The driving goal of the M4 group is the preparation and study of Multifunctional Molecular Magnetic Materials. A broad objective, open to many possibilities, some of which are being intensively explored by different group members. An important area of research activity is focused on Molecular Nanoscience with the development of Molecular Magnetic Clusters and Nanoparticles.

These clusters may be high-spin molecules, from which architectures are generated by assembling and placing them on surfaces. They may also include nanoscopic magnetic particles obtained in polymer matrices in accordance with technologies developed, patented and licensed by group members. These particles are coated with an encapsulating polymer to give the desired multifunctionality. Although most of the activity pursues basic research objectives, the developed nanoparticles technology also has many important aspects for applied research. Thus, multifunctional magnetic particles are being designed and prepared with biomedical objectives in mind, and the patents associated with them are mainly geared to biomedical applications. The group therefore is multidisciplinary and not only includes among its members physicists, chemists, engineers and biochemists but also a hematology expert with extensive clinical experience.

Molecular Magnetic Materials currently under study include magnetic chirals, e.g., magnets possessing chiral magnetic structure in addition to chirality in their molecular and nuclear structure; organic magnets; electronically bi-stable magnets and single molecule magnets. Important physical techniques in the group are magnetic, x-ray diffraction and neutron scattering techniques. Group members played a key role in Spain's entry as an associate member of the Institute Laue Langevin (ILL) in Grenoble. They also provide coordinated scientific and administrative support to provide access to the Spanish scientific community to neutron diffractometers in CRG mode at the ILL. Members of the group are currently leading significant improvements in neutron equipment, such as the design of Xtreme a new instrument for measurements at extreme temperature, magnetic field and pressure conditions.