A Platform to Develop and Utilise Characterisation Tools for Functional Magnetic Materials
Lead Research Organisation:
Imperial College London
Department Name: Physics
Abstract
Magnetic materials have played an increasingly important role in our society. The Functional Magnetic Materials Group at Imperial College have developed a suite of novel characterisation tools over recent years. This proposal describes how with proper support we could utilise these tools to best effect in the study of materials important for application and develop key new tools as appropriate. The materials we aim to study during the course of the Platform grant fall into four main areas a) ultrathin film narrow gap semiconductors for magnetic sensor technology; b)superconducting materials for low field portable MRI technology; c) materials that allow the harnessing of electron spin d) materials for 300K magnetic refrigeration. The first areas are very much a part of what the group are currently doing however we want to incorporate the new elements such as strain measurements in our Hall probe and point contact facilities and nanoscale sensor fabrication. Our forward look for the group is in the areas of Spintronics and Magnetocalorics. In Spintronics we plan to develop new tools to harness and exploit spin in electrical materials mainly narrow gap semiconductors. Here again there will be an emphasis on nanofabrication of devices. Magnetocalorics is a very new area for the group and a very exciting one. Our characterisation capability is ideally suited to making a really important novel contribution here, particularly with access to higher resolution sensors that will come out of other parts of the program. Overall the group is well connected to a network of international collaborators and many of these have written letters of support for this proposal. It would be our aim to use the Platform in part to strengthen these links as well as seed new collaborations and explore new avenues for funding in Europe and with industrial collaborators.
People |
ORCID iD |
Lesley Cohen (Principal Investigator) |
Publications
Turcaud J
(2015)
Influence of manganite powder grain size and Ag-particle coating on the magnetocaloric effect and the active magnetic regenerator performance
in Acta Materialia
Lovell E
(2014)
Dynamics of the First-Order Metamagnetic Transition in Magnetocaloric La(Fe,Si) 13 : Reducing Hysteresis
in Advanced Energy Materials
Lyubina J
(2012)
Novel La(Fe,Si) 13 /Cu Composites for Magnetic Cooling
in Advanced Energy Materials
Adamopoulos G
(2010)
Spray-Deposited Li-Doped ZnO Transistors with Electron Mobility Exceeding 50 cm 2 /Vs
in Advanced Materials
Lyubina J
(2012)
Electrolytic hydriding of LaFe(13-x)Si(x) alloys for energy efficient magnetic cooling.
in Advanced materials (Deerfield Beach, Fla.)
Waske A
(2016)
The impact of surface morphology on the magnetovolume transition in magnetocaloric LaFe 11.8 Si 1.2
in APL Materials
Yates K
(2007)
The spin polarization of CrO2 revisited
in Applied Physics Letters
Bratko M
(2012)
History dependence of directly observed magnetocaloric effects in (Mn, Fe)As
in Applied Physics Letters
Gilbertson A
(2015)
Multifunctional semiconductor micro-Hall devices for magnetic, electric, and photo-detection
in Applied Physics Letters
Li J
(2012)
Observation of spin dependent photocoductivity in InSb quantum well nanowires
in Applied Physics Letters
Description | This grant was a platform grant designed to enable the group to develop bespoke characterisation tools for magnetic materials. We developed an ac calorimeter that was transferred to a UK based company, and Hall probe scanner that is still under discussion regarding transfer to a company for commercial use. Apart from these measurable impacts the tools developed within the grant enabled us to provide insight into the development of new materials for magnetocalorics, for energy efficient magnetic solid state cooling (or heating) applications. |
Exploitation Route | We have worked with a number of companies in the area of magnetocalorics to help them to characterise their materials and develop new materials. |
Sectors | Electronics,Energy |
URL | https://www.imperial.ac.uk/people/l.cohen/research.html |
Description | This platform grant facilitated our research into a number of new areas related to electronic materials, sensors and magnetic solid state cooling. |
First Year Of Impact | 2009 |
Sector | Energy |
Description | EPSRC |
Amount | £445,842 (GBP) |
Funding ID | EP/H040048/1 |
Organisation | Engineering and Physical Sciences Research Council (EPSRC) |
Sector | Public |
Country | United Kingdom |
Start | 04/2010 |
End | 03/2013 |
Description | EPSRC |
Amount | £3,863,046 (GBP) |
Funding ID | EP/G060940/1 |
Organisation | Engineering and Physical Sciences Research Council (EPSRC) |
Sector | Public |
Country | United Kingdom |
Start | 10/2009 |
End | 03/2015 |
Description | EPSRC |
Amount | £611,749 (GBP) |
Funding ID | EP/J014699/1 |
Organisation | Engineering and Physical Sciences Research Council (EPSRC) |
Sector | Public |
Country | United Kingdom |
Start | 11/2012 |
End | 10/2015 |
Description | EPSRC |
Amount | £98,621 (GBP) |
Funding ID | EP/F016271/1 |
Organisation | Engineering and Physical Sciences Research Council (EPSRC) |
Sector | Public |
Country | United Kingdom |
Start | 08/2008 |
End | 09/2011 |
Description | EPSRC |
Amount | £401,242 (GBP) |
Funding ID | EP/F065922/1 |
Organisation | Engineering and Physical Sciences Research Council (EPSRC) |
Sector | Public |
Country | United Kingdom |
Start | 09/2008 |
End | 08/2011 |