Heat capacity measurements from 150 mK to 1. 5 K on some CeSi/sub x/ metallic alloys

Technical Report · Sat Aug 01 04:00:00 EDT 1987

OSTI ID:6118630

Klavins, P

A calorimeter is described which was designed to operate in the temperature range 150 mK to 1.5 K. The addenda was constructed with materials that have small heat capacities so that the heat capacity contribution of the addenda was much smaller than that of the sample being measured. A bellows type heat switch was used to cool the sample and a standard heat pulse measurement technique was used to obtain data. The heat capacities of two copper samples were measured in order to test the calorimeter. Deviation from the copper reference equation was observed below 0.45/sup 0/K. The heat capacities of CeSi/sub 1.850/ and CeSi/sub 1.855/ were measured in the temperature range 150 mK to 1.5 K to determine the nature of their magnetic state. Results indicated that both CeSi/sub 1.850/ and CeSi/sub 1.855/ are nonmagnetic down to 150 mK.

• Research Organization: Ames Lab., IA (USA)
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6118630
• Report Number(s): IS-T-1315; ON: DE87013598
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
CALORIMETERS
CERIUM ALLOYS
COPPER
ELECTRONIC SPECIFIC HEAT
ELEMENTS
MEASURING INSTRUMENTS
METALS
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
SILICON ALLOYS
SPECIFIC HEAT
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS