The tenth edition of the Latin American Workshop on Magnetism, Magnetic Materials and their Applications will be held in Buenos Aires, Argentina, from April 8th to 12th, 2013. The workshop will be closely linked with a school counterpart Exploring nanomagnetism and its applications. The LAW3M is organized in the frame of a joint effort between argentinean institutions and international organizations. LAW3M has a very important history, being the most important and comprehensive conference on magnetism in Latin America. Previous LAW3M conferences took place in La Habana (Cuba, 1991), Mérida (Venezuela, 1995), Sao Paulo (Brazil ,1998), Bariloche (Argentina, 2001), Chihuahua (Mexico, 2003), Reñaca (Chile, 2005), Rio de Janeiro (Brazil, 2007) and Manizales (Colombia, 2010). The workshop will focus on a broad range of topics including technological developments and fundamental aspects of magnetism, as well as novel magnetic materials. Presentations will consist of plenary, semi-plenary and contributed talks as well as poster sessions. A number of invited speakers will give lectures on important recent advances in the field. The attendance of young students is welcome. On behalf of the Organizing Committee we are happy to welcome you to Buenos Aires, and to LAW3M 2013.