- Tytuł:
- Thermal Wave Measurements with a Mirage Detection for Investigation of Thermal Diffusivity of $GdCa_4O(BO_3)_3$ Single Crystals
- Autorzy:
-
Bodzenta, J.
Kaźmierczak-Bałata, A.
Łukasiewicz, T.
Hofman, B.
Kucytowski, J. - Powiązania:
- https://bibliotekanauki.pl/articles/1811523.pdf
- Data publikacji:
- 2008-12
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
42.55.Tv
42.70.Hj
65.40.-b
66.30.Xj
66.70.-f - Opis:
- Single crystals of $GdCa_4O(BO_3)_3$ were examined to determine their thermal properties. Samples were grown by the Czochralski pulling technique. There were three types of samples: a pure crystal, the crystal doped with neodymium (4 at.% of Nd), and the third one doped with ytterbium (7 at.% of Yb). All samples were rectangular prisms with edges parallel to the axes of the optical indicatrix X, Y, Z (principal axes). The thermal diffusivity was determined by means of the thermal wave method with the optical detection of the temperature disturbance based on a mirage effect. Experimental results showed anisotropy of the thermal diffusivity. The thermal diffusivity along Y direction has the highest value while values obtained in X and Z axes are much lower. Dopants cause decrease in the thermal diffusivity for all investigated directions.
- Źródło:
-
Acta Physica Polonica A; 2008, 114, 6A; A-27-A-32
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł