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Title: Origin of the Tetragonal Ground State of Heusler Compounds

Authors:
; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1348280
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review Applied
Additional Journal Information:
Journal Volume: 7; Journal Issue: 3; Related Information: CHORUS Timestamp: 2017-03-24 22:56:49; Journal ID: ISSN 2331-7019
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Faleev, Sergey V., Ferrante, Yari, Jeong, Jaewoo, Samant, Mahesh G., Jones, Barbara, and Parkin, Stuart S. P. Origin of the Tetragonal Ground State of Heusler Compounds. United States: N. p., 2017. Web. doi:10.1103/PhysRevApplied.7.034022.
Faleev, Sergey V., Ferrante, Yari, Jeong, Jaewoo, Samant, Mahesh G., Jones, Barbara, & Parkin, Stuart S. P. Origin of the Tetragonal Ground State of Heusler Compounds. United States. doi:10.1103/PhysRevApplied.7.034022.
Faleev, Sergey V., Ferrante, Yari, Jeong, Jaewoo, Samant, Mahesh G., Jones, Barbara, and Parkin, Stuart S. P. Fri . "Origin of the Tetragonal Ground State of Heusler Compounds". United States. doi:10.1103/PhysRevApplied.7.034022.
@article{osti_1348280,
title = {Origin of the Tetragonal Ground State of Heusler Compounds},
author = {Faleev, Sergey V. and Ferrante, Yari and Jeong, Jaewoo and Samant, Mahesh G. and Jones, Barbara and Parkin, Stuart S. P.},
abstractNote = {},
doi = {10.1103/PhysRevApplied.7.034022},
journal = {Physical Review Applied},
number = 3,
volume = 7,
place = {United States},
year = {Fri Mar 24 00:00:00 EDT 2017},
month = {Fri Mar 24 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevApplied.7.034022

Citation Metrics:
Cited by: 2works
Citation information provided by
Web of Science

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  • We have synthesized an intermetallic compound with a distorted Heusler structure, YbRh2Pb. We present a study of the magnetic, thermal, and transport properties. Heat capacity measurements revealed that YbRh2Pb magnetically orders below TN=0.57 K from a paramagnetic state with substantial crystal electric field splitting. Magnetic field further splits the ground state, which leads to the suppression of magnetic order in YbRh2Pb.
  • Relativistic full-potential calculations within the generalized gradient approximation (GGA) for a series of Mn-based Heusler alloys are presented. Calculated equilibrium lattice parameters deviate less than 1.2% from the experimental values. The main features of a half metallic system are present in the density of states for the PtMnSb and NiMnSb. We predict that PdMnSb shows half metallic character under hydrostatic pressure. The substitution of Sb in PtMnSb by Sn or Te destroys the minority spin band gap. Spin and orbital magnetic moments for all the systems are in good agreement with previous calculations and experimental data. L{sub 2,3} x-ray absorptionmore » and x-ray magnetic circular dichroism (XMCD) spectra are calculated for all the five compounds. Pt spectra present big deviations from system to system in the PtMnY (Y=Sn,Sb,Te) compounds while Mn spectra show only small deviations. For all these spectra GGA underestimates the L{sub 3}/L{sub 2} integrated branching ratio and produces a much smaller L{sub 2} peak intensity for the Ni site in NiMnSb. The XMCD sum rules are used to compute the spin and orbital magnetic moments and the results are compared to the direct calculations. (c) 2000 The American Physical Society.« less
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  • Cited by 27
  • Full-potential linearized augmented plane wave methods are carried out to investigate the electronic structures and magnetic properties in semi-Heusler alloy FeCrSe. Results show that FeCrSe is half-metallic ferromagnet with the half-metallic gap 0.31 eV at equilibrium lattice constant. Calculated total magnetic moment of 2.00μ{sub B} per formula unit follows the Slater-Pauling rule quite well. Two kinds of structural changes are used to investigate the sensitivity of half-metallicity. It is found that the half-metallicity can be retained when lattice constant is changed by −4.56% to 3.52%, and the results of tetragonal distortion indicate the half-metallicity can be kept at the range ofmore » c/a ratio from 0.85 to 1.20. The Curie temperature, cohesive energy, and heat of formations of FeCrSe are also discussed.« less