title: In the dawn of magnets made from molecules.
abstract: I discuss here the contribution from J. S. Miller and co-workers concerning the discovery of ferromagnetism in an organometallic compound. The important peculiarities around this discovery, that the moments from p-electrons participate in magnetic ordering, strongly contributed to open the area of molecule-based magnetic materials as a new area of research.
authors.affiliation: Departamento de Física de la Materia Condensada, Facultad de Ciencias and Instituto de Ciencia de Materiales de Aragón, CSIC - Universidad de Zaragoza, 50009 Zaragoza, Spain. palacio@unizar.es.
authors.forename: Fernando
authors.initials: F
authors.lastname: Palacio