Apparent anisotropic thermal diffusivity measured in cubic single crystals by transient grating spectroscopy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F23%3A00572000" target="_blank" >RIV/61388998:_____/23:00572000 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/23:00367380
Result on the web
<a href="https://pubs.aip.org/aip/jap/article/133/12/125108/2881424" target="_blank" >https://pubs.aip.org/aip/jap/article/133/12/125108/2881424</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0136850" target="_blank" >10.1063/5.0136850</a>
Alternative languages
Result language
angličtina
Original language name
Apparent anisotropic thermal diffusivity measured in cubic single crystals by transient grating spectroscopy
Original language description
The effect of elastic anisotropy on thermal diffusivity determination by transient grating spectroscopy (TGS) was studied. In experiments performed on a set of cubic single crystals, it was observed that TGS measurements may indicate anisotropy of thermal diffusivity in otherwise thermally isotropic materials, and that the strength of this apparent anisotropy is correlated with the strength of the elastic anisotropy. To find a source of the observed phenomenon, finite-element simulations of the TGS measurements were carried out. Time-domain TGS signals were generated from the simulations and processed identically to the experimental data. The simulation results revealed that the elastic anisotropy affects the detected time-domain signals. Consequently, the thermal diffusivity coefficients determined from them showed the artificial directional dependence.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10307 - Acoustics
Result continuities
Project
<a href="/en/project/GA22-13462S" target="_blank" >GA22-13462S: Physical acoustics of free surfaces: from Green's functions to quasiballistic phonons</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Applied Physics
ISSN
0021-8979
e-ISSN
1089-7550
Volume of the periodical
133
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
125108
UT code for WoS article
000959810900005
EID of the result in the Scopus database
2-s2.0-85151512399