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ZEBRA - a new neutron single-crystal diffractometer optimized for small samples and extreme conditions

English title ZEBRA - a new neutron single-crystal diffractometer optimized for small samples and extreme conditions
Applicant Zaharko Oksana
Number 150713
Funding scheme R'EQUIP
Research institution Paul Scherrer Institut
Institution of higher education Paul Scherrer Institute - PSI
Main discipline Condensed Matter Physics
Start/End 01.11.2014 - 31.10.2016
Approved amount 400'000.00
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All Disciplines (3)

Discipline
Condensed Matter Physics
Physical Chemistry
Inorganic Chemistry

Keywords (7)

Crystallography; Magnetism; Extreme conditions (magnetic fields, pressure); Neutron scattering; Superconductivity; Diffraction; Strongly correlated electron systems

Lay Summary (German)

Lead
Mit dem neuen Neutroneneinkristalldiffraktometer ZEBRA sollen Antworten zu wissenschaftlichen Fragestellungen gefunden werden, die extreme Probenumgebungen (Temperatur, Druck, Magnetfeld) erfordern, auch wenn nur kleine Kristalle dieser Systeme erhältlich sind.
Lay summary

Die Methode der Neutronendiffraktion wird zur Bestimmung von
kristallinen und magnetischen Strukturen verwendet. Im Zusammenhang mit
Röntgenstreuung, Elektronenmikroskopie, Bulk-Messungen, Nukleare
Magnetresonanz Spektroskopie und weiteren Techniken liefert sie wichtige
Informationen über den Zustand kondensierter Materie.

Ziele des Forschungsprojekts

Wir beabsichtigen das neue Einkristall Neutronendiffraktometer ZEBRA zu
bauen. Es ersetzt das seit 15 Jahren genutzte Einkristalldiffraktometer
TriCS an der Schweizer Neutronenspallationsquelle SINQ am Paul Scherrer
Institut. Mit diesem neuen Instrument wird es möglich, wissenschaftliche
Herausforderungen in besonders kleinen Kristallen in extremen
Probenumgebungen zu lösen.

Wissenschaftlicher und gesellschaftlicher Kontext des Forschungsprojekts

Dieses Projekt basiert auf fundierter Analyse der aktuellen
Anforderungen der Schweizerischen wissenschaftlichen Gesellschaft, sowie
auf nationalen und internationalen Perspektiven für die
Weiterentwicklung der Festkörperchemie, der Materialwissenschaften und
der Physik. Einige bereits geförderte Projekte werden ausserdem direkt
von dieser neuen Ausstattung profitieren. Zu diesen gehören die Studien
der unkonventionellen magnetischen Phasen in frustrierten Magneten mit
Dreiecks , Quadrat-, Waben- oder Diamantgittern, Mott-isolierende
Zustände in Iridaten mit starker Spin-Orbit Kopplung, Zusammenhang
zwischen Magnetismus und Supraleitung in unkonventionellen Supraleitern,
Kopplung zwischen Magnetismus und Ferroelektrizität in dünnen Filmen und
Heterostrukturen, und strukturabhängige Eigenschaften von funktionellen
metallorganischen und Perowskitmaterialien.

Direct link to Lay Summary Last update: 22.10.2014

Responsible applicant and co-applicants

Collaboration

Group / person Country
Types of collaboration
Dr. M. Kenzelmann, PSI Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure
- Exchange of personnel
Institut Laue-Langevin France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Prof. W. Paulus, Uni Montpellier France (Europe)
- in-depth/constructive exchanges on approaches, methods or results

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
30th European Crystallography Meeting Poster News from the Swiss Spallation Neutron Source SINQ: Diffraction at Non-Ambient Conditions 28.08.2016 Basel, Switzerland Zaharko Oksana; Rüegg Christian;
Swiss Physical Society Meeting Poster Diffraction Instruments at the Swiss Spallation Neutron Source SINQ 22.08.2016 Lugano, Switzerland Zaharko Oksana; Rüegg Christian;


Knowledge transfer events

Active participation

Title Type of contribution Date Place Persons involved
seminar am Abteilung Maschinen-Ingenieurwissenschaften PSI Talk 17.04.2015 PSI, Switzerland Zaharko Oksana;


Associated projects

Number Title Start Funding scheme
132877 Magnetic Excitations in Low-Dimensional Arrays of Quantum Spins 01.01.2011 Project funding
157809 A ultralow background magnet for neutron scattering possibilities under extreme conditions at SINQ 01.10.2015 R'EQUIP
141962 Mott Physics Beyond the Heisenberg Model in Iridates and Related Materials 01.01.2013 Sinergia
147071 Superconductivity in Unconventional Metals and its Interplay with Magnetism 01.10.2013 Project funding
182536 New structures and dynamics emerging from frustration 01.12.2018 Project funding
140862 Quantum Frustration in Model Magnets 01.07.2012 Project funding
147049 Structural and magneto-electric properties of strained REMnO3 films 01.11.2013 Project funding
146504 Grundlagenforschung und Anwendung: von Ionenkanälen und porösen Festkörpern über "Cluster" zu Biomaterialien 01.04.2013 Project funding
162626 Frustration in Quantum and Classical Magnets 01.12.2015 Project funding
160765 Mott Physics Beyond the Heisenberg Model in Iridates and Related Materials 01.01.2016 Sinergia

Abstract

Neutron diffraction is a method for the determination of crystal and magnetic structures of materials. This method supplemented by x-ray diffraction, electron microscopy, bulk meas-urements, nuclear magnetic resonance and other techniques supplies key experimental infor-mation about condensed matter. We propose to build a new single-crystal neutron diffractome-ter ZEBRA at the Swiss Spallation Neutron Source (SINQ) at the Paul Scherrer Institut. The project is based on thorough analysis of 15 years of operation of the single-crystal neutron dif-fractometer TriCS, the predecessor of ZEBRA, on present demands of the Swiss scientific com-munity, and on national and international perspectives for the development of solid-state chemistry, material science and physics.This new equipment will be capable of resolving future scientific challenges emerging in sys-tems available as small crystals only and requiring extreme sample environments. Several al-ready funded scientific projects will benefit directly from this new equipment. These include studies of the unconventional magnetic phases in frustrated magnets on triangular-, square-, honeycomb- and diamond-lattices, Mott-insulating states in strongly spin-orbit coupled irida-tes, interplay of magnetism and superconductivity in unconventional superconductors, cou-pling of magnetism and ferroelectricity in thin films and heterostructures, and structure-property relations in functional metal-organic and perovskite materials. To provide these new capabilities the instrument needs to achieve a high peak-to-background ratio and host extreme sample environments. We plan to realise this by building a new optimised neutron delivery system (primary instrument) and new nonmagnetic high-precision sample-positioning and ana-lyser-detector units (secondary instrument). The SNF R'Equip request will fund materials for the primary instrument and the new secondary instrument. PSI on the other hand will match the R’Equip investment and provide significant technical and engineering manpower to realise the project.We estimate that ZEBRA will give a 5-20 times gain in the peak-to-background ratio and will offer a unique set of experimental conditions such as a lifting-arm analyser in combination with various sample environments on an Eulerian cradle, a magnet supplying high magnetic fields up to 15 T, or high-pressure devices up to 2 GPa at 50 mK or 20 GPa at 4 K. The upgrade will allow us to perform experiments at the frontier of scientific research. It will provide the Swiss research community with a foremost single crystal neutron diffractometer, will make SINQ more competitive with other neutron sources, and be highly attractive for new national and international collaborations.
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