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Sensitive magnetic susceptibility measurements of materials with novel magnetic correlations and ground states

English title Sensitive magnetic susceptibility measurements of materials with novel magnetic correlations and ground states
Applicant Kenzelmann Michel
Number 139082
Funding scheme R'EQUIP
Research institution Paul Scherrer Institut
Institution of higher education Paul Scherrer Institute - PSI
Main discipline Condensed Matter Physics
Start/End 01.07.2012 - 31.03.2014
Approved amount 200'000.00
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All Disciplines (2)

Discipline
Condensed Matter Physics
Material Sciences

Lay Summary (English)

Lead
Lay summary

Magnetism plays an important role in many new materials that show interesting functional properties. For example, many materials of interest for applications are synthesized in form of thin films which feature an inherently small magnetic response. Other examples include magnetically-frustrated materials which can feature magnetic phase transitions without any easily detectable anomaly in the magnetic susceptibility. Further examples are multiferroic materials with directly coupled mag- netic and ferroelectric properties which may feature electrically-tunable magnetic properties.

Magnetic properties are often difficult to measure because of their small size, requiring the use of large facilities for microscopic measurements and sensitive magnetometers for macroscopic magnetic measurements. In this project, we will purchase and commission a sensitive magnetic property measurement system feating a sensitivity of 10-8 emu which will be used for large facility projects carried out at PSI. The magnetometer will will also be adapted that magnetic measurements can be made simultaneously with pyroelectric and dielectric measurements or in the presence of a high electric fields and electric currents. This project will allow new type of experiments particularly in the field of magneto-electric functional materials.

Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Publications

Publication
Distinct domain switching in Nd0.05Ce0.95CoIn5 at low and high fields
Mazzone D. G., Yadav R., Bartkowiak M., Gavilano J. L., Raymond S., Ressouche E., Lapertot G., Kenzelmann M. (2018), Distinct domain switching in Nd0.05Ce0.95CoIn5 at low and high fields, in Scientific Reports, 8(1), 1295-1295.
Design of magnetic spirals in layered perovskites: Extending the stability range far beyond room temperature
Shang Tian, Canévet Emmanuel, Morin Mickaël, Sheptyakov Denis, Fernández-Díaz María Teresa, Pomjakushina Ekaterina, Medarde Marisa (2018), Design of magnetic spirals in layered perovskites: Extending the stability range far beyond room temperature, in Science Advances, 4(10), eaau6386-eaau6386.
Experimental signatures of emergent quantum electrodynamics in Pr2Hf2O7
Sibille Romain, Gauthier Nicolas, Yan Han, Ciomaga Hatnean Monica, Ollivier Jacques, Winn Barry, Filges Uwe, Balakrishnan Geetha, Kenzelmann Michel, Shannon Nic, Fennell Tom (2018), Experimental signatures of emergent quantum electrodynamics in Pr2Hf2O7, in Nature Physics, 14(7), 711-715.

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Gordon Conference on Multiferroic and Magnetoelectric Materials Talk given at a conference Quadrupolar Fluctuations in Frustrated Magnets 05.08.2018 Bates College, United States of America Kenzelmann Michel;
2015 Joint ISAF-ISIF-PFM Conference Talk given at a conference Multiferroic domains near a magneto-electric quantum critical point 24.05.2015 Singapore, Singapore Kenzelmann Michel;


Associated projects

Number Title Start Funding scheme
138018 Magneto-electric interactions, excitations and phase transitions 01.11.2012 Project funding (Div. I-III)
129519 Dynamic Behaviour of Artificial Frustrated Spin Systems 01.05.2010 Project funding (Div. I-III)
132877 Magnetic Excitations in Low-Dimensional Arrays of Quantum Spins 01.01.2011 Project funding (Div. I-III)
119609 Manipulating magnetism and orbitals by electric fields 01.11.2008 Project funding (Div. I-III)
122054 Interplay of Magnetism and Superconductivity in Unconventional Superconductors 01.04.2009 Project funding (Div. I-III)
137657 Magnetic and electric properties of the multiferroic orthorhombic RMnO3 family 01.08.2012 Project funding (Div. I-III)
137655 Manipulating magnetism and orbitals by electric fields 01.11.2011 Project funding (Div. I-III)

Abstract

We propose the purchase of a magnetic properties measurement system (MPMS) to perform sensitive magnetic susceptibility measurements in the presence of high electric fields and at sub Kelvin temperatures. The MPMS features a 7T magnet and a sensitivity of 10-8 emu at zero magnetic field. The equipment will be adapted so that high electric fields can be applied to materials during the magnetic measurements, and will thus have a powerful new capability to study magneto-electric materials. For the measurements below 1K, which are required for some of the proposed measurements, we require a He3 insert that is designed for the MPMS.An MPMS with a high electric field option is necessary to initiate the proposed new projects at the PSI. It will play a crucial role in the study of new materials or new phenomena for which detailed magnetic susceptibility measurements prior to advanced muon, neutron and X-ray measurements are essential.The research projects cover a wide range of materials: novel multiferroics materials that can only be stabilized in single-crystalline form in thin films, artificial frustrated spin and multiferroic composite nanostructures, monolayers of single-molecule magnets with ferromagnetic surfaces, unconventional quantum phases in insulators and strongly-correlated electron systems, and magneto-electric organo-metallic quantum magnets.For all these projects, the availability of a sensitive magnetometer is essential for the characterization of the magnetic properties and for the planning of cutting-edge experiments at the large user facilities at the PSI. The availability of large electric fields, and the development of the necessary electrode materials, will open new possibilities to discover novel materials properties in a wide range of materials classes.
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