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Volumn 68, Issue 8, 2007, Pages 1556-1560

Spin moment over 10-300 K and delocalization of magnetic electrons above the Verwey transition in magnetite

Author keywords

A. Magnetic materials; C. Ab initio calculations; D. Phase transitions

Indexed keywords

MAGNETIC GROUND STATE; MAGNETIC MOMENT; SPINEL STRUCTURE; VERWEY TRANSITION;

EID: 34447576887     PISSN: 00223697     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.jpcs.2007.03.037     Document Type: Article
Times cited : (26)

References (38)
  • 6
    • 34447510352 scopus 로고    scopus 로고
    • Coey M. Nature 430 (2004) 327
    • (2004) Nature , vol.430 , pp. 327
    • Coey, M.1
  • 11
    • 34447512066 scopus 로고    scopus 로고
    • M.J. Cooper, P.E. Mijnarends, N. Shiotani, N. Sakai, A. Bansil, in: X-Ray Compton Scattering, Oxford University Press, Oxford, 2004, and references therein.
  • 20
    • 0002792023 scopus 로고
    • Dupasquier A., and Mills A.P. (Eds), IOS Press, Amsterdam and references therein
    • Mijnarends P.E., and Bansil A. In: Dupasquier A., and Mills A.P. (Eds). Positron Spectroscopy of Solids (1995), IOS Press, Amsterdam 25 and references therein
    • (1995) Positron Spectroscopy of Solids , pp. 25
    • Mijnarends, P.E.1    Bansil, A.2
  • 26
    • 34447505510 scopus 로고    scopus 로고
    • H. Uzu, private communication.
  • 28
    • 0001087855 scopus 로고    scopus 로고
    • The Compton profile anisotropy is often invoked to highlight relatively small oscillating terms reflecting coherence properties of the ground state wave function. See e.g. E.D. Isaacs, A. Shukla, P.M. Platzman, D.R. Hamann, B. Barbiellini, C.A. Tulk, Phys. Rev. Lett. 82 (1999) 600. In magnetite, the [1 0 0] profile is dominated by atomic d-like behavior and it does not contain a significant interference term from the nearest neighbor Fe-Fe overlap. Therefore, in the [1 0 0]-[1 1 0] difference profile, the [1 0 0] profile essentially allows us to subtract an underlying atomic contribution to the [1 1 0] profile and to thus highlight interference effects in the [1 1 0] profile.
  • 29
    • 34447531377 scopus 로고    scopus 로고
    • [1 0 0] 〉 as background does not introduce any spurious features in the anisotropy defined by Eq. (3).
  • 31
    • 34447522915 scopus 로고    scopus 로고
    • BB = 5.61 a . u . yields the good fit shown in Fig. 3.
  • 32
    • 34447532907 scopus 로고    scopus 로고
    • The error in our values of f is estimated to be ± 0.02.
  • 33
    • 34447522583 scopus 로고    scopus 로고
    • max.
  • 34
    • 34447524466 scopus 로고    scopus 로고
    • mag (p) (in particular the peak at 1.12 a.u.) which involve the same area as the negative contributions.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.