Primary Pyroelectricity in Barium Titanate Ceramics

Autor:	T. A. Perls, W. I. Dobrov, T. J. Diesel
Rok vydání:	1958
Předmět:	Materials science Time constant General Physics and Astronomy Mineralogy Piezoelectricity Electric charge Pyroelectricity chemistry.chemical_compound chemistry Thermal radiation visual_art Barium titanate visual_art.visual_art_medium Crystallite Ceramic Composite material
Zdroj:	Journal of Applied Physics. 29:1297-1302
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.1723430
Popis:	Data have been obtained on the pyroelectric and piezoelectric behavior of samples of a polycrystalline barium titanate ceramic in an effort to determine the possible existence of a primary pyroelectric effect. It is shown that the total pyroelectric effect is in a direction opposite to the piezoelectric contribution resulting from volumetric changes and that, as a consequence, there must exist a primary pyroelectric effect. The time constant of the samples for generation of electrical signals from heat pulses was less than 12 μsec. Practical applications of barium titanate sensors may be found in the measurement of heat radiation beams having large cross sections.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a602bf4e57aa66a68f607d0af6456f08 https://doi.org/10.1063/1.1723430 Zobrazit plný text záznamu