Comparison of the magnetocaloric effect derived from heat capacity, direct, and magnetization measurements

Journal Article · Sun Jun 01 00:00:00 EDT 1997 · Advances in Cryogenic Engineering

OSTI ID:476732

Pecharsky, V K; Gschneidner, Jr, K A ^[1]

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1. Ames Lab., IA (United States)

A theoretical and experimental evaluation of the experimental method for determining the magnetocaloric properties of magnetic materials show that the magnetic field heat capacity data can provide a reliable results, which may be used for a detailed analysis of the thermodynamic cycle efficiency. In addition the magnetocaloric effect and the magnetic field induced magnetic entropy change determined from the magnetic field dependence of the heat capacity has an accuracy that is equal to or better than that obtained from other methods -- direct and magnetization measurements.

• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 476732
• Report Number(s): CONF-950722-; ISSN 0065-2482; TRN: 97:009223
• Journal Information: Advances in Cryogenic Engineering, Vol. 42A; Conference: CEC/ICMC `95: cryogenic engineering conference and international cryogenic materials conference, Columbus, OH (United States), 17-21 Jul 1995; Other Information: PBD: 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
MAGNETIC MATERIALS
MAGNETIC SPECIFIC HEAT
ENTROPY
MAGNETIC REFRIGERATORS
INTERMETALLIC COMPOUNDS
THERMODYNAMIC CYCLES
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE DEPENDENCE