Thermal properties of K3Li2−x Nb5+x O15±δ crystals

Autor:	A. M. Luginets, A. U. Sheleg, S. A. Guretskii, E. M. Zub, T. I. Dekola, N. P. Tekhanovich
Rok vydání:	2003
Předmět:	Crystal Diffraction Materials science Solid-state physics TEC Thermodynamics Calorimetry Condensed Matter Physics Anisotropy Adiabatic process Thermal expansion Electronic Optical and Magnetic Materials
Zdroj:	Physics of the Solid State. 45:441-443
ISSN:	1090-6460 1063-7834
Popis:	The unit-cell parameters of the nonlinear crystal K3Li2−xNb5+xO15±δ were measured with x-ray diffraction in the temperature region 80–300 K. The room-temperature parameters of the crystal of this composition are a=12.599±0.001 and c=4.018±0.001 A. The temperature dependences of the thermal expansion coefficients (TECs) along the [100] and [001] crystallographic directions were determined. A small TEC anisotropy was established. The specific heat of this crystal was measured using adiabatic calorimetry in the temperature interval 80–300 K. The experimental data on the specific heat were used to calculate the changes in the thermodynamic functions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::34f2a4af4851567216615565126f9a68 https://doi.org/10.1134/1.1562227 Zobrazit plný text záznamu Full text from SpringerLink