onr:"swepub:oai:DiVA.org:kth-180495"
Search: onr:"swepub:oai:DiVA.org:kth-180495" > Thermal spin fluctu...
- 1 of 1
- Previous record
- Next record
- To hitlist
Thermal spin fluctuation effect on the elastic constants of paramagnetic Fe from first principles
-
- Dong, Zhihua (author)
- KTH,Tillämpad materialfysik,Chongqing University, China,Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden.;Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400030, Peoples R China.
-
- Li, Wei (author)
- KTH,Tillämpad materialfysik,Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden.
-
- Schönecker, Stephan (author)
- KTH,Tillämpad materialfysik,ENHETEN EGENSKAPER,Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden.
- show more...
- show less...
- (creator_code:org_t)
- American Physical Society, 2015
- 2015
- English.
- In: Physical Review B. Condensed Matter and Materials Physics. - : American Physical Society. - 1098-0121 .- 1550-235X. ; 92:22
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- We investigate the impact of longitudinal thermal spin fluctuations on the temperature dependence of the elastic constants of paramagnetic body-centered-cubic (bcc) and face-centered-cubic (fcc) Fe. Based on a series of constrained local magnetic moment calculations, the spin fluctuation distribution is established using Boltzmann statistics and involving the Jacobian weight, and a temperature-dependent quadratic mean moment is introduced that accurately represents the spin fluctuation state as a function of temperature. We show that with increasing temperature, c' and c(44) for the fcc phase and c(44) for the bcc phase decrease at different rates due to different magnetoelastic coupling strengths. In contrast, c' in the bcc phase exhibits relatively high thermal stability. Longitudinal thermal spin fluctuations diminish the softening of both elastic constants in either phase and have comparatively large contributions in the fcc phase. In both bcc and fcc Fe, c(44) has a larger temperature factor than c'. On the other hand, c' is more sensitive to the longitudinal thermal spin fluctuations, which balance the volume-induced softening by 21.6% in fcc Fe.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
- Physical Review B. Condensed Matter and Materials Physics (Search for host publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Dong, Zhihua
- Li, Wei
- Schönecker, Step ...
- Lu, Song
- Chen, Dengfu
- Vitos, Levente
- About the subject
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Physical Science ...
- and Condensed Matter ...
- Articles in the publication
- Physical Review ...
- By the university
- Royal Institute of Technology
- Uppsala University
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
