The thermal expansion of amorphous arsenic

Autor:	A. R. Khan, I. J. Brown, M. A. Brown
Rok vydání:	1984
Předmět:	Materials science General Chemical Engineering Extrapolation General Physics and Astronomy Thermodynamics chemistry.chemical_element Atmospheric temperature range Capacitance Thermal expansion Amorphous solid symbols.namesake chemistry symbols Dilatometer Arsenic Debye model
Zdroj:	Philosophical Magazine B. 49:101-106
ISSN:	1463-6417 1364-2812
DOI:	10.1080/13642818408246504
Popis:	The linear thermal expansion of amorphous arsenic (a-As) has been measured in the temperature range 4–293 K, using a three-terminal capacitance dilatometer of recent design and construction. The linear thermal expansion measured is generally of the form predicted by a simple Debye model, with a room-temperature value of 1·06 × 10−5 K−1. This value is consistent with the room-temperature value of the coefficient of volume expansion of 3·1 × 10−5 K−1 used by previous authors, who obtained this value by extrapolation of early, limited low-temperature data. At low temperatures (4–20 K), the thermal expansion deviates from a T 3 law in a similar manner to the reported behaviour of the low-temperature specific heat of a-As. The Gruneisen coefficient in this temperature range has been calculated to vary between 1 and 1·95.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2691485aae772f81ebecc1038b821e44 https://doi.org/10.1080/13642818408246504 Zobrazit plný text záznamu