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Indexed by:期刊论文

Date of Publication:2010-01-01

Journal:JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME

Included Journals:SCIE、EI、Scopus

Volume:132

Issue:1

Page Number:1-6

ISSN No.:0022-1481

Key Words:calorimetry; copper; metallic thin films; specific heat

Abstract:This paper presents a micropulse calorimeter for heat capacity measurement of thin films. Optimization of the structure and data processing methods of the microcalorimeter improved the thermal isolation and temperature uniformity and reduced the heat capacity measurement errors. Heat capacities of copper thin films with thicknesses from 20 nm to 340 nm are measured in the temperature range from 300 K to 420 K in vacuum of 1 mPa. The specific heat of the 340 nm Cu film is close to the literature data of bulk Cu. For the thinner films, the data shows that the specific heat increases with the decreasing of film thickness (or the average crystalline size).