814
https://doi.org/10.1063/10.0017814
Autor:
Daria Szewczyk, Alexander I. Krivchikov, Maksym S. Barabashko, Alexander V. Dolbin, Nikolay A. Vinnikov, Razet Basnukaeva, Grzegorz Chajewski, Andrzej Jeżowski
Publikováno v:
Low Temperature Physics. 49:593
The low-temperature dependence of the heat capacity of acrylonitrile-butadiene-styrene (ABS) polymer and its composite with thermally reduced graphene oxide was studied. The existence of a so-called “boson peak” characteristic of orientational an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51fc8f77ab2824072aaefbe2e7839ad6
https://doi.org/10.1063/10.0017821
https://doi.org/10.1063/10.0017821
Publikováno v:
Low Temperature Physics. 46:111-117
A new approach is used to analyze the experimental data on the temperature dependence of low-temperature thermal conductivity κ(T) of some typical disordered complex crystals: clathrate hydrates (tetrahydrofuran, methane, xenon), Sr8Ga16Ge30 and p-t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c11f0c03a5a24a4f623e0b97fb63fcf
https://doi.org/10.1063/10.0000528
https://doi.org/10.1063/10.0000528
Publikováno v:
Molecular Crystals and Liquid Crystals. 696:65-74
Influence of nanoparticles of the clay nanomaterial laponite on the crystallization process of various polymorphic phases of the composite TPP/laponite was studied by infrared spectroscopy and diff...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94e8727603e4b806f9f719c1bb8dccf8
https://doi.org/10.1080/15421406.2020.1731094
https://doi.org/10.1080/15421406.2020.1731094
Autor:
O A Koroyuk, Claudio Cazorla, J. Ll. Tamarit, Motohiro Nakano, Jonathan F. Gebbia, Yuji Miyazaki, Alexander I. Krivchikov
Publikováno v:
The Journal of Physical Chemistry Letters
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
We measured the specific heat Cp of normal (C4H4S) and deuterated (C4D4S) thiophene in the temperature interval of 1 = T, K = 25. C4H4S exhibits a metastable phase II2 and a stable phase V, both with frozen orientational disorder (OD), whereas C4D4S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4377fe93ba1e1bf474c4aa4de3eb59f
https://pubmed.ncbi.nlm.nih.gov/33625859
https://pubmed.ncbi.nlm.nih.gov/33625859
Autor:
Tatiana Guidi, Josep-Lluís Tamarit, Daria Szewczyk, Jonathan F. Gebbia, Alexander I. Krivchikov, Claudio Cazorla, Andrzej Jeżowski
Publikováno v:
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Scientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
Scientific Reports
Universitat Politècnica de Catalunya (UPC)
Scientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
Scientific Reports
Disorder–disorder phase transitions are rare in nature. Here, we present a comprehensive low-temperature experimental and theoretical study of the heat capacity and vibrational density of states of 1-fluoro-adamantane (C10H15F), an intriguing molec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20d8a17f31dab210f531a8517f09faca
Autor:
Satoshi Yamashita, Yasuhiro Nakazawa, Tetsuya Nomoto, Hiroki Akutsu, Alexander I. Krivchikov, Shusaku Imajo
Publikováno v:
Journal of Thermal Analysis and Calorimetry. 135:2831-2836
We newly constructed a thermal conductivity measurement system for single crystals of molecular compounds. This system enables us to measure the thermal conductivity of samples with the length of less than 1.0 mm. In order to evaluate the capability
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5de09d399b78ca29ef33af45649aa95
https://doi.org/10.1007/s10973-018-7799-1
https://doi.org/10.1007/s10973-018-7799-1