期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 458, 期 -, 页码 301-309出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2018.03.020
关键词
Magnetocaloric; Magnetization; Entropy change
资金
- Advanced Manufacturing Office of the Office of Energy Efficiency & Renewable Energy
- U.S. Department of Energy by Iowa State University of Science and Technology [DE-AC02-07CH11358]
Conventional magnetometry is irreplaceable in evaluating bulk magnetization of materials over broad temperature and field ranges. The technique is also effective in quantifying hysteresis that may be associated with magnetic and structural phase transitions that occur during the magnetizing/demagnetizing cycling, and the derived magnetic field-induced isothermal entropy change - one of the most important properties in the field of magnetocalorics. Both systematic and random errors present during the measurements of magnetization, however, may lead to erroneous conclusions. Using two well-known materials - elemental Gd and intermetallic Gd5Si2Ge2 as examples, we consider best practices in performing reliable and rapid magnetization measurements for proper characterization of magnetocaloric properties. (C) 2018 Elsevier B.V. All rights reserved.
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