Magnetovolume Effects in Heusler Compounds via First-Principles Calculations
authors Goncalves, JN; Amaral, JS; Amaral, VS
nationality International
journal IEEE TRANSACTIONS ON MAGNETICS
author keywords Curie temperature; density functional theory; exchange interactions; Heusler; magnetovolume effect
keywords EXCHANGE INTERACTIONS; CURIE-TEMPERATURE; ALLOYS; DISORDER; SN
abstract Heusler alloys are promising for several applications, including magnetic refrigeration, due to high magnetocaloric and magnetovolume effects. One way to optimize this potential is by increasing the magnetovolume effect. Using density functional theory with the Korringa-Kohn-Rostoker method, we calculate the effective exchange interaction energies and corresponding mean field Curie temperature as a function of the volume (hydrostatic pressure) in several L2(1)-type Co(2)YZ Heusler alloys. Different qualitative trends and signs of the pressure derivatives of the Curie temperature and moments are found among these compounds, discussed and compared with previous calculations and experiments.
publisher IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
issn 0018-9464
year published 2014
volume 50
issue 11
digital object identifier (doi) 10.1109/TMAG.2014.2326892
web of science category Engineering, Electrical & Electronic; Physics, Applied
subject category Engineering; Physics
unique article identifier WOS:000349465900019
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  impact metrics
journal analysis (jcr 2017):
journal impact factor 1.467
5 year journal impact factor 1.517
category normalized journal impact factor percentile 38.376
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