liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Temperature-dependent lattice dynamics of antiferromagnetic and ferromagnetic phases of FeRh
Natl Univ Sci and Technol MISIS, Russia.
Natl Univ Sci and Technol MISIS, Russia.
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0001-7551-4717
2020 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 101, no 13, article id 134303Article in journal (Refereed) Published
Abstract [en]

We have investigated lattice dynamics of antiferromagnetic and ferromagnetic phases of cubic (B2) FeRh at various temperatures from first principles using the temperature-dependent effective potential method. We have shown that already at low temperature the cubic structure of the antiferromagnetic phase becomes dynamically stable, which eliminates the contradiction between experimental observations and previous theoretical results showing its dynamical instability at temperature T = 0 K. In addition, we have observed a significant difference in the temperature dependence of lattice vibrations of the ferromagnetic and antiferromagnetic phases. The phonon spectrum of the FM phase softens much stronger than that of the AFM phase, which provides additional contribution to the increase of vibrational entropy of the FM phase at high temperatures. The calculated difference between the vibrational entropies of the FM and AFM phases at a metamagnetic transition temperature (350 K) is 16 J/kg/K. This value is comparable with the experimental value of the total entropy change. We therefore conclude that the lattice dynamics plays a decisive role in the metamagnetic phase transition in FeRh and its remarkable magnetocaloric properties.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2020. Vol. 101, no 13, article id 134303
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-165473DOI: 10.1103/PhysRevB.101.134303ISI: 000526035200003OAI: oai:DiVA.org:liu-165473DiVA, id: diva2:1428593
Note

Funding Agencies|Ministry of Science and High Education of the Russian Federation [K2-2019-001, 211]; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-02-00871]; Swedish Research Council (VR)Swedish Research Council [2019-05600]

Available from: 2020-05-06 Created: 2020-05-06 Last updated: 2024-01-08

Open Access in DiVA

fulltext(692 kB)373 downloads
File information
File name FULLTEXT01.pdfFile size 692 kBChecksum SHA-512
4371cb682dcf62bb1d4d1053e3e618319428bc091c9e1c4eb5d4373b3db07c20a24a97b5421c9928d52165b5ee80489ddcc70320674486b8cbac50e5573aa949
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Abrikosov, Igor
By organisation
Theoretical PhysicsFaculty of Science & Engineering
In the same journal
Physical Review B
Condensed Matter Physics

Search outside of DiVA

GoogleGoogle Scholar
Total: 373 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 126 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf