Full polarization analysis of resonant superlattice and forbidden x-ray reflections in magnetite

被引：15

作者：

Bland, S. R. ^{[1
]}

Detlefs, B. ^{[2
]}

Wilkins, S. B. ^{[3
]}

Beale, T. A. W. ^{[1
]}

Mazzoli, C. ^{[2
]}

Joly, Y. ^{[4
,5
]}

Hatton, P. D. ^{[1
]}

Lorenzo, J. E. ^{[4
,5
]}

Brabers, V. A. M. ^{[6
]}

机构：

[1] Univ Durham, Dept Phys, Durham DH1 3LE, England

[2] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[3] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA

[4] CNRS, Inst Neel, F-38042 Grenoble 9, France

[5] Univ Grenoble 1, F-38042 Grenoble 9, France

[6] Eindhoven Univ Technol, Dept Phys, NL-5600 MB Eindhoven, Netherlands

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2009年 / 21卷 / 48期

基金：

英国工程与自然科学研究理事会;

关键词：

VERWEY TRANSITION; ATS SCATTERING; FE3(1-DELTA)O4; CRYSTALS;

D O I：

10.1088/0953-8984/21/48/485601

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Despite being one of the oldest known magnetic materials, and the classic mixed valence compound, thought to be charge ordered, the structure of magnetite below the Verwey transition is complex and the presence and role of charge order is still being debated. Here, we present resonant x-ray diffraction data at the iron K-edge on forbidden (0, 0, 2n+1)(C) and superlattice (0, 0, 2n+1/2)(C) reflections. Full linear polarization analysis of the incident and scattered light was conducted in order to explore the origins of the reflections. Through simulation of the resonant spectra we have confirmed that a degree of charge ordering takes place, while the anisotropic tensor of susceptibility scattering is responsible for the superlattice reflections below the Verwey transition. We also report the surprising result of the conversion of a significant proportion of the scattered light from linear to nonlinear polarization.

引用

页数：9

共 50 条

[1] Resonant x-ray scattering and full polarisation analysis of forbidden half-integer reflections in magnetite
Bland, S. R.
Detlefs, B.
Wilkins, S. B.
Beale, T. A. W.
Mazzoli, C.
Joly, Y.
Hatton, P. D.
Lorenzo, J. E.
Brown, S. D.
Brabers, V. A. M.
[J]. POLARIZED NEUTRONS AND SYNCHROTRON X-RAYS FOR MAGNETISM CONFERENCE 2009, 2010, 211
[2] Critical reexamination of resonant soft x-ray Bragg forbidden reflections in magnetite
Wilkins, S. B.
Di Matteo, S.
Beale, T. A. W.
Joly, Y.
Mazzoli, C.
Hatton, P. D.
Bencok, P.
Yakhou, F.
Brabers, V. A. M.
[J]. PHYSICAL REVIEW B, 2009, 79 (20):
[3] Polarization anisotropy of X-ray atomic factors and 'forbidden' resonant reflections
Dmitrienko, VE
Ishida, K
Kirfel, A
Ovchinnikova, EN
[J]. ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 2005, 61 : 481 - 493
[4] Anisotropic resonant X-ray scattering: Beauty of forbidden reflections
Kokubun, J.
Dmitrienko, V. E.
[J]. EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS, 2012, 208 (01): : 39 - 52
[5] Anisotropic resonant X-ray scattering: Beauty of forbidden reflections
J. Kokubun
V. E. Dmitrienko
[J]. The European Physical Journal Special Topics, 2012, 208 : 39 - 52
[6] Resonant "forbidden" reflections in magnetite
García, J
Subías, G
Proietti, MG
Renevier, H
Joly, Y
Hodeau, JL
Blasco, J
Sánchez, MC
Bérar, JF
[J]. PHYSICAL REVIEW LETTERS, 2000, 85 (03) : 578 - 581
[7] ROUNDABOUT EXCITATIONS OF POLARIZATION-FORBIDDEN X-RAY REFLECTIONS
KSHEVETSKY, SA
STETSKO, YP
SHELYUDKO, SA
[J]. KRISTALLOGRAFIYA, 1985, 30 (03): : 468 - 473
[8] Chirality-induced 'forbidden' reflections in X-ray resonant scattering
Dmitrienko, VE
Ovchinnikova, EN
[J]. ACTA CRYSTALLOGRAPHICA SECTION A, 2001, 57 : 642 - 648
[9] Resonant X-ray scattering and "forbidden" reflections in crystals with local anisotropy
Ovchinnikova, EN
Dmitrienko, VE
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2000, 448 (1-2): : 216 - 221
[10] Resonant X-ray diffraction: Forbidden bragg reflections induced by atomic displacements
Dmitrienko, VE
Ovchinnikova, EN
[J]. STRUCTURAL CHEMISTRY, 2002, 13 (3-4) : 397 - 404

← 1 2 3 4 5 →