Organisation profile

The University of Birmingham (UoB) is currently ranked in the top 100 universities worldwide. The Magnetic Materials Group (MMG), previously known as the AACG (Applied Alloy Chemistry Group), has a 35-year track record on processing and developing rare earth based magnetic materials, and more recently in recycling of rare earth magnets. To date, the group has published over 300 papers on rare earth based magnetic materials. The group has trained over 50 people in the processing of rare earth magnets. The MMG has recently announced the development of a new hydrogen based technique for the recovery and recycling of NdFeB magnets from scrap electronic devices.


The core activities of UNIVERSITY OF BIRMINGHAM are

The main research areas within the MMG are:

  • Hydrogen processing of materials.
  • Recycling of rare earth magnets.
  • Nanostructured magnetic materials.
  • Non-equilibrium processing of rare earth alloy systems.

The group has extensive lab facilities for processing and characterisation of magnetic materials

Role and contribution to REProMag

The key tasks for UoB are to provide recycled feedstocks of NdFeB powders from hydrogen processed electronics. This includes detailed characterisation of the powders to define the sintering conditions required for the parts manufactured by metal injection moulding; for example, thermogravimetric analysis and dilatometry. UoB will also characterise key magnetic and physical properties of the final sintered magnets. In addition, UoB is involved with developing a novel Zn coating technique for the MIM parts using a technique known as Low Pressure Pack Sublimation (LPPS). This comprises tailoring the processing conditions to the MIM parts and performing detailed characterisation of the parts using techniques such as electron microscopy.


Dr. Allan Walton
Reader in Processing of Magnetic Materials
Chairman of UK Magnetics Society
Head of Magnetic Materials Groupin the School of Metallurgy and Materials
Tel: +44 (0) 121 414 5195