Resonant nanodiffraction x-ray imaging reveals role of magnetic domains in complex oxide spin caloritronics

被引：3

作者：

Evans, Paul G. ^{[1
]}

Marks, Samuel D. ^{[1
]}

Gepraegs, Stephan ^{[2
]}

Dietlein, Maxim ^{[2
,3
]}

Joly, Yves ^{[4
]}

Dai, Minyi ^{[1
]}

Hu, Jiamian ^{[1
]}

Bouchenoire, Laurence ^{[5
,6
]}

Thompson, Paul B. J. ^{[5
,6
]}

Schulli, Tobias U. ^{[7
]}

Richard, Marie-Ingrid ^{[7
,8
]}

Gross, Rudolf ^{[2
,3
,9
]}

Carbone, Dina ^{[10
]}

Mannix, Danny ^{[4
,11
,12
]}

机构：

[1] Univ Wisconsin, Madison, WI 53706 USA

[2] Bayer Akad Wissensch, Walther Meisser Inst, D-85748 Garching, Germany

[3] Tech Univ Munich, Phys Dept, D-85748 Garching, Germany

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

[5] European Synchrotron, ESRF, XMaS, F-38043 Grenoble, France

[6] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England

[7] European Synchrotron, ESRF, F-38043 Grenoble, France

[8] Aix Marseille Univ, Univ Toulon, CNRS, IM2NP UMR 7334, F-13397 Marseille, France

[9] Munich Ctr Quantum Sci & Technol MCQST, Schellingstr 7, D-80799 Munich, Germany

[10] MAX IV Lab, Fotongatan 2, S-22484 Lund, Sweden

[11] European Spallat Source, SE-22100 Lund, Sweden

[12] Aarhus Univ, Langelandsgade 140, DK-8000 Aarhus, Denmark

来源：

SCIENCE ADVANCES | 2020年 / 6卷 / 40期

基金：

英国工程与自然科学研究理事会;

关键词：

IRON; SCATTERING; ANISOTROPY;

D O I：

10.1126/sciadv.aba9351

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Spin electronic devices based on crystalline oxide layers with nanoscale thicknesses involve complex structural and magnetic phenomena, including magnetic domains and the coupling of the magnetism to elastic and plastic crystallographic distortion. The magnetism of buried nanoscale layers has a substantial impact on spincaloritronic devices incorporating garnets and other oxides exhibiting the spin Seebeck effect (SSE). Synchrotron hard x-ray nanobeam diffraction techniques combine structural, elemental, and magnetic sensitivity and allow the magnetic domain configuration and structural distortion to be probed in buried layers simultaneously. Resonant scattering at the Gd L-2 edge of Gd3Fe5O12 layers yields magnetic contrast with both linear and circular incident x-ray polarization. Domain patterns facet to form low-energy domain wall orientations but also are coupled to elastic features linked to epitaxial growth. Nanobeam magnetic diffraction images reveal diverse magnetic microstructure within emerging SSE materials and a strong coupling of the magnetism to crystallographic distortion.

引用

页数：7

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[1] A study of the domain structure of ferrites in the vicinity of the compensation point by Mossbauer spectroscopy [J].