The Magnetic Materials Research Group at the National Commission for Atomic Energy (CNEA)

Dr. Roberto Zysler is responsible for Magnetic Properties of Materials lab. The group consists of 14 senior and junior researchers, plus post- docs and PhD students. 25-30 papers are published annually, mainly in magnetic resonance.

The research done by the group is divided in 2 areas:

1) Bulk magnetic systems (Perovskites) and

2) Magnetic nanosystems (nanoparticles, wires, tubes, films and multilayers). They study basic phenomena of transport properties, Hall effects, etc. for future applications.

The research on magnetic nanoparticles focuses on magnetic order and anisotropy of surfaces. They also study secondary aspects including the magnetoresistance of Perovskites. The group is collaborating with biologists for biomedical applications and is looking for chemical partners.

Their labs facilities include:

- Sample preparation, needed to control the properties of the samples. They collaborate with other departments in Argentina, Spain, France, Italy and Germany in bilateral projects.

- Magnetic Properties: determining the complete scope of properties in well-equipped labs for studying microscopic systems and the specialization of magnetic resonance.

They look for partners with equipment they lack themselves, e.g. for access to synchrotrons in Argentina, Brazil (Campinas), Sweden and Trieste, Italy.

The group has a lot of experience in Electromagnetic resonance spectroscopy, determining coexistence of paramagnetic and ferromagnetic phases in nanoparticulate materials. In collaboration with an Italian group in Rome, the basic properties including surface effects and internal organisation of NiO particles are studied, which may be applied in magnetic read/write heads. There is collaboration with France on spintronics, and with the USA on MnO and Perovskite oxides.

More information:

Dr. Roberto Zysler

National Commission for Atomic Energy (CNEA)

Lab on Magnetic Properties of Materials

www.cabrem4.cnea.gov.ar