APPARATUS FOR THERMAL-DIFFUSIVITY MEASUREMENTS IN AN EXTENDED TEMPERATURE-RANGE

Authors
CALZONA V CIMBERLE MR FERDEGHINI C GRASSO G MARRE D PUTTI M RIZZUTO C SIRI AS
Citation
V. Calzona et al., APPARATUS FOR THERMAL-DIFFUSIVITY MEASUREMENTS IN AN EXTENDED TEMPERATURE-RANGE, Cryogenics, 34, 1994, pp. 457-460
Citations number
4
Categorie Soggetti
Physics, Applied",Thermodynamics
Journal title
Cryogenics → ACNP
ISSN journal
00112275
Volume
34
Year of publication
1994
Supplement
ICEC
Pages
457 - 460
Database
ISI
SICI code
0011-2275(1994)34:<457:AFTMIA>2.0.ZU;2-8
Abstract
We present an improved ac method to measure the thermal diffusivity in an extended range of temperatures (15-330 K) and magnetic fields (0-8 T). We solder wires of a selected material directly on the sample: so , the thermal sensor is the junction between the sample and the wire. We have verified that this fast thermocouple works at frequencies high enough to neglect thermal losses also at the highest temperatures. Mo reover, the soldered wires allow a concurrent four-wire resistivity me asurement on the sample itself.