Best practices in evaluation of the magnetocaloric effect from bulk magnetization measurements

被引：62

作者：

Neves Bez, H. ^{[1
,2
]}

Yibole, H. ^{[1
]}

Pathak, A. ^{[1
]}

Mudryk, Y. ^{[1
]}

Pecharsky, V. K. ^{[3
]}

机构：

[1] Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA

[2] Fed Univ Santa Catarina UFSC, Dept Mech Engn, Polo Res Labs Emerging Technol Cooling & Thermoph, BR-88040900 Florianopolis, SC, Brazil

[3] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2018年 / 458卷

关键词：

Magnetocaloric; Magnetization; Entropy change; PHASE-TRANSITION; ENTROPY CHANGE; TEMPERATURE; REFRIGERATOR; MANGANITES;

D O I：

10.1016/j.jmmm.2018.03.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：301 / 309

页数：9

共 32 条

[1] Demagnetizing factors for rectangular ferromagnetic prisms [J].